B1158

DTC Troubleshooting: B1158

DTC B1158: Gauge Control Module Lost Communication with Relay Control Module (RM 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 6 seconds or more.

4. Check for DTCs with the HDS.

Is DTC B1158 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 with the HDS.

Is DTC B1005 also indicated?
YES - Do the relay control module input test. Relay Control Module Input Test

NO - Do the gauge control module input test. Gauge Control Module Input Test