Control Module HVAC: Testing and Inspection
CLIMATE CONTROL UNIT INSPECTION1. Remove the climate control unit.
2. Connect the climate control unit connector.
3. Turn the ignition switch to ON position.
4. Measure the voltage at each climate control unit terminal and refer to the terminal voltage list.
- If not as specified, inspect the parts listed under "Action" and the related wiring harness.
- If there is any malfunction, replace the climate control unit.
Terminal Voltage List/Pinouts Part 1:
Pinouts Part 2:
Terminal voltage list (Reference)
Fan Switch
1. Remove the climate control unit.
2. Inspect for continuity between the fan switch terminals using an ohmmeter.
- If not as specified, replace the fan switch.
A/C AMPLIFIER INSPECTION
NOTE: A/C amplifier controls A/C signal as shown in the figure at right.
1. Remove the glove compartment.
2. Pull out the A/C amplifier with the connector still connected.
3. Turn the ignition switch to ON position.
4. Measure the voltage at each A/C amplifier terminal or climate control unit terminal and refer to the terminal voltage list.
- If not as specified, inspect the parts listed under "Action" and the related wiring harness.
- If there is no malfunction under "Action", replace the A/C amplifier.
Terminal Voltage List:
Terminal Voltage List (Reference)