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 "Signal circuit inspection" procedure.

Ignition "ON" & Engine "OFF".

Disconnect the "OUTPUT SPEED SENSOR" connector.

Measure voltage between "Signal" terminal of the OUTPUT SPEED SENSOR harness connector and chassis ground.

Is voltage within specifications ?

	▶ Go to "Power circuit Inspection" procedure.
	▶ Check for open or short in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure. ▶ If signal circuit in harness is OK, Go to "Check PCM/TCM" of the "Component Inspection" procedure.

Ignition "ON" & Engine "OFF".

Disconnect the "OUTPUT SPEED SENSOR" connector.

Measure voltage between "Power supply" terminal of the OUTPUT SPEED SENSOR harness connector and chassis ground.

Is voltage within specifications ?

	▶ Go to "Ground circuit inspection" procedure.
	▶ Check for open in harness. Repair as necessary and Go to "Verification Vehicle Repair" procedure.

Ignition "ON" & Engine "OFF".

Disconnect the "OUTPUT SPEED SENSOR" connector.

Measure resistance between "Sensor ground " terminal of the OUTPUT SPEED SENSOR harness connector and chassis ground.

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 ground circuit in harness is OK, Go to "Check PCM/TCM" of the "Component Inspection" procedure.