IG OFF.

Backprope both terminals of the injector connector.

Engine RUNNING.

Measure the signal waveform of the injector.

IG OFF.

Disconnect the injector and PCM connectors.

Measure the resistance between the Lowside terminal of Injector harness connector and chassis ground.

Is the measured resistance within specifications?

	▶ Go to "Check for Open in Control harness".
	▶ Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

IG OFF.

Disconnect the injector and PCM connectors.

Measure the resistance between both ends of the Lowside control harness.

Is the measured resistance within specifications?

	▶ Go to "Termianl and Connector Inspection".
	▶ Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

Many malfunctions in the electrical system are caused by poor harness(es) 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 "Component Inspection".