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

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 vehicle Repair" procedure.
	▶ Go to "Power circuit inspection" procedure.

Disconnect "INHIBITOR SWITCH" connector.

Ignition "ON" & Engine "OFF".

Disconnect "INHIBITOR SWITCH" connector.

Measure voltage between "Power supply" teminal of the sensor harness connector and chassis ground.

Is voltage within specifications?

	▶ Go to "Signal circuit inspection" procedure.
	▶ Check that Fuse-15A is installed or not blown. Check for open in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure.

Ignition "OFF".

Disconnect "INHIBITOR SWITCH" and "TCM" connector.

Measure resistance between each teminal of the sensor harness connector and TCM harness connector as below.

Is resistance within specifications?

	▶ Go to "Component inspection" procedure.
	▶ Check for Open in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure. If harness is not problem, then Substitute with a known-good TCM and check for proper operation. If the problem is corrected, replace TCM and then go to "Verification of Vehicle Repair" procedure.