3.
Measure resistance between terminal 2 of injector harness connector and terminal 37 of ECM harness connector.
Specification : Approx. below 1Ω
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 " Power Circuit Inspection " procedure.
Ignition "OFF".
Disconnect injector and ECM connector.
Measure resistance between terminal 2 of injector harness connector and terminal 37 of ECM harness connector.
Specification : Approx. below 1Ω
Is the measured resistance within specifications ?
YES
▶ Go to "Control Circuit Inspection" procedure.
NO
▶ Check for open in the power harness.
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Check for short to ground in harness
Ignition "OFF".
Disconnect injector connector.
Ignition "ON" & Engine "OFF"
Measure resistance between terminal 1 of injector harness connector and chassis ground
Specification : Infinite
Is the measured resistance within specifications ?
YES
▶ Go to "Check for open in harness" as below
NO
▶ Check for short to ground in the control harness.
Repair as necessary and go to "Verification of Vehicle Repair" procedure.
Check for open in harness
Ignition "OFF".
Disconnect injector and ECM connector.
Measure resistance between terminal 1 of injector harness connector and terminal 40 of ECM harness connector.
Specification : Approx. below 1Ω
Is the measured resistance within specifications ?
YES
▶ Go to "Component Inspection" procedure
NO
▶ Check for open in the control harness.
Repair as necessary and go to "Verification of Vehicle Repair" procedure .
