TASK 71-00-00-810-002 The Corrective Procedures For The Clear Language Messages (ARINC356), Fault Isolation-002

DMC:V2500-A0-71-00-0000-02A-421A-B|Issue No:001.00|Issue Date:2013-11-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

All

Common Information

TASK 71-00-00-810-002 The Corrective Procedures For The Clear Language Messages (ARINC356), Fault Isolation-002

General

This TASK gives the corrective procedures for the clear language messages (ARINC 356) given in TASK 71-00-00-810-001.

The harness checks in this TASK are given as a plug to plug and contact (con) to contact check. Refer to TASK 71-00-00-990-502 for schematic harness diagrams. These diagrams will help to locate the harnesses and plugs required.

For example, 4000KS-J2 con L to 4008VC-A con 38, the plug 4000KS-J2 is found on the EEC and the plug 4008VC-A is found on the bifurcation panel.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 71-00-00-750-051 The Procedure to Correct the Message INSTINC DIS CIRCUIT/EEC

    1. This procedure must be done for channel A or B for the ARINC lable/bit 275/26.

    2. Replace the instinctive disconnect circuit. If the fault continues do step B.

      3. Disconnect the instinctive disconnect circuit harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. For channel A.

        4000KS-J1 con F to 406VC-A con 21.

        4000KS-J1 con a to 406VC-A con 22.

        4000KS-J1 con E to 406VC-A con 23.

      2. For channel B.

        4000KS-J7 con F to 406VC-A con 21.

        4000KS-J7 con a to 406VC-A con 22.

        4000KS-J7 con E to 406VC-A con 23.

        If a fault is found, repair as necessary. If no fault is found do step C.

    4. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    2. SUBTASK 71-00-00-750-052 The Procedure to Correct the Message EIU/HC/EEC

    1. This procedure must be done for the ARINC lable/bit 276/21, 156/14.

    2. Replace the engine interface unit test stand simulator. If the fault continues do step B.

      3. Disconnect the engine interface unit harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. For channel A and B.

        4000KS-J1 con P to 402VC-A con 4.

        4000KS-J1 con N to 402VC-A con 12.

        4000KS-J7 con P to 402VC-A con 4.

        4000KS-J7 con N to 402VC-A con 12.

        If a fault is found, repair as necessary. If no fault is found do step C.

    4. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    3. SUBTASK 71-00-00-750-053 The Procedure to Correct the Message DATA ENTRY PLUG/EEC

    1. The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the procedure.

      145/24 do step A. for channel A and B.

      155/17 do steps B. and C. for channel A and B.

      155/18 do steps B. and C. for channel A and B.

    2. Connect the data entry plug (4000KS-J6) to the EEC.

    3. Check that the data entry plug connections are correct. Refer to TASK 71-00-00-700-010. Check the cable, plugs and receptacles for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

    4. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    4. SUBTASK 71-00-00-750-056 The Procedure to Correct the Message N1 SENS/HC/EEC

    1. The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the procedure.

      350/14 do step A. for channel A or B.

      353/14 do step B. for channel A and B.

      2. Disconnect the leads from the local fan speed probe terminal block and connect them to the spare N1 fan speed probe terminal block.

      1. Channel A - Disconnect 4000VS-2, 1 and connect to 4000VS-4, 3.

      2. Channel B - Disconnect 4000VS-5, 6 and connect to 4000VS-4, 3.

        If the fault continues do step B.

      3. Check the fan speed probe electrical cables, plugs and receptacles for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel A.

        4000KS-J2 con L to 4008VC-A con 38.

        4000KS-J2 con d to 4008VC-A con 37.

        If a fault is found repair as necessary. If no fault is found continue with the check.

        4008VC con 38 to 4000VS-1.

        4008VC con 37 to 4000VS-2.

      2. Channel B.

        4000KS-J8 con L to 4009VC-A con 17.

        4000KS-J8 con d to 4009VC-A con 34.

        If a fault is found repair as necessary. If no fault is found continue with the check.

        4009VC con 17 to 4000VS-5.

        4009VC con 34 to 4000VS-6.

    4. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    5. SUBTASK 71-00-00-750-057-A00 V2500-A1: The Procedure to Correct the Message ENG DED ALTERN/HC/EEC

    1. Replace the engine dedicated alternator (4005EV). Refer to TASK 72-00-60-050-001 for the removal and TASK 72-00-60-450-001 for the installation. If the fault continues do step B.

      2. Check the engine dedicated alternator electrical cables plugs and receptacles. Check for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        353/15 do step B.(1) for channel A and B.

        352/18 do step B.(2) for channel A or B.

      1. Channel A.

        4000KS-J5 con W to 4005EV-A con A.

        4000KS-J5 con V to 4000KS-J5 con U.

        Channel B.

        4000KS-J11 con W to 4005EV-B con A.

        4000KS-J11 con V to 4000KS-J11 con U.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4000KS-J5 con j to 4005EV-A con B.

        4000KS-J5 con A to 4005EV-A con E.

        4000KS-J5 con X to 4005EV-A con J.

        4000KS-J5 con B to 4005EV-A con F.

        4000KS-J5 con Y to 4005EV-A con G.

        Channel B.

        4000KS-J11 con j to 4005EV-B con B.

        4000KS-J11 con A to 4005EV-B con E.

        4000KS-J11 con X to 4005EV-B con J.

        4000KS-J11 con B to 4005EV-B con F.

        4000KS-J11 con Y to 4005EV-B con G.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    6. SUBTASK 71-00-00-750-057-B00 V2500-A5: The Procedure to Correct the Message ENG DED ALTERN/HC/EEC

    1. Replace the engine dedicated alternator (4005EV). Refer to TASK 72-00-60-050-001 for the removal and TASK 72-00-60-450-001 for the installation. If the fault continues do step B.

      2. Check the engine dedicated alternator electrical cables plugs and receptacles. Check for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        350/15 do step B.(1) for channel A and B.

        353/15 do step B.(1) for channel A or B.

        352/18 do step B.(2) for channel A or B.

      1. Channel A.

        4000KS-J2 con M to 4005EV-A con D.

        4000KS-J2 con C to 4005EV-A con C.

        Channel B.

        4000KS-J11 con W to 4005EV-B con A.

        4000KS-J11 con V to 4000KS-J11 con U.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4000KS-J5 con j to 4005EV-A con B.

        4000KS-J5 con A to 4005EV-A con E.

        4000KS-J5 con X to 4005EV-A con J.

        4000KS-J5 con B to 4005EV-A con F.

        4000KS-J5 con Y to 4005EV-A con G.

        Channel B.

        4000KS-J11 con j to 4005EV-B con B.

        4000KS-J11 con A to 4005EV-B con E.

        4000KS-J11 con X to 4005EV-B con J.

        4000KS-J11 con B to 4005EV-B con F.

        4000KS-J11 con Y to 4005EV-B con G.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    7. SUBTASK 71-00-00-750-058 The Procedure to Correct the Message P2T2 SENS/HC/EEC

    1. Replace the P2T2 probe (4014KS). Refer to TASK 71-11-00-050-001 for the removal and TASK 71-00-00-450-001 for the installation.

      2. Disconnect the P2T2 probe harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        350/16 do step B.(1), (2) and (3) for channel A or B.

        352/27 do step B.(8) for channel A or B.

        353/18 do step B.(1), (2) and (3) for channel A and B.

      1. Channel A.

        4000KS-J4 con G to 4000VC con 10.

        4000KS-J4 con b to 4000VC con 23.

        4000KS-J4 con c to 4000VC con 24.

        Channel B.

        4000KS-J10 con G to 4001VC con 10.

        4000KS-J10 con b to 4001VC con 23.

        4000KS-J10 con c to 4001VC con 24.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4000VC-A con 10 to 4012VC-A con 1.

