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Home >> Acura >> 2012 >> RL >> Repair and Diagnosis >> Engine Performance >> System >> PGM-FI System >> DTC Troubleshooting >> DTC U0114: F-CAN Malfunction (PCM-SH-AWD Control Unit)
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DTC U0114: F-CAN Malfunction (PCM-SH-AWD Control Unit)

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  1. Turn the ignition switch to ON (II).
  2. Check for Pending or Confirmed DTCs with the HDS.

    Are DTC U0029 and U0114 indicated at the same time? 

    YES  -Go to the troubleshooting for DTC U0029 (see DTC U0029: F-CAN MALFUNCTION (BUS-OFF - PCM)  ).

    NO  -Go to step 3.

  3. Clear the DTC with the HDS.
  4. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC U0114 indicated? 

    YES  -Go to step 5.

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

  5. Check for communication to the SH-AWD system with the HDS.

    Does the HDS communicate with the SH-AWD control unit? 

    YES  -Go to step 6.

    NO  -Go to the DLC CIRCUIT TROUBLESHOOTING  .

  6. Turn the ignition switch to LOCK (0).
  7. Jump the SCS line with the HDS.
  8. Disconnect SH-AWD control unit connector A (26P).
  9. Disconnect PCM connector A (49P).
  10. Check for continuity between PCM connector
    Fig 1: Checking Continuity Between PCM Connector
    G07362006Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Go to step 11.

    NO  -Repair an open in the wire between the PCM (A48) and the SH-AWD control unit, then go to step  12.

  11. Check for continuity between PCM connector terminal A49 and SH-AWD control unit connector A (26P) terminal No. 10.
    Fig 2: Checking Continuity Between PCM Connector Terminal A49 And SH-AWD Control Unit Connector A (26P) Terminal No. 10
    G07362007Courtesy of AMERICAN HONDA MOTOR CO., INC.

    Is there continuity? 

    YES  -Substitute a known-good SH-AWD control unit (see SH-AWD® CONTROL UNIT REPLACEMENT ), then go to step 12 and recheck. If DTC U0114 is not indicated after substitution, replace the original SH-AWD control unit (see SH-AWD® CONTROL UNIT REPLACEMENT ), then go to step 12.

    NO  -Repair an open in the wire between the PCM (A49) and the SH-AWD control unit, then go to step 12.

  12. Reconnect all connectors.
  13. Turn the ignition switch to ON (II).
  14. Reset the PCM with the HDS.
  15. Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
  16. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC U0114 indicated? 

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

    NO  -Troubleshooting is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC'S TROUBLESHOOTING .

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