Many malfunctions in the electrical system are caused by poor harness and terminal connections.

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 " Signal Circuit Inspection " procedure.

IG "OFF" and disconnect CKPS connector.

IG "ON".

Measure voltage between low signal terminal of CKPS harness connector and chassis ground.

Measure voltage between high signal terminal of CKPS harness connector and chassis ground.

Is the measured voltage within specification ?

	▶ Go to "Check Short in signal circuit" procedure.
	▶ Go to "Check Short to ground in signal circuit" procedure.

IG "OFF" and disconnect CKPS connector and ECM connector.

Measure the resistance between signal A, signal B terminal of CKPS harness connector and chassis ground.

Is the measured resistance within specification?

	▶ Repair Open in signal circuit and then, go to "Verification of Vehicle Repair" procedure.
	▶ Repair Short to ground in signal circuit and then, go to "Verification of Vehicle Repair" procedure.

IG "OFF" and disconnect CKPS connector.

Disconnect CKPS connector and ECM connector.

Measure the resistance between signal A, signal B terminal of CKPS harness connector.

Is the measured resistance within specification?

	▶ Go to "Component inspection" procedure.
	▶ Repair Short in signal circuit and then, go to "Verification of Vehicle Repair" procedure. .