W/Harness Inspection

Smart Key Unit
B1978 Electric Steering Column Lock Failure - 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 connectors for looseness, poor connection, bending, corrosion, contamination, deterioration,or damage.
3. Has a problem been found?






Check ESCL circuit

Check short to ground in ESCL circuit.
1. IG KEY OFF
2. Disconnect ESCL control Module, PDM and Smartkey Module connector.
3. Measure resistance between all the terminals of ESCL harness connector and chassis ground.

Specification :Infinite




4. Is the measured resistance within specification ?





Check short to battery in ESCL harness
1. IG KEY OFF.
2. Disconnect ESCL control Module, PDM and SMARTKEY Module connector.
3. Measure resistance between each terminal of ESCL control Module harness connector and chassis ground.

Specification :About 0V




4. Is the measured voltage within specification ?





Check open in ESCL harness
1. IG KEY OFF.
2. Disconnect ESCL control Module, PDM and Smartkey Module connector.
3. Measure resistance between one and the other terminal of ESCL control module harness connector or IPM harness connector.

Specification :About below 1Ohms




4. Is the measured resistance within specification ?