Component Inspection
- Ignition "OFF".
- Ignition "ON" & Engine "OFF".
- Connect GDS and select "Diagnostic Trouble Codes (DTC) " mode.
- Using a GDS, Clear DTC.
- Select "Diagnostic Trouble Codes (DTC) " mode again.
- Are any DTCs present?
YES
- Substitute with a known-good PCM(ECM) and check for proper operation. If problem is corrected, replace PCM(ECM) and then go to "Verification Of Vehicle Repair " procedure.
If NG, replace steering column & EPS unit assembly and then go to "Verification Of Vehicle Repair " procedure.
NO
- Fault is intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and EPS CM memory is not cleared yet. Go to "Verification Of Vehicle Repair " procedure.
- Substitute with a known-good PCM(ECM) and check for proper operation. If problem is corrected, replace PCM(ECM) and then go to "Verification Of Vehicle Repair " procedure.