Ignition "OFF".
Ignition "ON"& Engine "OFF".
Connect scantool and select "Diagnostic Trouble Codes(DTCs)"mode
Using a scantool, Clear DTC.
Select "Diagnostic Trouble Codes(DTCs)"mode again.
Are any DTCs present ?
YES
Substitute with a known-good steering column & EPS unit assembly and check for proper operation. If the problem is corrected,replace steering column & EPS unit assembly and then go to "Verification of Vehicle Repair" procedure.
NO
Fault is intermittent caused by faulty EPS CM or was repaired and EPS CM memory was not cleared. Go to "Verification of Vehicle Repair"procedure.