Operation CHARM: Car repair manuals for everyone.

Control Module HVAC: Testing and Inspection

CHECK FAN CONTROL AMP

1) Connect fan control amp harness connector.
2) Ignition switch ON. Fan switch OFF.







3) Measure voltage of fan control amp. output signal.
4) Ignition switch OFF.
5) Disconnect fan control amp harness connector.







6) Check circuit continuity of fan control amp.