W/Harness Inspection

Power Supply Circuit Inspection

1. Ignition "OFF"
2. Disconnect multi-function switch connector
3. Ignition "ON" & Engine "OFF"
4. Measure voltage between terminal 6 of the multi-function switch harness connector and chassis ground
A. Specification: Approx. B+




5. Is voltage within the specification ?
YES
1) Go to "Ground Circuit Inspection"procedure
NO
1) Check for an open or short to ground in the power circuit. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Ground Circuit inspection

1. Ignition "OFF"
2. Reconnect multi-function switch harness connector
3. Disconnect ECM harness connector
4. Measure resistance between terminal 59 of the ECM harness connector and chassis ground
A. Specification: Approx. 0 Ohm




5. Is resistance within the specification ?
YES
1) Go to "Control Circuit Inspection"procedure
NO
1) Check for an open or short to ground in the power circuit. Repair as necessary and go to "Verification of Vehicle Repair" procedure.

Control Circuit Inspection

1. Ignition "ON"
2. Measure the voltage between terminal 58 of the ECM harness connector and chassis ground. "Refer to specification as below."
A. Specification









3. Is voltage within the specification ?
YES
1) Go to next step as below
NO
1) Possibility of control circuit or component malfunction. Check open or short in the control circuit. Repair as necessary and go to "Verification of Vehicle Repair" procedure.
If OK, go to next step as below.

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) Go to Component Inspection.