Component Tests and General Diagnostics
Auto-On Headlights System On-Vehicle Inspection1. Turn ignition switch to ON position and release parking brake and turn lighting switch to OFF position.
2. Cover the sensor lens of auto-on headlight controller (1) with a hand and check headlights come ON after 5 seconds. If headlights do not come ON, go to Step 4).
3. Light the sensor lens of auto-on headlight controller (1) with a light (2) and check headlights go out after 20 seconds. If headlights do not go out, go to Step 4).
If check result is of Step 1) to 3) is OK, this system is OK.
4. Disconnect auto-on headlights controller coupler (1) with ignition switch OFF.
Auto-on headlight system circuit specification
Terminal G34-6 and G34-1 (ignition switch OFF): 0 V
Terminal G34-6 and G34-1 (ignition switch ON): 10 - 14 V
Terminal G34-6 and G34-6: 10 - 14 V
Terminal G34-6 and G34-5: 10 - 14 V
Auto-On Headlight System Circuit Specification:
5. Check the voltage between terminals are as follows. If check result is not satisfactory, repair and recheck.
6. If check result of step 5) is OK, replace controller and recheck.