        4000VC-A con 23 to 4012VC-A con 2.

        4000VC-A con 24 to 4012VC-A con 3.

        Channel B.

        4001VC-A con 10 to 4013VC-A con 3.

        4001VC-A con 23 to 4013VC-A con 2.

        4001VC-A con 24 to 4013VC-A con 1.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      3. Channel A.

        4012VC con 1 to 4014KS-B con 1.

        4012VC con 2 to 4014KS-B con 2.

        4012VC con 3 to 4014KS-B con 3.

        Channel B.

        4013VC con 3 to 4014KS-A con 9.

        4013VC con 2 to 4014KS-A con 8.

        4013VC con 1 to 4014KS-A con 7.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      4. Check the P2 pneumatic line.

      5. Check if ADC fault is set, if it is replace the simulator.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    8. SUBTASK 71-00-00-750-059 The Procedure to Correct the Message EGT SENS/HC/EEC

    1. The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the procedure.

      350/17 do steps B. and C. for channel A or B.

      353/26 do steps A. and C. for channel A and B.

    2. Replace the EGT thermocouples (4012KS-1, 2, 3 and 4). Refer to TASK 72-00-50-050-001 for the removal and TASK 72-00-50-450-001 for the installation. If the fault continues do step B.

    3. Replace the EGT harness and junction box (4012KS-5). Refer to TASK 72-00-50-050-002 for the removal and TASK 72-00-50-450-002 for the installation. If the fault continues do step C.

      4. Disconnect the EGT system harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel A.

        4000KS-J4 con Y to 4008VC-A con 27.

        4000KS-J4 con B to 4008VC-A con 28.

        Channel B.

        4000KS-J10 con Y to 4009VC-A con 42.

        4000KS-J10 con B to 4009VC-A con 25.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4008VC con 27 to 4007VC-A con 2.

        4008VC con 28 to 4007VC-A con 3.

        Channel B.

        4009VC con 42 to 4007VC-A con 6.

        4009VC con 25 to 4007VC-A con 5.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      3. Channel A.

        4007VC con 2 to 4012KS-5 CH.

        4007VC con 3 to 4012KS-5 AL.

        Channel B.

        4007VC con 6 to 4012KS-5 CH.

        4007VC con 5 to 4012KS-5 AL.

        If a fault is found repair as necessary. If no fault is found do step D.

    5. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    9. SUBTASK 71-00-00-750-060 The Procedure to Correct the Message FUEL TEMP SENS/HC/EEC

    1. Replace the fuel temperature thermocouple (4017KS). Refer to TASK 72-00-32-050-003 for the removal and TASK 72-00-32-450-003 for the installation.

      2. Disconnect the fuel temperature sensor harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done as shown below for the applicable ARINC lable/bit.

        350/18 do this check for channel A or B.

        353/20 do this check for channel A and B.

      1. Channel A.

        4000KS-J4 con C to 4017KS-A con 2.

        4000KS-J4 con D to 4017KS-A con 3.

        Channel B.

        4000KS-J10 con C to 4017KS-A con 5.

        4000KS-J10 con D to 4017KS-A con 6.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    10. SUBTASK 71-00-00-750-061 The Procedure to Correct the Message ACOC OIL TEMP TC/HC/EEC

    1. Replace the air cooled oil cooler thermocouple (4016KS). Refer to TASK 72-00-32-050-004 for the removal and TASK 72-00-32-450-004 for the installation. If the fault continues do step B.

      2. Disconnect the ACOC thermocouple harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done as shown below for the applicable ARINC lable/bit.

        350/19 do this check for channel A or B.

        353/21 do this check for channel A and B.

      1. Channel A.

        4000KS-J4 con Z to 4016KS-A con 2.

        4000KS-J4 con E to 4016KS-A con 3.

        Channel B.

        4000KS-J10 con Z to 4016KS-A con 5.

        4000KS-J10 con E to 4016KS-A con 6.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    11. SUBTASK 71-00-00-750-062 The Procedure to Correct the Message FMU/HC/EEC

    1. Replace the fuel metering unit (4000KC). Refer to TASK 72-00-60-050-002 for the removal and TASK 72-00-60-450-002 for the installation. If the fault continues do step B.

      2. Disconnect the FMU harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        350/27 do step B.(1) for channel A or B.

        351/16 do step B.(2) for channel A or B.

        351/23 do steps B.(1) and (2) for channel A or B.

        351/28 do steps B.(3) and (4) for channel A or B.

        351/29 do steps B.(3) and (4) for channel A or B.

        353/22 do steps B.(1) and (2) for channel A and B.

        354/23 do step B.(5) and (6) for channel A or B.

        354/24 do steps B.(5) for channel A or B.

        354/27 do steps B.(4) for channel A or B.

        155/29 do steps B.(5) and (6) for channel A or B.

        156/18 do steps B.(3) and (4) for channel A or B.

        156/21 do step B.(3) and (4) for channel A and B.

        156/23 do steps B.(5) and (6) for channel A and B.

      1. Channel A.

        4000KS-J2 con V to 4000KC-B con E.

        4000KS-J2 con i to 4000KC-B con C.

        4000KS-J2 con j to 4000KC-B con D.

        4000KS-J2 con W to 4000KC-B con B.

        4000KS-J2 con A to 4000KC-B con A.

        Channel B.

        4000KS-J8 con V to 4000KC-C con E.

        4000KS-J8 con i to 4000KC-C con C.

        4000KS-J8 con j to 4000KC-C con D.

        4000KS-J8 con W to 4000KC-C con B.

        4000KS-J8 con A to 4000KC-C con A.

        If a fault is found repair as necessary.

      2. Channel A.

        4000KS-J3 con K to 4000KC-B con G.

        4000KS-J3 con J to 4000KC-B con F.

        Channel B.

        4000KS-J9 con K to 4000KC-C con G.

        4000KS-J9 con J to 4000KC-C con F.

        If a fault is found repair as necessary.

      3. Channel A.

        4000KS-J2 con B to 4000KC-B con N.

        4000KS-J2 con C to 4000KC-B con M.

        Channel B.

        4000KS-J8 con B to 4000KC-C con N.

        4000KS-J8 con C to 4000KC-C con M.

        If a fault is found repair as necessary.

      4. Channel A.

        4000KS-J3 con W to 4000KC-B con P.

        4000KS-J3 con V to 4000KC-B con S.

        Channel B.

        4000KS-J9 con W to 4000KC-C con P.

        4000KS-J9 con V to 4000KC-C con S.

        If a fault is found repair as necessary.

      5. Channel A.

        4000KS-J5 con J to 4000KC-B con J.

        4000KS-J5 con d to 4000KC-B con H.

        Channel B.

        4000KS-J11 con J to 4000KC-C con J.

        4000KS-J11 con d to 4000KC-C con H.

        If a fault is found repair as necessary.

      6. Channel A.

        4000KS-J2 con Y to 4000KC-B con L.

        4000KS-J2 con Z to 4000KC-B con K.

        Channel B.

        4000KS-J8 con Y to 4000KC-C con L.

        4000KS-J8 con Z to 4000KC-C con K.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    12. SUBTASK 71-00-00-750-063 The Procedure to Correct the Message VSV ACT/HC/EEC

    1. Replace the variable stator vane actuator (4022KS). Refer to TASK 72-00-40-050-001 for the removal and TASK 72-00-40-450-001 for the installation. If the fault continues do step B.

      2. Disconnect the VSV actuator harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        350/21 do steps B.(1) and (2) for channel A or B.

        351/17 do steps B.(3) and (4) for channel A or B.

        351/24 do steps B.(1) to (4) for channel A or B.

        353/23 do steps B.(1) to (4) for channel A and B.

      1. Channel A.

        4000KS-J2 con h to 4008VC-A con 10.

