3.
Has a problem been found?
YES
a.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
a.
Go to "Power Circuit Inspection" procedure.
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 torque sensor connector and engine start.
Measure voltage between terminal "1" of torque sensor harness connector and chassis ground.
Specification : 8V ± 0.5V
Is the voltage measured within specifications?
YES
Check for short to ground in power harness.
→ If it is normal, go to "Ground Circuit Inspection" procedure.
→ If it is abnormal, repair as necessary and then go to "Verification of Vehicle Repair" procedure.
NO
Measure voltage between terminal "1" of M41-1(to EPS CM side) and chassis ground in above condition.
■ Specification : 8V ± 0.5V
→ If it is normal, check for short to ground in power harness.
→ If it is abnormal, substitute with a known-good EPS CM and check for proper operation.
If the problem is corrected, replace EPS EM and then go to "Verification of Vehicle Repair" procedure.
Ignition "OFF"
Disconnect torque sensor connector and EPS CM connector.
Measure resistance between terminal "5"of torque sensor harness connector and terminal "5"of EPS CM harness connector.
Specification : Approx. 0 Ω
Is the resistance measured within specifications?
YES
Go to "Component Inspection" procedure.
NO
Check for open in ground harness.
Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
