Rear MICU 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 See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/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 B1957 and/or B1958 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections between the rear MICU and the combination switch control
unit.?
5. Check for DTCs with the HDS.
Are DTCs B1007, B1062, B1063, B1155, B1156, B1957, B1958, and/or B2969 all indicated?
YES -
Do the combination switch control unit input test See: Wiper and Washer Systems/Testing and Inspection/Wiper/Washer Switch (Combination
Switch Control Unit) Input Test.?
NO -
Do the rear MICU input test See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component
Tests and General Diagnostics/Rear MICU Input Test.?
B1958
DTC Troubleshooting: B1957, B1958
DTC B1957:
Rear MICU Lost Communication with Combination Switch Control Unit (HLSW Message)
DTC B1958:
Rear MICU 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 See: Powertrain
Management/Computers and Control Systems/Information Bus/Testing and Inspection/Component Tests and General Diagnostics/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 B1957 and/or B1958 indicated?
