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 all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.

Has a problem been found?

	▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
	▶ Go to "Status LED Circuit Check" procedure.

Ignition "OFF".

Disconnect BSD LED switch connector.

Ignition "ON".

Measure a voltage between battery terminal and chassis ground about the BSD LED switch of connector.

Is the measured voltage within specification?

	▶ Go to next procedure.
	▶ Check for open or short in the BSD switch Check a voltage of power wiring circuit.

Ignition "OFF".

Disconnect BSD switch & BSD ECU(RH) connector.

Measure resistance between BSD LED signal terminal of BSD ECU harness connector and chassis ground.

Is the measured resistance within specifications?

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