Control Module HVAC: Testing and Inspection

INSPECTION OF A/C CONTROLLER AND ITS CIRCUITS




A/C Controller and its circuits can be checked at A/C controller wiring couplers by measuring voltage.

CAUTION: A/C controller cannot be checked by itself. It is strictly prohibited to connect voltmeter or ohmmeter to A/C controller with controller with couplers disconnected from it.

Connector View:

Terminals (A1 - A11):

Terminals (A12 - B2):

Voltage Check
1. Remove A/C controller from vehicle.
2. Connect A/C controller couplers to A/C controller.
3. Check voltage at each terminal of couplers connected.