Interior Backlighting Circuit Test
WARNING: This page is about a different car, the 2008 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the component with the inoperative backlighting.
- Test for less than 5.0 ohms of resistance between the appropriate component ground circuit terminal listed below and ground.
- Hazard Switch - terminal J
- HVAC Control Module - terminal 10
- Radio - terminal 8 X1
- Driver Information Center - terminal 5
- Traction Control Switch - terminal 2
- Steering Wheel Control Switches - terminal 1
- Power window switch - terminal 6
- Rear wiper/washer/fog lamp switch - terminal 5
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Connect a test lamp between the appropriate component supply voltage circuit terminal listed below and ground.
- Hazard Switch - terminal I
- HVAC Control Module - terminal 1
- Radio - terminal 7 X1
- Driver Information Center - terminal 4
- Traction Control Switch - terminal 3
- Left Steering Wheel Control Switch - terminal 6
- Right Steering Wheel Control Switch - terminal 2
- Power window switch - terminal 2
- Rear wiper/washer/fog lamp switch - terminal 6
- Ignition ON, command the appropriate Incandescent Dimming or LED Dimming ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
- If the test lamp is always OFF, test the supply voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM
- If the test lamp is always ON, test the supply voltage circuit for a short to voltage. If the circuit tests normal, replace the BCM.
- If all circuits test normal, test or replace the component with the inoperative backlighting.