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Home >> Honda >> 2013 >> CR-Z Base, Automatic CVT Trans >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Communication Systems (F-Can, IMA-Can, K-Line) >> DTC Troubleshooting >> DTC U0029: F-CAN Malfunction (BUS-OFF (ECM/PCM))

DTC U0029: F-CAN Malfunction (BUS-OFF (ECM/PCM))

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

    Is DTC U0029 indicated? 

    YES  -Go to step  4.

    NO  -Intermittent failure, the system is OK at this time.

  4. Update the ECM/PCM if it does not have the latest software (see ELD REPLACEMENT ), or substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).
  5. Check for Pending or Confirmed DTCs with the HDS.

    Is DTC U0029 indicated? 

    YES  -If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ), then recheck. If the ECM/PCM was substituted, go to step  1.

    NO  -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, replace the original ECM/PCM (see ECM/PCM REPLACEMENT ). If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC'S TROUBLESHOOTING .

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