Component Inspection
- IG "OFF"
- IG "ON" & Engine "OFF"
- After connecting scantool, Check DTC.
- Using scantool, Clear DTC.
- Again using scantool, Check DTC present.
- 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
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.
- 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.