2.
Measure voltage between terminal 1 of the injector harness connector and chassis ground.
Specification : Approx. B+
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?
YES
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
▶ Go to "Power Supply Circuit Inspection" procedure.
Ignition "ON" & Engine "OFF"
Measure voltage between terminal 1 of the injector harness connector and chassis ground.
Specification : Approx. B+
Is voltage within the specification?
YES
▶ Go to "Control Circuit Inspection" procedure.
NO
▶ Check for a open in the power supply circuit between the main relay and the Injector.
Check for open or blown 15A injector fuse.
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Check for short to battery in control circuit.
Ignition "OFF".
Disconnect ECM connectors.
Ignition "ON" & Engine "OFF".
Measure voltage between terminal 2 of the injector harness connector and chassis ground.
Specification : Approx. 0V
Is voltage within the specification?
YES
▶ Go to next step as below
NO
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Check for open in control circuit.
Ignition "OFF".
Measure resistance between terminals 2 of the injector harness connector and 34 of the ECM harness connector.
Specification : Approx. 0Ω
Is resistance within the specification?
YES
▶ Check for poor connection between ECM and component: backed out terminal, improper mating, broken locks or poor terminal to wire connection. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
NO
▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure.