        4000KS-J2 con s to 4008VC-A con 2.

        4000KS-J2 con U to 4008VC-A con 24.

        4000KS-J2 con T to 4008VC-A con 11.

        Channel B.

        4000KS-J8 con h to 4009VC-A con 4.

        4000KS-J8 con s to 4009VC-A con 1.

        4000KS-J8 con U to 4009VC-A con 13.

        4000KS-J8 con T to 4009VC-A con 12.

        If a fault is found repair as necessary.

      2. Channel A.

        4008VC con 10 to 4022KS-A con A.

        4008VC con 2 to 4022KS-A con B.

        4008VC con 24 to 4022KS-A con D.

        4008VC con 11 to 4022KS-A con E.

        Channel B.

        4009VC con 4 to 4022KS-D con A.

        4009VC con 1 to 4022KS-D con B.

        4009VC con 13 to 4022KS-D con D.

        4009VC con 12 to 4022KS-D con E.

        If a fault is found repair as necessary.

      3. Channel A.

        4000KS-J3 con H to 4008VC-A con 33.

        4000KS-J3 con G to 4008VC-A con 34.

        Channel B.

        4000KS-J9 con H to 4009VC-A con 37.

        4000KS-J9 con G to 4009VC-A con 36.

        If a fault is found repair as necessary.

      4. Channel A.

        4008VC con 33 to 4022KS-C con A.

        4008VC con 34 to 4022KS-C con C.

        Channel B.

        4009VC con 37 to 4022KS-B con A.

        4009VC con 36 to 4022KS-B con C.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    13. SUBTASK 71-00-00-750-064 The Procedure to Correct the Message 2.5 BLD ACT/HC/EEC

    1. Replace the LPC master bleed actuator (4021KS). Refer to TASK 72-00-32-050-005 for the removal and TASK 72-00-32-450-005 for the installation. If the fault continues do step B.

      2. Disconnect the master actuator harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        350/22 do steps B.(1) and (2) for channel A or B.

        351/18 do steps B.(3) and (4) for channel A or B.

        351/25 do steps B.(1) to (4) for channel A or B.

        353/28 do steps B.(1) to (4) for channel A and B.

      1. Channel A.

        4000KS-J4 con q to 4008VC-A con 15.

        4000KS-J4 con r to 4008VC-A con 31.

        4000KS-J4 con M to 4008VC-A con 30.

        4000KS-J4 con e to 4008VC-A con 14.

        Channel B.

        4000KS-J10 con q to 4009VC-A con 22.

        4000KS-J10 con r to 4009VC-A con 39.

        4000KS-J10 con M to 4009VC-A con 40.

        4000KS-J10 con e to 4009VC-A con 23.

        If a fault is found repair as necessary.

      2. Channel A.

        4008VC con 15 to 4021KS-A con A.

        4008VC con 31 to 4021KS-A con B.

        4008VC con 30 to 4021KS-A con C.

        4008VC con 14 to 4021KS-A con D.

        Channel B.

        4009VC con 22 to 4021KS-A con F.

        4009VC con 39 to 4021KS-A con G.

        4009VC con 40 to 4021KS-A con K.

        4009VC con 23 to 4021KS-A con E.

        If a fault is found repair as necessary.

      3. Channel A.

        4000KS-J3 con F to 4008VC-A con 16.

        4000KS-J3 con b to 4008VC-A con 32.

        Channel B.

        4000KS-J9 con F to 4009VC-A con 21.

        4000KS-J9 con b to 4009VC-A con 38.

        If a fault is found repair as necessary.

      4. Channel A.

        4008VC con 16 to 4021KS-B con A.

        4008VC con 32 to 4021KS-B con B.

        Channel B.

        4009VC con 21 to 4021KS-B con D.

        4009VC con 38 to 4021KS-B con E.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    14. SUBTASK 71-00-00-750-065 The Procedure to correct the Message ACC ACT/HC/EEC

    1. Replace the active clearance control (ACC) actuator (4027KS). Refer to TASK 72-00-40-050-002 for the removal and TASK 72-00-40-450-002 for the installation. If the fault continues do step B.

      2. Disconnect the ACC actuator harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        350/23 do steps B.(1) and (2) for channel A or B.

        351/19 do steps B.(3) and (4) for channel A or B.

        351/26 do steps B.(1) to (4) for channel A or B.

        353/25 do steps B.(1) to (4) for channel A and B.

      1. Channel A.

        4000KS-J2 con P to 4008VC-A con 23.

        4000KS-J2 con f to 4008VC-A con 9.

        4000KS-J2 con R to 4008VC-A con 42.

        4000KS-J2 con g to 4008VC-A con 41.

        Channel B.

        4000KS-J8 con P to 4009VC-A con 14.

        4000KS-J8 con f to 4009VC-A con 5.

        4000KS-J8 con R to 4009VC-A con 28.

        4000KS-J8 con g to 4009VC-A con 29.

        If a fault is found repair as necessary.

      2. Channel A.

        4008VC con 23 to 4027KS-A con 10.

        4008VC con 9 to 4027KS-A con 3.

        4008VC con 42 to 4027KS-A con 8.

        4008VC con 41 to 4027KS-A con 9.

        Channel B.

        4009VC con 14 to 4027KS-A con 11.

        4009VC con 5 to 4027KS-A con 12.

        4009VC con 28 to 4027KS-A con 19.

        4009VC con 29 to 4027KS-A con 18.

        If a fault is found repair as necessary.

      3. Channel A.

        4000KS-J3 con p to 4008VC-A con 17.

        4000KS-J3 con n to 4008VC-A con 18.

        Channel B.

        4000KS-J9 con p to 4009VC-A con 20.

        4000KS-J9 con n to 4009VC-A con 19.

        If a fault is found repair as necessary.

      4. Channel A.

        4008VC con 17 to 4027KS-A con 5.

        4008VC con 18 to 4027KS-A con 14.

        Channel B.

        4009VC con 20 to 4027KS-A con 16.

        4009VC con 19 to 4027KS-A con 15.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    15. SUBTASK 71-00-00-750-066 The Procedure to Correct the Message P3T3 SENS/HC/EEC

    1. Replace the P3T3 sensor (4024KS). Refer to TASK 72-00-40-050-003 for the removal and TASK 72-00-40-450-003 for the installation. If the fault continues do step B.

      2. Disconnect the P3T3 sensor harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done as shown below for the applicable ARINC lable/bit.

        350/24 do this check for channel A or B.

        353/24 do this check for channel A and B.

      1. Channel A.

        4000KS-J4 con A to 4008VC-A con 25.

        4000KS-J4 con X to 4008VC-A con 26.

        Channel B.

        4000KS-J10 con A to 4009VC-A con 26.

        4000KS-J10 con X to 4009VC-A con 27.

        If a fault is found repair as necessary.

      2. Channel A.

        4008VC con 25 to 4006VC-A con 9.

        4008VC con 26 to 4006VC-A con 8.

        Channel B.

        4009VC con 26 to 4006VC-A con 7.

        4009VC con 27 to 4006VC-A con 6.

        If a fault is found repair as necessary.

      3. Channel A.

        4006VC con 9 to 4024KS-A Chromel.

        4006VC con 8 to 4024KS-A Alumel.

        Channel B.

        4006VC con 7 to 4024KS-B Chromel.

        4006VC con 6 to 4024KS-B Alumel.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    16. SUBTASK 71-00-00-750-067 The Procedure to Correct the Message REV LVDT CHA/HC/EEC

    1. Replace the thrust reverser position feedback sensor simulator. If the fault continues do step B.

      2. Disconnect the reverser position feedback harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

      1. 4000KS-J4 con N to 4000VC con 9.

        4000KS-J4 con f to 4000VC con 22.

        4000KS-J4 con g to 4000VC con 5.

        4000KS-J4 con h to 4000VC con 15.

