W/Harness Inspection

Engine Control

P0119 Engine Coolant Temperature Circuit Intermittent - 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 short to ground in harness
1. IG "OFF" and disconnect ECTS connector.
2. IG "ON"
3. Measure voltage between signal terminal of ECTS harness connector and chassis ground.

Specification : Approx. 3.3 V




4. Is the measured voltage within specification?