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. Check for loose terminals between ECM/PCM connector A (49P) and EPS control unit connector A (11P).�

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

7. Short the SCS line with the HDS.

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

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

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 poor connections or loose terminals at EPS control unit connector A (11P) and ECM/PCM connector A (49P). If wires are OK, replace the EPS control unit.�

NO -

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