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Component Inspection

  1. IG "OFF"
  2. IG "ON" & Engine "OFF"
  3. After connecting GDS, Check DTC.
  4. Using GDS, Clear DTC.
  5. Again using GDS, Check DTC present.
  6. Is the same DTC shown, again?

    YES 

    Substitute with a known-good HECU and check for proper operation. If problem is corrected, replace HECU and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    In a case of replacing HECU, operate each sensor's calibration by scantool, including the steering angle sensor's calibration.

    NO 

    Fault is intermittent caused by poor connection in HECU's connector or was repaired and HECU memory was not cleared.

    Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

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