Many malfunctions in the electrical system are caused by poor harness/terminal conditions. 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 Intake actuator and A/C control unit main harness connector.

Measure resistance between Signal(F/B) terminal of Intake actuator harness connector and Signal(F/B) terminal of A/C-ECU harness connector.

Is the measured resistance within specifications?

	▶ 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 Intake actuator and A/C control unit main harness connector.

Measure resistance between Signal(F/B) terminal of Intake actuator harness connector and chassis ground.

Is the measured resistance within specifications?

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

Ignition "OFF"

Disconnect Intake actuator and Connect A/C control unit main harness connector.

Ignition "ON"

Measure voltage between Sensor REF(5V) terminal of Intake actuator harness connector and chassis ground.

Is the measured voltage within specifications?

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