Rear end Door Window / Back Window Defogger Switch and Its Circuit Inspection
NOTE:
Refer to INSPECTION OF HVAC CONTROL MODULE AND ITS CIRCUIT
: for terminal number of HVAC control module.
- Remove HVAC control module referring to HVAC CONTROL MODULE REMOVAL AND INSTALLATION .
- Turn ignition switch to ON position.
- Check that the voltage between G77-3 terminal of HVAC control module connector and ground for 10 V or more.
If check result is not satisfied, check rear defogger relay and its circuit.
- Connect HVAC control module connector to HVAC control module with ignition switch turned OFF.
- Measure voltage between G77-3 terminal of HVAC control module connector and ground.
Ignition switch ON, Rear defogger switch OFF
Higher than 10 V
Ignition switch ON, Rear defogger switch ON
Less than 0.5 V
If check result is satisfied, rear defogger switch is in good condition.
If check result is not satisfied, replace HVAC control module assembly.