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EPS Warning Light Circuit: Procedure

  1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) 
    1. Check for DTCs.

      OK

      DTC is not output.

    NG → See step   4 

    OK: Go to next step 

  2. CHECK FOR DTC (POWER STEERING SYSTEM) 
    1. Refer to DTC CHECK / CLEAR .

      Result

      Result Proceed to
      DTC is not output. A
      DTC C1551 or C1552 is output. B

    B → See step   5 

    A: Go to next step 

  3. CHECK COMBINATION METER ASSEMBLY 
    1. Check the combination meter assembly condition.
      1. Turn the ignition switch to ON.
      2. Check that the P/S warning light comes on for 3 seconds after the ignition switch is turned to ON.

        OK

        The combination meter assembly operates normally.

    NG → See step   4 

    OK → See step   6 

  4. GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING 
  5. REPAIR CIRCUITS INDICATED BY OUTPUT DTCS. Refer to  DIAGNOSTIC TROUBLE CODE CHART 
  6. REPLACE POWER STEERING ECU. Refer to  REMOVAL