W/Harness Inspection

Motor driven Power Steering
C1604 EPS Module(pre-charge circuit) Malfunction - Inspection/Repair:_: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 all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
3. Has a problem been found?






Power Circuit Inspection

1. Ignition "OFF".
2. Connect Scantool to Data Link Connector(DLC) and start engine.
3. Select "SCOPEMETER FUNCTION"on scantool and accelerate engine.
4. Measure output signal between terminal EPS CM harness connector and chassis ground with switching (A/C,headlight etc.).

Specification :Surge always must not happen when turn IG key ON, OFF with turn the electricity device ON, OFF.








5. Is the resistance measured within specifications?






Ground Circuit Inspection

Check for open in ground harness
1. Ignition "OFF".
2. Disconnect EPS CM connector.
3. Measure resistance between ground terminal of the EPS CM harness connector and chassis ground.

Specification :Approx. 0 Ohms




4. Is the resistance measured within specifications?