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 of vehicle Repair" procedure.
	▶ Go to "Signal Circuit Inspection" procedure.

IG "OFF" & Disconnect Alternator connector.

IG "ON".

Measure voltage between Pin No.1(COM) terminal of Alternator harness connector and chassis ground.

Measure voltage between Pin No.3(FR) terminal of Alternator harness connector and chassis ground.

IG "OFF" & Disconnect PCM connector.

Measure resistance between Pin No. 3(FR) terminal of Alternator harness connector and B+.

Is the measured Value within specification?

	▶ Go to "Component Inspection" procedure.
	▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedue.