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 HECU and check for proper operation. If problem is corrected, replace HECU and then go to "Verification of Vehicle Repair" procedure. note ※ In a case of replacing HECU, operate following functions 1) "HAC Enable/Disable" for HAC set. - ESP only 2) "Longituginal Sensor Calibration" for Longituginal sensor offset correction (refer to C1285) - ESP only ※ Above function should be preformed in order of precedence [1)→2)] |
![]() | ▶ Fault is intermittent caused by faulty HECU or was repaired and HECU memory was not cleared. go to "Verification of Vehicle Repair" procedure. |