        If a fault is found repair as necessary.

      2. 4000VC-A con 9 to 4004VC-A con 6.

        4000VC-A con 22 to 4004VC-A con 7.

        4000VC-A con 5 to 4004VC-A con 5.

        4000VC-A con 15 to 4004VC-A con 4.

        If a fault is found repair as necessary.

      3. 4004VC con 6 to 4004KS-A con 3.

        4004VC con 7 to 4004KS-A con 4.

        4004VC con 5 to 4004KS-A con 2.

        4004VC con 4 to 4004KS-A con 1.

        If a fault is found repair as necessary.

    3. Remove the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    17. SUBTASK 71-00-00-750-068 The Procedure to Correct the Message REV LVDT CHB/HC/EEC

    1. Replace the thrust reverser position feedback sensor simulator. If the fault continues do step B.

      2. Disconnect the reverser position feedback harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

      1. 4000KS-J10 con N to 4001VC con 9.

        4000KS-J10 con f to 4001VC con 22.

        4000KS-J10 con g to 4001VC con 5.

        4000KS-J10 con h to 4001VC con 15.

        If a fault is found repair as necessary.

      2. 4001VC-A con 9 to 4005VC-A con 6.

        4001VC-A con 22 to 4005VC-A con 7.

        4001VC-A con 5 to 4005VC-A con 5.

        4001VC-A con 15 to 4005VC-A con 4.

        If a fault is found repair as necessary.

      3. 4005VC con 6 to 4003KS-A con 3.

        4005VC con 7 to 4003KS-A con 4.

        4005VC con 5 to 4003KS-A con 2.

        4005VC con 4 to 4003KS-A con 1.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    18. SUBTASK 71-00-00-750-069 The Procedure to Correct the Message FUEL FLOWMETER/HC/EEC

    1. Replace the fuel flow transmitter (4010KS). Refer to TASK 72-00-32-050-006 for the removal and TASK 72-00-32-450-006 for the installation.

      2. Disconnect the fuel flow transmitter harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A only for the ARINC lable/bit 350/27.

      1. Channel A.

        4000KS-J2 con G to 4010KS-A con 2.

        4000KS-J2 con H to 4010KS-A con 1.

        4000KS-J2 con b to 4010KS-A con 3.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    19. SUBTASK 71-00-00-750-070 The Procedure to Correct the Message TLA SENS/HC/EEC

    1. Replace the throttle resolver angle lever for channel A or B. Refer to TASK 72-00-60-050-002 for the removal and TASK 72-00-60-450-002 for the installation.

      2. Disconnect the throttle resolver angle harness and check the electrical cables, plugs, and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done as shown below for the applicable ARINC lable/bit.

        350/28 do this check for channel A or B.

        353/29 do this check for channel A and B.

      1. Channel A.

        4000KS-J1 con U to 406VC-A con 13.

        4000KS-J1 con i to 406VC-A con 14.

        4000KS-J1 con T to 406VC-A con 15.

        4000KS-J1 con j to 406VC-A con 5.

        4000KS-J1 con S to 406VC-A con 3.

        4000KS-J1 con h to 406VC-A con 12.

        Channel B.

        4000KS-J7 con U to 407VC-A con 13.

        4000KS-J7 con i to 407VC-A con 14.

        4000KS-J7 con T to 407VC-A con 15.

        4000KS-J7 con j to 407VC-A con 5.

        4000KS-J7 con S to 407VC-A con 3.

        4000KS-J7 con h to 407VC-A con 12.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    20. SUBTASK 71-00-00-750-071 The Procedure to Correct the Message ADIRS 1/HC/EEC

    1. Check the left air data computer (ADC) simulator.

      2. Disconnect the left ADC harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. 4000KS-J1 con g to 402VC-A con 28.

        4000KS-J1 con f to 402VC-A con 14.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      2. 4000KS-J7 con g to 402VC-A con 28.

        4000KS-J7 con f to 402VC-A con 14.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    21. SUBTASK 71-00-00-750-072 The Procedure to Correct the Message ADIRS 2/HC/EEC

    1. Check the right air data computer (ADC) simulator.

      2. Disconnect the right ADC harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. 4000KS-J7 con R to 403VC-A con 28.

        4000KS-J7 con n to 403VC-A con 14.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      2. 4000KS-J1 con R to 403VC-A con 28.

        4000KS-J1 con n to 403VC-A con 14.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    22. SUBTASK 71-00-00-750-073 The Procedure to Correct the Message HYD CONT UNIT/HC/EEC

    1. Replace the reverser control unit simulator. If the fault continues do step B.

      2. Disconnect the reverser control unit simulator harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for the given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        351/20 do steps B.(1) and (2) for channel A or B.

        352/14 do steps B.(3) and (8) for channel A or B.

        354/28 do steps B.(4) to (8) for channel A or B.

        156/28 do step B.(3) for channel A and B.

      1. Channel A.

        4000KS-J3 con D to 4000VC con 13.

        4000KS-J3 con C to 4000VC con 29.

        Channel B.

        4000KS-J9 con D to 4001VC con 13.

        4000KS-J9 con C to 4001VC con 29.

        If a fault is found repair as necessary.

      2. Channel A.

        4000VC-A con 13 to 4101KS-na con 2.

        4000VC-A con 29 to 4101KS-na con 3.

        Channel B.

        4001VC-A con 13 to 4101KS-nB con 2.

        4001VC-A con 29 to 4101KS-nB con 3.

        If a fault is found repair as necessary.

      3. Channel A.

        4000KS-J1 con C to 4101KS-na con 7.

        4000KS-J1 con k to 4101KS-na con 6.

        Channel B.

        4000KS-J7 con C to 4101KS-nB con 7.

        4000KS-J7 con k to 4101KS-nB con 6.

        If a fault is found repair as necessary.

      4. Channel A.

        4000KS-J1 con s to 4004VC-A con 2.

        4000KS-J1 con k to 4004VC-A con 3.

        Channel B.

        4000KS-J7 con s to 4005VC-A con 2.

        4000KS-J7 con k to 4005VC-A con 3.

        If a fault is found repair as necessary.

      5. Channel A.

        4004VC con 2 to 4007KS-A con C.

        4004VC con 3 to 4007KS-A con B.

        Channel B.

        4005VC con 2 to 4006KS-A con C.

        4005VC con 3 to 4006KS-A con B.

        If a fault is found repair as necessary.

      6. Channel A.

        4000KS-J3 con A to 4000VC con 12.

        4000KS-J3 con B to 4000VC con 28.

        Channel B.

        4000KS-J9 con A to 4001VC con 12.

        4000KS-J9 con B to 4001VC con 28.

        If a fault is found repair as necessary.

      7. Channel A.

        4000VC-A con 12 to 402VC-A con 9.

        4000VC-A con 28 to 4101KS-na con 5.

        Channel B.

        4001VC-A con 12 to 403VC-A con 9.

        4001VC-A con 28 to 4101KS-nB con 5.

        If a fault is found repair as necessary.

      8. Channel A.

        4101KS-na con 4 to 402VC-A con 8.

        Channel B.

        4101KS-nB con 4 to 403VC-A con 8.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    23. SUBTASK 71-00-00-750-074 The Procedure to Correct the Message ACOC AIR MOD VLV/HC/EEC

    1. Replace the air cooled oil cooler air modulating valve (4019KS). Refer to TASK 72-00-32-050-007 for the removal and TASK 72-00-32-450-007 for the installation. If the fault continues do step B.

      2. Disconnect the ACOC thermocouple harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        352/24 do step A. for channel A or B.

        351/21 do step B.(1) for channel A or B.

        157/15 do step B.(2) for channel A or B.

        146/20, 146/21, 157/18 do steps B.(1) and (2) for channel A or B.

