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Home >> Acura >> 2007 >> RL >> Repair and Diagnosis >> Engine Performance >> System >> PGM-FI System >> DTC Troubleshooting >> DTC U0114: F-CAN Malfunction (SH-AWD Control Unit-PCM)
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DTC U0114: F-CAN Malfunction (SH-AWD Control Unit-PCM)

NOTE:
  • Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  • If DTC U0073 is stored at the same time as DTC U0114, troubleshoot DTC U0073 first, then recheck for DTC U0114.
  1. Turn the ignition switch ON (II).
  2. Clear the DTC with the HDS.
  3. Check for Temporary DTCs or DTCs with the HDS.

    Is DTC U0114 indicated? 

    YES  - Go to step 4.

    NO  - Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the gauge control module, the SH-AWD control unit, and the PCM

  4. Check for Temporary DTCs or DTCs with the HDS.

    Is SH-AWD system DTC 41 and/or 77 indicated? 

    YES  - Go to step 5.

    NO  - Go to step  8.

  5. Turn the ignition switch OFF.
  6. Disconnect SH-AWD control unit connector A (26P).
  7. Check for continuity between SH-AWD control unit connector terminals A10 and A11.
    Fig 1: Checking Continuity Between SH-AWD Control Unit Connector Terminals A10 And A11
    G05494416Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Substitute a known-good SH-AWD control unit, then go to step  16 and recheck. If DTC U0114 is not indicated, replace the original SH-AWD control unit, then go to step  16.

    NO  - Repair open in the wire between the SH-AWD control unit (A12 (A10)* and the PCM (E15 (E26)*), then go to step  16.

    *:CANL line

  8. Check for a poor connection at SH-AWD control unit connectors A (26P) and B (8P).

    Is the connection OK? 

    YES  - Go to step 9.

    NO  - Repair the poor connection at SH-AWD control unit connectors A (26P) and B (8P), then go to step  16.

  9. Turn the ignition switch OFF.
  10. Disconnect SH-AWD control unit connector A (26P).
  11. Turn the ignition switch ON (II).
  12. Measure voltage between SH-AWD control unit connector terminal A13 and body ground.
    Fig 2: Measuring Voltage Between SH-AWD Control Unit Connector Terminal A13 And Body Ground
    G05494417Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there battery voltage? 

    YES  - Go to step 13.

    NO  - Check the SH-AWD system, then go to step  16.

  13. Turn the ignition switch OFF.
  14. Disconnect SH-AWD control unit connector B (8P).
  15. Check for continuity between body ground and SH-AWD control unit connector terminals B2 and B3 individually, and between SH-AWD control unit connector terminal A12 and body ground.
    Fig 3: Checking Continuity Between Body Ground And SH-AWD Control Unit Connector Terminals B2 And B3
    G05494418Courtesy of AMERICAN HONDA MOTOR CO., INC.
    Fig 4: Checking Continuity Between Body Ground And SH-AWD Control Unit Connector Terminals B2 And B3
    G05494419Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  - Substitute a known-good SH-AWD control unit, then go to step 16 and recheck. If DTC U0114 is not indicated, replace the original SH-AWD control unit, then go to step 16.

    NO  - Repair open in the wire between the SH-AWD control unit and G652, then go to step 16.

  16. Reconnect all connectors.
  17. Turn the ignition switch ON (II).
  18. Reset the PCM with the HDS.
  19. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
  20. Check for Temporary DTCs or DTCs with the HDS.

    Is DTC U0114 indicated? 

    YES  - Check for poor connections or loose terminals at the gauge control module, the SH-AWD control unit, and the PCM, then go to step  1.

    NO  - Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTCs troubleshooting

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