Component Inspection
- Ignition "OFF".
- Ignition "ON" & Engine "OFF".
- Connect scantool and select "Diagnostic Trouble Codes (DTCs)" mode
- Using a scantool, Clear DTC.
- Operate the vehicle within DTC Detecting Condition in General Information. (Start and drive vehicle in gear and maintain vehicle speed at or above 40km/h. (24.9mph)
- Select "Diagnostic Trouble Codes (DTCs)" mode again.
- Are any DTCs present ?
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.
NO
- Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared, go to" VERIFICATION OF VEHICLE REPAIR " procedure.