W/Harness Inspection

Terminal and Connector Inspection

1. Many malfunctions in the electrical system are caused by poor harness 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?






Signal Circuit Inspection

Check voltage
1. IG "OFF" and disconnect ETC Motor & TPS connector.
2. IG "ON".
3. Measure voltage between TPS2 signal terminal of ETC Motor & TPS harness connector and chassis ground.

Specification : Approx. 0V





4. Is the measured voltage within specification?





Check short to battery in harness
1. IG "OFF" and disconnect ETC Motor & TPS connector and ECM connector.
2. Measure resistance between TPS2 signal and TPS1 power terminals of ETC Motor & TPS harness connector. (Measurement "A")
3. Measure resistance between TPS2 signal and TPS2 power terminals of ETC Motor & TPS harness connector. (Measurement "A")
4. Measure resistance between TPS2 signal and ETC motor (+) terminals of ETC Motor & TPS harness connector. (Measurement "B")
5. Measure resistance between TPS2 signal and ETC motor (-) terminals of ETC Motor & TPS harness connector. (Measurement "B")

Specification : Infinite









6. Is the measured resistance within specification?






Ground Circuit Inspection

Check open in harness
1. IG "OFF" and disconnect ECTS connector and then IG "ON".
2. Measure voltage between TPS2 power terminal of ETC Motor & TPS harness connector and chassis ground. (Measurement "A")
3. Measure voltage between TPS2 power and TPS2 ground terminals of ETC Motor & TPS harness connector. (Measurement "B")

Specification : Voltage difference between measurement "A" and "B" is below 200mV.









4. Is the measured voltage within specification?