W/Harness Inspection

Power Supply Circuit Inspection

1. Ignition "ON" & Engine "OFF"
2. Measure voltage between terminal 1 of the injector harness connector and chassis ground
A. Specification : Approx. B+




3. Is voltage within the specification ?
YES
1) Go to "Control Circuit Inspection" procedure
NO
1) Check for a open in the power supply circuit between the main relay and the Injector.
Check for open or blown 10 A injector fuse
Repair as necessary and go to "Verification of Vehicle Repair" procedure

Control Circuit Inspection

1. Measure voltage between terminal 2 of the injector harness connector and chassis ground
A. Specification : Approx. 4 - 5V




2. Is voltage within the specification ?
YES
1) Go to next step as below
NO
1) Check control circuit for open or short. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Terminal and Connector Inspection

1. 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.
2. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3. Has a problem been found ?
YES
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure
NO
1) 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