Monitor Scan Tool Data
- Connect scan tool to Data Link Connector (DLC).
- Ignition "ON" & Engine "OFF".
- Press the ESC SWITCH.
- Monitor the "TCS/ESC SWITCH" parameter on the scan tool.
- Whenever the switch is pushed up/down, is the ESC off switch's scan tool data changed ON/OFF?
YES
- Fault is intermittent caused by poor connection in ESC switch line or was repaired and HECU memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to next procedure.