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?






Ground Circuit Inspection

Check for Open in Ground Circuit
1. IG KEY OFF.
2. Disconnect ETC connector and PCM connector.
3. Measure resistance between both ends of TPS ground line.

Specification : Below 1 Ohm.





4. Is resistance within specification?






Signal Circuit Inspection

Check for Short to Power in Signal Circuit
1. IG KEY OFF.
2. Disconnect ETC connector.
3. IG KEY ON.
4. Measure voltage between TPS1 signal terminal of ETC harness connector and chassis ground.

Specification : Approx. 4 V





5. Is voltage within specification?