        157/21 do steps B.(1) and (2) for channel A and B.

      1. Channel A.

        4000KS-J3 con c to 4019KS-A con 3.

        4000KS-J3 con d to 4019KS-A con 2.

        Channel B.

        4000KS-J9 con c to 4019KS-B con 3.

        4000KS-J9 con d to 4019KS-B con 2.

        If a fault is found repair as necessary.

      2. Channel A.

        4000KS-J4 con d to 4019KS-A con 6.

        4000KS-J4 con p to 4019KS-A con 7.

        4000KS-J4 con L to 4019KS-A con 4.

        4000KS-J4 con K to 4019KS-A con 5.

        Channel B.

        4000KS-J10 con d to 4019KS-B con 6.

        4000KS-J10 con p to 4019KS-B con 7.

        4000KS-J10 con L to 4019KS-B con 4.

        4000KS-J10 con K to 4019KS-B con 5.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    24. SUBTASK 71-00-00-750-075 The Procedure to Correct the Message RELAY BOX/HC/EEC

    1. Replace the relay box (4100KS). Refer to TASK 72-00-32-050-002 for the removal and TASK 72-00-32-450-002 for the installation. If the fault continues do step B.

      2. Disconnect the harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        351/22 do step B.(1) for channel A or B.

        352/20 do step B.(2) for channel A or B.

        352/21 do step B.(3) for channel A or B.

        156/22 do step B.(1) and B.(4) for channel A or B.

      1. Channel A.

        4100KS-A con 5 to 4000KS-J5 con P.

        4100KS-A con 4 to 4000KS-J5 con g.

        4100KS-A con 10 to 4000KS-J2 con D.

        4100KS-A con 3 to 4000KS-J2 con E.

        Channel B.

        4100KS-E con 5 to 4000KS-J11 con P.

        4100KS-E con 4 to 4000KS-J11 con g.

        4100KS-E con 10 to 4000KS-J8 con D.

        4100KS-E con 3 to 4000KS-J8 con E.

        If a fault is found repair as necessary.

      2. Channel A.

        4100KS-A con 6 to 4000KS-J3 con N.

        4100KS-A con 7 to 4000KS-J3 con M.

        Channel B.

        4100KS-E con 6 to 4000KS-J9 con N.

        4100KS-E con 7 to 4000KS-J9 con M.

        If a fault is found repair as necessary.

      3. Channel A.

        4100KS-A con 9 to 4000KS-J3 con R.

        4100KS-A con 8 to 4000KS-J3 con g.

        Channel B.

        4100KS-E con 9 to 4000KS-J9 con R.

        4100KS-E con 8 to 4000KS-J9 con g.

        If a fault is found repair as necessary.

      4. Channel A and channel B 115VAC Heater Power to 4014KSA con 4 and con 5.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    25. SUBTASK 71-00-00-750-076 The Procedure to Correct the Message STARTER VALVE/HC/EEC

    1. Replace the pneumatic starter valve (4005KS). Refer to TASK 72-00-32-050-008 for the removal and TASK 72-00-32-450-008 for the installation. If the fault continues do step B.

      2. Disconnect the starter valve harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        351/27 do step B.(1) for channel A or B.

        156/15 do step B.(2) for channel A or B.

        156/20 do step B.(2) for channel A and B.

      1. Channel A.

        4000KS-J3 con T to 4005KS-A con 1.

        4000KS-J3 con i to 4005KS-A con 2.

        Channel B.

        4000KS-J9 con T to 4005KS-A con 3.

        4000KS-J9 con i to 4005KS-A con 4.

        If a fault is found repair as necessary.

      2. Channel A.

        4000KS-J2 con q to 4005KS-A con 5.

        4000KS-J2 con p to 4005KS-A con 6.

        Channel B.

        4000KS-J8 con q to 4005KS-A con 7.

        4000KS-J8 con p to 4005KS-A con 8.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    26. SUBTASK 71-00-00-750-077 The Procedure to Correct the Messages REV HCU/REV SL ChA/HC, REV HCU/REV SL CHB/HC

    1. Replace the stow and lock sensor simulator. If the fault continues do step B.

    2. Refer to maintenance word 145/27 in TASK 71-00-00-810-001 and do the necessary corrective procedure.

    27. SUBTASK 71-00-00-750-079 The Procedure to Correct the Message FADEC RESET SW/EEC

    1. Replace the EEC reset switch. If the fault continues do step B.

      2. Disconnect the reset switch harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A or B for the ARINC lable/bit 352/22.

      1. Channel A.

        4000KS-J1 con A to 406VC-A con 2.

        4000KS-J1 con X to 406VC-A con 9.

        Channel B.

        4000KS-J7 con A to 407VC-A con 2.

        4000KS-J7 con X to 407VC-A con 9.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    28. SUBTASK 71-00-00-750-080 The Procedure to Correct the Message 7TH BLD D SOL/HC/EEC

    1. Replace the HP compressor stage 7 solenoid valve (4020KS2). Refer to TASK 72-00-32-050-009 for the removal and TASK 72-00-32-450-009 for the installation. If the fault continues do step B.

      2. Disconnect the solenoid valve harness and check the electrical cables, plugs and receptacles. Check for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel A.

        4000KS-J5 con N to 4020KS2-A con 3.

        4000KS-J5 con f to 4020KS2-A con 4.

        Channel B.

        4000KS-J11 con N to 4020KS2-A con 6.

        4000KS-J11 con f to 4020KS2-A con 7.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    29. SUBTASK 71-00-00-750-082 The Procedure to Correct the Message PERM SW/HCU/HC

    1. The steps given after the ARINC lable/bit below are the steps which are applicable to that given lable/bit.

      354/14 do steps B. and C. for channel A and B.

      157/29 do steps A. and C. for channel A and B.

    2. Replace the aircraft permission switch simulator. Continue with the procedure if the fault continues.

    3. Replace the thrust reverser control unit simulator. Continue with the procedure if the fault continues.

      4. Disconnect the thrust reverser control unit harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel A.

        4000KS-J3 con A to 4000VC con 12.

        4000KS-J3 con B to 4000VC con 28.

        4000KS-J3 con D to 4000VC con 13.

        4000KS-J3 con C to 4000VC con 29.

        Channel B.

        4000KS-J9 con A to 4001VC con 12.

        4000KS-J9 con B to 4001VC con 28.

        4000KS-J9 con D to 4001VC con 13.

        4000KS-J9 con C to 4001VC con 29.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4000VC-A con 12 to 402VC-A con 9.

        4000VC-A con 28 to 4101KS-nA con 5.

        4000VC-A con 13 to 4101KS-nA con 2.

        4000VC-A con 29 to 4101KS-nA con 3.

        Channel B.

        4001VC-A con 12 to 403VC-A con 9.

        4001VC-A con 28 to 4101KS-nB con 5.

        4001VC-A con 13 to 4101KS-nB con 2.

        4001VC-A con 29 to 4101KS-nB con 3.

        If a fault is found repair as necessary. If no fault is found continue with the check.

      3. Channel A.

        4101KS-nA con 4 to 402VC-A con 8.

        4000KS-J1 con C to 4101KS-nA con 7.

        4000KS-J1 con k to 4101KS-nA con 6.

        Channel B.

        4101KS-nB con 4 to 403VC-A con 8.

        4000KS-J7 con C to 4101KS-nB con 7.

        4000KS-J7 con k to 4101KS-nB con 6.

    30. SUBTASK 71-00-00-750-083 The Procedure to Correct the Message TCA VLV SOL/HC/EEC

    1. Replace the stage 10 air (turbine make-up air) solenoid valve (4028KS). Refer to TASK 72-00-32-050-010 for the removal and TASK 72-00-32-450-010 for the installation. If the fault continues do step B.

