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?

YES

Repair as necessary and go to "Verification of Vehicle Repair" procedure.

NO

Go to " Control Circuit Inspection " procedure.

Ignition "OFF" & Engine "OFF".

Disconnect ECM connector.

Ignition "ON" & Engine "OFF".

Measure voltage between terminal 29 of ECM harness connector and chassis ground.

Specification : Approx. 10.8 ~ 13.0V

Is the measured voltage within specifications ?

YES

▶ Go to " Component Inspection " procedure.

NO

▶ Check for short to battery in control harness.

Repair as necessary and go to "Verification of Vehicle Repair" procedure .