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.
Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
![]() | ▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Go to "CAN communication circuit inspection" procedure. |
IG key "OFF".
Disconnect EPS CM connector and ENG(PCM) ECM connector.
Measure resistance between CAN-High terminal of the EPS CM harness connector and CAN-High terminal of the engine ECM harness connector.
Measure resistance between CAN-Low terminal of the EPS CM harness connector and CAN-Low terminal of the engine ECM harness connector.
Specification : below 1 Ω
Is the measured value within specification ?
![]() | ▶ Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage. ▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure |
![]() | ▶ Repair open or short circuit in the CAN communication line and then go to "Verification of Vehicle Repair" procedure. |