B1063

DTC Troubleshooting: B1063

DTC B1063:

Relay Control Module Lost Communication With Combination Switch Control Unit (Wiper switch 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 B1063 indicated?

YES -

Go to step 5.

NO -

Intermittent failure, the communication line is OK at this time.�

5. Check for DTCs with the HDS.

Are DTCs B1156, and B1958 also indicated?

YES -

Go to combination switch control unit input test Combination Switch Control Unit Input Test.�

NO -

Go to relay control module input test Relay Control Module Input Test.