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.
Has a problem been found?
YES
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
Go to "Power Circuit Inspection" procedure.
Ignition "OFF"
Disconnect EPS motor connector and EPS CM connector.
Measure resistance between terminal "2" of EPS motor harness connector and terminal "2" of EPS CM harness connector.
Specification : 0 Ω
Is the resistance measured within specifications?
YES
Go to "Control Circuit Inspection" procedure.
NO
Check for poor contact, open in control harness.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
Ignition "OFF"
Disconnect EPS motor connector and EPS CM connector.
Measure resistance between terminal "1"of EPS motor harness connector and terminal "1"of EPS CM harness connector.
Specification : Approx. 0Ω
Is the resistance measured within specifications?
YES
Check for poor contact.
→ If it is normal, go to "Component Inspection" procedure.
→ If it is abnormal, repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
Check for poor contact, open in control harness.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.