B1276

DTC Troubleshooting: B1275, B1276, B1278

DTC B1275:

Headlight Switch OFF Position Circuit Malfunction

DTC B1276:

Headlight Switch Parking (SMALL) Position Circuit Malfunction

DTC B1278:

Headlight Switch ON Position Circuit Malfunction

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), and wait for 2 seconds.

3. Turn the parking (SMALL) light switch ON and wait for 2 seconds.

4. Turn the headlight light switch (LOW) ON and wait for 2 seconds.

5. Change the dimmer switch position from low beam to high beam and wait for 2 seconds.

6. Check for DTCs with the HDS.

Are DTCs B1275, B1276, or B1278 indicated?

YES -

Go to step 7.

NO -

Intermittent failure, the combination light switch and the combination switch control unit are OK at this time. Check for loose or poor connections at the combination light switch connector, and at the combination switch control unit connector.�

7. Turn the ignition switch to LOCK (0).

8. Disconnect the combination light switch 12P connector from the wiper/washer switch.

9. Do the combination light switch test Service and Repair.

Is the combination light switch OK?

YES -

Faulty combination switch control unit, replace the wiper/washer switch.�

NO -

Replace the combination light switch.