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?
![]() | ▶ 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. |
![]() | ▶ 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. |