B1183

DTC Troubleshooting: B1183

DTC B1183:

Gauge Control Module Lost Communication With EPS Control Unit (EPS Message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back to ON (II).

3. Wait for at least 6 seconds.

4. Check for DTCs with the HDS.

Is DTC B1183 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the system is OK at this time. Check for loose or poor connections.

5. Check for DTCs in the EPS with the HDS.

Are any DTCs indicated?

YES -

Go to the indicated DTCs troubleshooting, then recheck.

NO -

Go to step 6.

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

7. Disconnect the gauge control module 32P connector.

8. Disconnect EPS control unit connector C (16P).

9. Check for continuity between gauge control module 32P connector terminals No. 20 and No. 19 and EPS control unit connector C (16P) terminals No. 10 and No. 9 respectively.





Is there continuity?

YES -

Substitute a known-good EPS control unit, and recheck. If the indication goes away, replace the original EPS control unit Service and Repair. If the DTC is still present, replace the gauge control module Service and Repair.

NO -

Repair an open in the wires.