      2. Disconnect the solenoid harness and check the electrical cables, plugs and receptacles. Check for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A or B for the ARINC lable/bit 354/15.

      1. Channel A.

        4000KS-J5 con G to 4028KS-A con 3.

        4000KS-J5 con b to 4028KS-A con 4.

        Channel B.

        4000KS-J11 con G to 4028KS-A con 6.

        4000KS-J11 con b to 4028KS-A con 7.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    31. SUBTASK 71-00-00-750-084 The Procedure to Correct the Message ENG GROUP 2 SOL/EEC

      1. Check the engine group 2 solenoids for shorts across their windings and shorts to ground and open circuits initially caused by short circuits.

        This check must be done for channel A or B for the ARINC lable/bit 354/17.

        1. Channel A.

        1. Fuel diverter and return valve solenoid (4018KS) con E, V.

        2. Stage 10 air solenoid valve (4028KS) con 3, 4.

        3. HP compressor stage 7 solenoid valve (4020KS2) con 3, 4.

        4. HP compressor stage 10 solenoid valve (4023KS) con 3, 4.

        5. P2T2 sensor heater relay (4100KS), 4100KS-A receptacle J con 5, 4.

        2. Channel B.

        1. Fuel diverter and return valve (4018KS) con M, N.

        2. Stage 10 air solenoid valve (4028KS) con 6, 7.

        3. HP compressor stage 7 solenoid valve (4020KS2) con 6, 7.

        4. HP compressor stage 10 solenoid valve (4023KS) con 6, 7.

        5. P2T2 sensor heater relay (4100KS), 4100KS-E receptacle J con 5, 4.

    2. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    32. SUBTASK 71-00-00-750-085 The Procedure to Correct the Message 7TH BLD A SOL/HC/EEC

    1. Replace the HP compressor stage 7 solenoid valve (4020KS3). Refer to TASK 72-00-32-050-009 for the removal and TASK 72-00-32-450-009 for the installation. If the fault continues do step B.

      2. Disconnect the solenoid harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A or B for the ARINC lable/bit 354/18.

      1. Channel A.

        4000KS-J5 con M to 4020KS3-A con 3.

        4000KS-J5 con e to 4020KS3-A con 4.

        Channel B.

        4000KS-J11 con M to 4020KS3-A con 6.

        4000KS-J11 con e to 4020KS3-A con 7.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    33. SUBTASK 71-00-00-750-086 The Procedure to Correct the Message 7TH BLD B SOL/HC/EEC

    1. Replace the HP compressor stage 7 solenoid value (4020KS1). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

      2. Disconnect the solenoid harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A or B for the ARINC lable/bit 354/19.

      1. Channel A.

        4000KS-J5 con q to 4020KS1-A con 3.

        4000KS-J5 con p to 4020KS1-A con 4.

        Channel B.

        4000KS-J11 con q to 4020KS1-A con 6.

        4000KS-J11 con p to 4020KS1-A con 7.

        If a fault is found repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    34. SUBTASK 71-00-00-750-087 The Procedure to Correct the Message 10TH BLD VLV SOL/HC/EEC

    1. Replace the HP compressor stage 10 solenoid valve (4023KS). Refer to TASK 72-00-32-050-011 for the removal and TASK 72-00-32-450-011 for the installation. If the fault continues do step B.

      2. Disconnect the solenoid harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A or B for the ARINC lable/bit 354/20.

      1. Channel A.

        4000KS-J5 con H to 4023KS-A con 3.

        4000KS-J5 con c to 4023KS-A con 4.

        Channel B.

        4000KS-J11 con H to 4023KS-A con 6.

        4000KS-J11 con c to 4023KS-A con 7.

        If a fault is found, repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    35. SUBTASK 71-00-00-750-088 The Procedure to Correct the Message 10TH SV BLD SOL/HC/EEC

    1. Replace the HP stage 7 and 10 air solenoid valve (4029KS). Refer to TASK 72-00-32-050-012 for the removal and TASK 72-00-32-450-012 for the installation. If the fault continues do step B.

      2. Disconnect the solenoid harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A or B for the ARINC lable/bit 354/21.

      1. Channel A.

        4000KS-J3 con S to 4029KS-A con 3.

        4000KS-J3 con h to 4029KS-A con 4.

        Channel B.

        4000KS-J9 con S to 4029KS-A con 6.

        4000KS-J9 con h to 4029KS-A con 7.

        If a fault is found, repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    36. SUBTASK 71-00-00-750-089 The Procedure to Correct the Message FUL DIV RET VLV/HC/EEC

    1. Replace the fuel diverter and return valve (4018KS). Refer to TASK 72-00-32-050-013 for the removal and TASK 72-00-32-450-013 for the installation. If the fault continues do step B.

      2. Disconnect the fuel diverter and return valve harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        The steps given after the ARINC lable/bit below are the steps that must be done first for that given lable/bit. If these steps do not correct the fault it will be necessary to continue with the check.

        354/22 do step B.(1) for channel A or B.

        157/16 do step B.(2) for channel A or B.

        157/17 do step B.(3) for channel A or B.

        157/19 do step B.(2) and (3) for channel A or B.

        157/22 do steps B.(2) and (3) for channel A and B.

        157/26 do steps B.(2) and (4) for channel A or B.

        352/17 do steps B.(2) and B.(3) for channel A or B.

      1. Channel A.

        4000KS-J5 con F to 4018KS-B con E.

        4000KS-J5 con a to 4018KS-B con V.

        Channel B.

        4000KS-J11 con F to 4018KS-B con M.

        4000KS-J11 con a to 4018KS-B con N.

        If a fault is found, repair as necessary.

      2. Channel A.

        4000KS-J4 con P to 4018KS-A con L.

        4000KS-J4 con R to 4018KS-A con M.

        4000KS-J4 con S to 4018KS-A con B.

        4000KS-J4 con T to 4018KS-A con C.

        Channel B.

        4000KS-J10 con P to 4018KS-A con H.

        4000KS-J10 con R to 4018KS-A con J.

        4000KS-J10 con S to 4018KS-A con E.

        4000KS-J10 con T to 4018KS-A con F.

        If a fault is found, repair as necessary.

      3. Channel A.

        4000KS-J3 con e to 4018KS-B con G.

        4000KS-J3 con l to 4018KS-B con H.

        Channel B.

        4000KS-J9 con e to 4018KS-B con Y.

        4000KS-J9 con L to 4018KS-B con K.

        If a fault is found, repair as necessary.

      4. Channel A.

        4000KS-J2 con r to 4018KS-B con B.

        4000KS-J2 con t to 4018KS-B con C.

        Channel B.

        4000KS-J8 con r to 4018KS-B con R.

        4000KS-J8 con t to 4018KS-B con S.

        If a fault is found, repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    37. SUBTASK 71-00-00-750-090 The Procedure to Correct the Message AUTOSTART GROUP SOL/EEC

      1. Check the autostart group solenoids for shorts across their windings and shorts to ground and open circuits initially caused by short circuits.

        This check must be done for channel A or B for the ARINC lable/bit 354/26.

        1. Channel A.

        1. Ignition No.1 relay (4100KS), 4100KS-A receptacle J con 6, 7.

        2. Ignition No.2 relay (4100KS), 4100KS-A receptacle J con 9, 8.

        3. Pneumatic starter valve (4005KS) con 1, 2.

        4. 10th stage service bleed solenoid (4029KS) con 3, 4.

        2. Channel B.

        1. Ignition No.1 relay (4100KS), 4100KS-E receptacle J con 6, 7.

        2. Ignition No.2 relay (4100KS), 4100KS-E receptacle J con 9, 8.

        3. Pneumatic starter valve (4005KS) con 3, 4.

        4. 10th stage service bleed solenoid (4029KS) con 6, 7.

