IG "OFF".
IG "ON".
Connect GDS and select "Diagnostic Trouble Codes(DTCs)" mode.
Using a GDS, Clear DTC.
Select "Diagnostic Trouble Codes(DTCs)" mode again.
Are any DTCs present?
![]() | ▶ Substitute with a known-good PCM(ECM) and check for proper operation. If problem is corrected, replace PCM(ECM) and then go to "Verification of Vehicle Repair" procedure. |
![]() | ▶ Fault is intermittent caused by faulty HECU or PCM(ECM), or was repaired and HECU memory was not cleared. Go to "Verification of Vehicle Repair" procedure. |