Many malfunctions in the electrical system are caused by poor connection. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,or damage.

Has a problem been found?

	▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
	▶ Go to "W/Harness Inspection" procedure.

Ignition "OFF"

Disconnect Passenger Temperature Actuator(Air mix potentiometer) and A/C control Module main harness connector.

Measure resistance between WARM terminal of Passenger Temperature Actuator(Air mix potentiometer) harness connector and WARM terminal of A/C-Module harness connector.

Measure resistance between COOL terminal of Passenger Temperature Actuator(Air mix potentiometer) harness connector and COOL terminal of A/C-Module harness connector.

Is the measured resistance within specification?

	▶ Go to "Check short to ground in harness" as follows.
	▶ Check for open in harness. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.

Ignition "OFF"

Disconnect Passenger Temperature Actuator(Air mix potentiometer) and A/C control Module main harness connector.

Measure resistance between WARM terminal of Passenger Temperature Actuator(Air mix potentiometer) harness connector and chassis ground .

Measure resistance between COOL terminal of Passenger Temperature Actuator(Air mix potentiometer) harness connector and chassis ground .

Is the measured resistance within specification?

	▶ Go to " Component inspection" procedure.
	▶ Check for short to ground in control harness. ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.