W/Harness Inspection

Terminal and connection 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?






Power Circuit Inspection

Check for Short to Ground in Power Circuit
1. IG KEY OFF.
2. Disconnect PCM and APS harness connector.
3. IG KEY ON.
4. Measure resistance between APS1 power terminal of APS harness connector and chassis ground.

Specification : Infinite





5. Is resistance within specification?





Check for Open in Power circuit
1. IG KEY OFF.
2. Disconnect APS harness connector.
3. IG KEY ON.
4. Measure voltage between APS1 power terminal of APS harness connector and chassis ground.

Specification : Approx. 5V





5. Is voltage within specification?






Signal Circuit Inspection

Check for Short to Ground in Signal Circuit
1. IG KEY OFF.
2. Disconnect PCM and APS harness connector.
3. IG KEY ON.
4. Measure resistance between APS1 signal terminal of APS harness connector and chassis ground.

Specification : Infinite





5. Is resistance within specification?





Check for Open in Signal circuit
1. IG KEY OFF.
2. Disconnect APS harness connector and PCM harness connector.
3. Measure resistance between both ends of APS1 signal line.

Specification : Below 1 Ohm.





4. Is resistance within specification?