W/Harness Inspection

Power Supply Circuit Inspection

1. Ignition "ON" & Engine "OFF".
2. Measure the voltage between terminal 30 of the main relay harness connector and chassis ground.
3. Measure the voltage between terminal 85 of the main relay harness connector and chassis ground.
A. Specification : Approx. B+




4. Is voltage within the specification?
YES
1) Go to next step as below
NO
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure.
5. Measure the voltage between terminal 87 of the main relay harness connector and chassis ground.
A. Specification : Approx. 1.5V




6. Is value within the specification?
YES
1) Go to next step as below
NO
1) Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Control Circuit Inspection

1. Ignition "OFF"
2. With ECM connector still disconnected, measure voltage between terminal 64 of the ECM harness connector and chassis ground
A. Specification : Approx. B+




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

Ignition Switch Circuit Inspection

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




3. Is voltage within the specification?
YES
1) Go to next step as below
NO
1) 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