EPS Symptom Troubleshooting Index
When the vehicle has one of these symptoms, check for a diagnostic trouble code (DTC) with the HDS. If there is no DTC, do the diagnostic procedure for the symptom, in the sequence listed, until you find the cause.

Symptom
Diagnostic Procedure
Also check for
HDS does not communicate with the EPS control unit or the vehicle
Troubleshoot the DLC circuit.
  
EPS indicator does not come on
Symptom Troubleshooting.
  
EPS indicator does not go off, and no DTCs are stored
  
Steering pull
Symptom Troubleshooting.
  
EPS indicator is not on, no DTCs are stored, but there is no power assist or power assist is reduced
-1.
Check the EPS motor power wires between the EPS control unit and the EPS motor for a short to body ground. Repair as needed.
-2.
L4 engine: Replace the EPS motor (short in the EPS motor).
-3.
V6 engine: If the EPS motor power wires are OK, replace the steering gearbox (short in the EPS motor).
-4.
Check the power and body ground connections at the EPS control unit.