    2. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    38. SUBTASK 71-00-00-750-106 The Procedure to Correct the Message HMS - FUEL OVTMP

      1. Check for presence of other HMS faults.

      1. FUEL DIV RET VLV/HC/EEC Refer to Step.

      2. IDG OIL TEMP TC/HC/EECn Refer to Step.

      3. FUEL TEMP SENS HC/EECn Refer to Step.

      4. ACOC OIL TEMP TC/HC/EECn Refer to Step.

      5. ACOC AIR MODE VLV/HC/EECn Refer to Step.

        If set take appropriate action to resolve these faults before proceeding.

    2. Replace the FCOC. Refer to TASK 72-00-32-050-022 for the removal and TASK 72-00-32-450-022.

    3. Replace the IDG. Refer to TASK 72-00-32-050-015 for the removal and TASK 72-00-32-450-015 for the installation.

    4. Replace the IDG FCOC. Refer to TASK 72-00-32-020-004 for the removal and TASK 72-00-32-420-002 for the installation.

    5. Replace the FEC. Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    39. SUBTASK 71-00-00-750-107 The Procedure to Correct the Message HMS ENG OIL OVTMP

      1. Check for presence of other HMS faults.

      1. FUEL DIV RET VLV/HC/EEC Refer to Step.

      2. IDG OIL TEMP TC/HC/EEC Refer to Step.

      3. FUEL TEMP SENS/HC/EECn Refer to Step.

      4. ACOC OIL TEMP TC/HC/EECn Refer to Step.

      5. ACOC AIR MODE VLV/HC/EECn Refer to Step.

        If set take appropriate action to resolve these faults before proceeding.

    2. Replace the ACOC. Refer to TASK 72-00-32-050-004 for removal and TASK 72-00-32-450-004 for the installation.

    3. Visually inspect the ACOC air ducts for blockage.

    4. Replace the FCOC. Refer to TASK 72-00-32-050-022 for the removal and TASK 72-00-32-450-022.

    5. Replace the EEC. Refer to TASK 72-00-32-050-001 for removal and TASK 72-00-32-450-001 for installation.

    40. SUBTASK 71-00-00-750-108 The Procedure to Correct the Message HMS - IDG OVTMPW/REC1RC

      1. Check for presence of other HMS faults.

      1. FUEL DIV RET VLV/HC/EECn Refer to Step.

      2. IDG OIL TEMP TC/HC/EECn Refer to Step.

      3. FUEL TEMP SENS HC/EECn Refer to Step.

      4. ACOC OIL TEMP TC/HC/EECn Refer to Step.

      5. ACOC AIR MODE VLV/HC/EECn Refer to Step.

        If set take appropriate action to resolve these faults before proceeding.

    2. Replace aircraft tank pressure holding valve. Refer to TASK 72-00-32-050-013 for removal and TASK 72-00-32-450-013 for the installation.

    3. Replace the IDG FCOC. Refer to TASK 72-00-32-020-004 for removal and TASK 72-00-32-420-002 for the installation.

    4. Replace the EEC. Refer to TASK 72-00-32-050-001 for removal and TASK 72-00-32-450-001 for installation.

    41. SUBTASK 71-00-00-750-109 The Procedure to Correct the Message HMS - IDG OIL OVTMP

      1. Check for presence of other HMS faults.

      1. FUEL DIV RET VLV/HC/EECn Refer to Step.

      2. IDG OIL TEMP TC/HC/EECn Refer to Step.

      3. FUEL TEMP SENS HC/EECn Refer to Step.

      4. ACOC OIL TEMP TC/HC/EECn Refer to Step.

      5. ACOC AIR MODE VLV/HC/EECn Refer to Step.

        If set take appropriate action to resolve these faults before proceeding.

    2. Replace the IDG FCOC. Refer to TASK 72-00-32-020-004 for removal and TASK 72-00-32-420-002 for the installation.

    3. Replace the IDG. Refer to TASK 72-00-32-050-015 for removal and TASK 72-00-32-450-015 for the installation.

    4. Replace the EEC. Refer to TASK 72-00-32-050-001 for removal and TASK 72-00-32-450-001 for the installation.

    42. SUBTASK 71-00-00-750-110 The Procedure to Correct the Message HMS - TC FAIL SAFED

      1. Check for presence of other HMS faults.

      1. IDG OIL TEMP TC/HC/EECn Refer to Step.

      2. FUEL TEMP SENS/HC/EECn Refer to Step.

      3. ACOC OIL TEMP TC/HC/EECn Refer to Step.

        If set take appropriate action to resolve these faults before proceeding.

    2. Replace the EEC. Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    43. SUBTASK 71-00-00-750-092 The Procedure to Correct the Message T2.5 SENS/HC/EEC

    1. This procedure must be done for channel B only for the ARINC lable/bit 155/24.

      2. Disconnect the harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. 4000KS-J10 con W to 4009VC-A con 41.

        4000KS-J10 con V to 4009VC-A con 24.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

      2. 4009VC con 41 to 4026KS-A Chromel.

        4009VC con 24 to 4026KS-A Alumel.

        If a fault is found, repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    4. Replace the T2.5 sensor (4026KS). Refer to TASK 72-00-32-050-014 for the removal and TASK 72-00-32-450-014 for the installation.

    44. SUBTASK 71-00-00-750-094 The Procedure to Correct the Message 28V POWER/EEC

    1. This procedure must be done as shown below for the given ARINC lable/bit.

      156/19 do steps A. and B. for channel A or B.

    2. Check the EEC stand 28V power. If the fault continues do step B.

      3. Disconnect the 28V power harness and check the electrical cables, plugs and receptacles. Check for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel A.

        4000KS-J3 con m to 4000VC con 6.

        4000KS-J3 con r to 4000VC con 17.

        Channel B.

        4000KS-J9 con m to 4001VC con 6.

        4000KS-J9 con r to 4001VC con 17.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4000VC-A con 6 to 402VC-A con 21.

        4000VC-A con 17 to 402VC-A con 23.

        Channel B.

        4001VC-A con 6 to 403VC-C con 21.

        4001VC-A con 17 to 403VC-A con 23.

        If a fault is found, repair as necessary.

    4. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    45. SUBTASK 71-00-00-750-095 The Procedure to Correct the Message ATHR DISC 2 LINE/EEC

      1. Disconnect the autothrust discrete lines 1 and 2 harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A and B for the ARINC lable/bit 156/24.

      1. 4000KS-J1 con F to 406VC-A con 21.

        4000KS-J1 con a to 406VC-A con 22.

        4000KS-J1 con E to 406VC-A con 23.

        4000KS-J7 con F to 406VC-A con 21.

        4000KS-J7 con a to 406VC-A con 22.

        4000KS-J7 con E to 406VC-A con 23.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

    2. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    46. SUBTASK 71-00-00-750-096 The Procedure to Correct the Message ATHR DISC 1 LINE/EEC

      1. Disconnect the autothrust discrete lines 1 and 2 harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A and B for the ARINC lable/bit 156/25.

      1. 4000KS-J1 con E to 406VC-A con 23.

        4000KS-J1 con a to 406VC-A con 22.

        4000KS-J1 con F to 406VC-A con 21.

        4000KS-J7 con E to 406VC-A con 23.

        4000KS-J7 con a to 406VC-A con 22.

        4000KS-J7 con F to 406VC-A con 21.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

    2. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    47. SUBTASK 71-00-00-750-097 The Procedure to Correct the Message ENG POS INDIC HC/EEC

      1. Disconnect the engine position indicator harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done as shown below for the applicable ARINC lable/bit.

        156/26 do this check for channel A and B.

        156/27 do this check for channel A and B.

        157/28 do this check for channel A and B.

      1. Channel A.

        4000KS-J1 con r to 407VC-A con 23.

        4000KS-J1 con q to 407VC-A con 21.

        4000KS-J1 con t to 407VC-A con 22.

