W/Harness Inspection

Motor Driven Power Steering
C1656 CAN signal error Cluster - 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 ?






CAN communcation line inspection

1. Connect HCU, PCM, MCU, BMS, A A F, FATC connector
2. IG KEY "ON"
3. Measure voltage between CAN high terminal(# 3) of diagnostic connector and chassis ground.
4. Measure voltage between CAN low terminal(#11) of diagnostic connector and chassis ground.




5. Is the measured resistance within specifications?






CAN Circuit Inspection (EPS <--> CLU)

1. Ignition "On"
2. Disconnect EPS CM and TCU(PCM).
3. Measure resistnace between CAN High of ESP CM and CLU.
4. Measure resistnace between CAN Low of ESP CM and CLU.




5. Is the measured value within specification ?






CAN register and communication line inspection

CAN register and communication line inspection
1. IG key "OFF".
2. EPS, CLU,.connector.
3. Measure registance between terminal 3 and 11 of diagnostic connector.

Specification :About 120 Ohms




4. Is the measured resistance within specifications?