23-04

EPS DTC Troubleshooting: 23-04

DTC 23-04:

CAN Bus-off Malfunction

NOTE: Check for any powertrain DTCs and troubleshoot those first.

1. Turn the ignition switch to ON (II).

2. Clear the DTC with the HDS.

3. Turn the ignition switch to LOCK (0).

4. Start the engine.

5. Check for DTCs with the HDS.

Is DTC 23-04 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time.

6. Turn the ignition switch to LOCK (0).

7. Short the SCS line with the HDS.

8. Disconnect ECM/PCM connector A (49P) Service and Repair.

9. Disconnect EPS control unit connector A (11P) Service and Repair.

10. Check for continuity between EPS control unit connector A (11P) terminals and ECM/PCM connector A (49P) terminals (see table).









Is there continuity?

YES -

Check for loose terminals in the EPS control unit connectors, and repair if necessary. If no poor connections are found, replace the EPS control unit Service and Repair.

NO -

Repair an open in the wire between the EPS control unit and the ECM/PCM.