W/Harness Inspection

Ground circuit inspection

1. Ignition "OFF"
2. Disconnect ECTS connector
3. Measure the resistance between ground terminal of ECTS harness connector and chassis ground.

Specification : Approx. 0 Ohms





4. Is the resistance within the specification?






Signal Circuit Inspection

1. Check for short to battery in signal harness
(1) Disconnect PCM connector.
(2) Ignition "ON" & Engine "OFF"
(3) Measure the voltage between signal terminal of the sensor harness connector and chassis ground.

Specification : Approx. 0V





(4) Is voltage within the specification?





2. Check for open in signal harness
(1) Ignition "OFF"
(2) Measure the resistance between signal terminal of ECTS harness connector and signal connector of PCM harness connector.

Specification : Approx. 0 Ohms





(3) Is the resistance within the specification?






Terminal and Connector 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?