Headlight Switch Back-up Circuit Malfunction
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. Turn the headlight switch ON for 5 seconds and OFF.
4. Check for DTCs with the HDS.
Is DTC B1075 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections.?
5. Select BODY ELECTRICAL SYSTEM SELECT menu, then enter the DATA LIST menu.
6. Check the ON/OFF information of the HEADLIGHT BACK-UP with the HDS.
Is OFF indicated?
YES -
Go to step 7.
NO -
Check for a short in the WHT wire between the combination switch control unit and the relay control module (H/L BACK-UP line) or between the
combination switch control unit and the MICU, if the harness is OK, replace the combination switch control unit See: Sensors and
Switches/Sensors and Switches - Wiper and Washer Systems/Wiper Switch/Service and Repair.?
7. Turn the headlight switch ON.
8. Select BODY ELECTRICAL SYSTEM SELECT menu, then enter the DATA LIST menu.
9. Check the ON/OFF information of the HEADLIGHT BACK-UP with the HDS.
Is ON indicated?
YES -
Go to the relay control module input test See: Power and Ground Distribution/Testing and Inspection/Relay Control Module Input Test and check
for a poor ground, if the GND line is OK, replace the under-hood fuse/relay box See: Maintenance/Fuses and Circuit Breakers/Fuse Block/Service
and Repair/Under-Hood Fuse/Relay Box Removal and Installation.?
NO -
Check for an open in the wire between the combination switch control unit and the relay control module (H/L BACK-UP line) or between the
combination switch control unit and the MICU, if the wire is OK, replace the combination switch control unit See: Sensors and Switches/Sensors
and Switches - Wiper and Washer Systems/Wiper Switch/Service and Repair.?
B1076
DTC Troubleshooting: B1076
DTC B1076:
Windshield Wiper Switch Back-up Circuit Malfunction
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.
