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 "Control Circuit Inspection" procedure.

IG "OFF" and disconnect injector connector.

IG "ON".

Measure voltage between injector control terminal of injector harness connector and chassis ground.

Is the measured voltage within specification ?

	▶ Go to "Component Inspection" procedure.
	▶ Go to "Check short to battery in harness" as follows.

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

Measure resistance between power and control terminals of injector harness connector.

Is the measured resistance within specification ?

	▶ Go to "Component Inspection" procedure.
	▶ Repair short to battery in harness, and go to "Verification of Vehicle Repair" procedure.