B1062

DTC Troubleshooting: B1062, B1063

DTC B1062: Relay Control Module Lost Communication with Combination Switch Control Unit (HLSW Message)

DTC B1063: Relay Control Module Lost Communication with Combination Switch Control Unit (WIPSW 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.

Are DTCs B1062 and/or B1063 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.

B1062: Are DTCs B1007 and B1155 also indicated? B1063: Is DTC B1156 also indicated?
YES - Do the combination switch control unit input test. Combination Switch Control Unit Input Test

NO - Do the relay control module input test. Relay Control Module Input Test