Many malfunctions in the electrical system are caused by poor harness(es) and terminal condition.

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 then go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Power Circuit Inspection" procedure.

IG "ON"

Disconnect left height sensor connector.

Measure voltage between power terminal of left height sensor harness connector and chassis ground.

Is the measured value within specifications?

	▶ Go to "Signal Circuit Inspection" procedure.
	▶ Repair open in the power circuit between ALS ECU and height sensor harness connector and then go to "Verification of Vehicle Repair" procedure.

IG "OFF"

Disconnect left height sensor connector and ALS ECU connector.

Measure resistance between power terminal and signal terminal of left height sensor harness connector.

Measure resistance between ground terminal and signal terminal of left height sensor harness connector.

Is the measured value within specifications?

	▶ Go to "Check for open" procedure.
	▶ Repair short in the signal circuit between ALS ECU harness connector and height sensor harness connector and then go to "Verification of Vehicle Repair" procedure.

IG "OFF"

Disconnect left height sensor connector and ALS ECU connector.

Measure resistance between signal terminal of left height sensor harness connector and signal terminal of ALS ECU harness connector.

Is the measured value within specifications?

	▶ Go to "Ground Circuit Inspection" procedure.
	▶ Repair open in the signal circuit between ALS ECU harness connector and height sensor harness connector and then go to "Verification of Vehicle Repair" procedure.

IG "OFF"

Disconnect left height sensor connector and ALS ECU connector.

Measure resistance between ground terminal of left height sensor harness connector and ground terminal of ALS ECU harness connector.

Is the measured value within specifications?

	▶ Go to "Component Inspection" procedure.
	▶ Repair open in the ground circuit between ALS ECU harness connector and height sensor harness connector and then go to "Verification of Vehicle Repair" procedure.