W/Harness Inspection

Engine Control
P0117 Engine Coolant Temperature Circuit Low Input - Inspection/Repair:_:W/Harness Inspection

Terminal & 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 signal circuit
1. IG KEY "OFF".
2. Disconnect ECTS connector.
3. IG KEY "ON" & ENG "OFF".
4. Measure voltage between signal terminal of ECTS harness connector and chassis ground.

Specification :Signal terminal Approx. 5V




5. Is the measured voltage within specification ?