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 KEY "OFF".

Disconnect injector connector.

IG KEY "ON" & ENG "OFF"

Measure the voltage between both ends of the Highside control harness.

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

Is the measured voltage within specification ?

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