        Channel B.

        4000KS-J7 con r to 407VC-A con 23.

        4000KS-J7 con q to 407VC-A con 21.

        4000KS-J7 con t to 407VC-A con 22.

        If a fault is found, repair as necessary.

    2. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    48. SUBTASK 71-00-00-750-099 The Procedure to Correct the Message IDG OIL TEMP TC/HC/EEC

    1. Replace the IDG oil temperature thermocouple (4015KS). Refer to TASK 72-00-32-050-015 for the removal and TASK 72-00-32-450-015 for the installation. If the fault continues do step B.

      2. Disconnect the thermocouple harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done as shown below for the applicable ARINC lable/bit.

        157/14 do this check for channel A or B.

        157/20 do this check for channel A and B.

      1. Channel A.

        4000KS-J4 con j to 4015KS-A con 2.

        4000KS-J4 con k to 4015KS-A con 3.

        If a fault is found, repair as necessary.

        Channel B.

        4000KS-J10 con j to 4015KS-A con 5.

        4000KS-J10 con k to 4015KS-A con 6.

        If a fault is found, repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    49. SUBTASK 71-00-00-750-100 The Procedure to Correct the Message FUEL DIV RET VLV/EEC

    1. This procedure must be done for channel A or B for the ARINC lable/bit 157/23.

    2. Replace the fuel diverter and return valve (4018KS). Refer to TASK 72-00-32-050-013 for the removal and TASK 72-00-32-450-013 for the installation. If the fault continues do step B.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    50. SUBTASK 71-00-00-750-101 The Procedure to Correct the Message TCA VLV/SOL/EEC

    1. This procedure must be done for channel A or B for the ARINC lable/bit 157/24.

    2. Replace the stage 10 to HP turbine air valve (4025KS). Refer to TASK 72-00-40-050-005 for the removal and TASK 72-00-40-450-005 for the installation. If the fault continues do step B.

      3. Disconnect the air valve harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel A.

        4000KS-J2 con k to 4008VC-A con 19.

        4000KS-J2 con m to 4008VC-A con 35.

        Channel B.

        4000KS-J8 con k to 4009VC-A con 16.

        4000KS-J8 con m to 4009VC-A con 31.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4008VC con 19 to 4006VC-A con 10.

        4008VC con 35 to 4006VC-A con 3.

        Channel B.

        4009VC con 16 to 4006VC-A con 4.

        4009VC con 31 to 4006VC-A con 5.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

      3. Channel A.

        4006VC con 10 to 4025KS-A con A.

        4006VC con 3 to 4025KS-A con B.

        Channel B.

        4006VC con 4 to 4025KS-A con D.

        4006VC con 5 to 4025KS-A con E.

        If a fault is found, repair as necessary.

    4. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    51. SUBTASK 71-00-00-750-102 The Procedure to Correct the Message TCA VLV/HC/EEC

    1. Replace the stage 10 to HP turbine air valve (4025KS). Refer to TASK 72-00-40-050-005 for the removal and TASK 72-00-40-450-005 for the installation. If the fault continues do step B.

      2. Disconnect the harness and check the electrical cables, plugs and receptacles. Check the harness for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

        This check must be done for channel A or B for the ARINC lable/bit 157/25.

      1. Channel A.

        4000KS-J2 con k to 4008VC-A con 19.

        4000KS-J2 con m to 4008VC-A con 35.

        Channel B.

        4000KS-J8 con k to 4009VC-A con 16.

        4000KS-J8 con m to 4009VC-A con 31.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

      2. Channel A.

        4008VC con 19 to 4006VC-A con 10.

        4008VC con 35 to 4006VC-A con 3.

        Channel B.

        4009VC con 16 to 4006VC-A con 4.

        4009VC con 31 to 4006VC-A con 5.

        If a fault is found, repair as necessary. If no fault is found continue with the check.

      3. Channel A.

        4006VC con 10 to 4025KS-A con A.

        4006VC con 3 to 4025KS-A con B.

        Channel B.

        4006VC con 4 to 4025KS-A con D.

        4006VC con 5 to 4025KS-A con E.

        If a fault is found, repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    52. SUBTASK 71-00-00-750-103 The Procedure to Correct the Message REV SL SENS CHA/HC/EEC

    1. Replace the thrust reverser stow and lock sensor left simulator (channel A). If the fault continues do step B.

      2. Disconnect the harness and check the electrical cables, plugs and receptacles. Check for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel A.

        4000KS-J1 con k to 4004VC-A con 3.

        4000KS-J1 con s to 4004VC-A con 2.

        4004VC con 3 to 4007KS-A con B.

        4004VC con 2 to 4007KS-A con C.

        If a fault is found, repair as necessary.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    53. SUBTASK 71-00-00-750-104 The Procedure to Correct the Message REV SL SENS CHB/HC/EEC

    1. Replace the thrust reverser stow and lock sensor right simulator (channel B). If the fault continues do step B.

      2. Disconnect the harness and check the electrical cables, plugs and receptacles. Check for continuity, shorts, open circuits, leaks to ground, bent pins and general damage.

      1. Channel B.

        4000KS-J7 con k to 4005VC-A con 3.

        4000KS-J7 con s to 4005VC-A con 2.

        4005VC con 3 to 4006KS-A con B.

        4005VC con 2 to 4006KS-A con C.

    3. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    54. SUBTASK 71-00-00-750-111 The Procedure to Correct the Message PB LINE/EEC

      1. Examine the electronic engine control (EEC) and burner pressure (PB) sensor tubes for presence of contaminates and moisture/water. If none found:

      1. Replace the EEC (4000KS). Refer to TASK 72-00-32-050-001 for the removal and TASK 72-00-32-450-001 for the installation.

    55. SUBTASK 71-00-00-750-112 The Procedure to Correct the Message P2T2 Sens/Relay Box/HCn

    1. Replace P2T2 probe (4014KS). If fault persists continue check.

    2. Replace Relay Box (probe heat) (4100KS). If fault persists check.

      3. P2T2 Probe Harness/Connector.

        1. For Channel A.

        1. 4100KS-B con 4 to 4010VC-A con 1.

          4100KS-B con 5 to 4010VC-A con 2.

        2. 4010VC con 1 to 4014KS-A con 4.

          4010VC con 2 to 4014KS-A con 5.

        3. 4100KS-A con 5 to 4000KS-J5 con P.

          4100KS-A con 4 to 4000KS-J5 con G.

          4100KS-A con 10 to 4000KS-J2 con D.

          4100KS-A con 3 to 4000KS-J2 con E.

        2. For channel B.

        1. 4100KS-B con 4 to 4010VC-A con 1.

          4100KS-B con 5 to 4010VC-A con 2.

        2. 4010VC con 1 to 4014KS-A con 4.

          4010VC con 2 to 401KS-A con 5.

        3. 4100KS-E con 5 to 4000KS-J11 con P.

          4100KS-E con 4 to 4000KS-J11 con G.

          4100KS-E con 10 to 4000KS-J8 con D.

          4100KS-E con 3 to 4000KS-J8 con E.

    56. SUBTASK 71-00-00-750-113 The Procedure to Correct the Message ENG GROUP 1 SOL/EECn

    1. Check Engine Group 1 solenoids for shorts across their windings and shorts to ground and open circuits initially caused by chort circuits.

      2. Group 1 solenoids channel A.

      1. 7th stage bleed A solenoid (4020KS3) con 3, 4.

      2. 7th stage bleed B solenoid (4020KS1) con 3, 4.

      3. Repeat for channel B.

      1. 7th stage bleed A solenoid (4020KS3) con 6, 7.

      2. 7th stage bleed B solenoid (4020KS1) con 6, 7.

    4. EECn (4000KS).

Requirements After Job Completion

Follow-On Conditions

NONE