Circuit/System Testing
WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the appropriate sunload sensor harness connector at the sunload/ambient light sensor.
- Test for less than 1.0 Ω of resistance between the ground circuit terminal C and ground.
- If greater than the specified range, test the ground circuit terminal C for an open/high resistance.
- Ignition ON, verify the appropriate sunload sensor parameter listed below is greater than 250 counts.
- Driver sunload sensor signal circuit terminal A at the sunload / ambient light sensor.
- Passenger sunload sensor signal circuit terminal B at the sunload / ambient light sensor.
- If not the specified value, test the appropriate signal circuit terminal A or B for a short to ground. If the circuit tests normal, replace the HVAC control module.
- Install a 3A fused jumper wire between the ground circuit terminal C and the signal circuit terminal of the appropriate sensor circuit listed below. Verify the appropriate sunload sensor parameter is less than 5 counts.
- Driver sunload sensor signal circuit terminal A at the sunload / ambient light sensor.
- Passenger sunload sensor signal circuit terminal B at the sunload / ambient light sensor.
- If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the HVAC control module.
- If all circuits test normal, test or replace the sunload sensor / ambient light sensor.