4.
Monitor the "ESP OFF SWITCH" parameter on the scantool.
Connect scantool to Data Link Connector(DLC).
Ignition "ON" & Engine "OFF".
Press the ESP SWITCH.
Monitor the "ESP OFF SWITCH" parameter on the scantool.
Whenever the switch is pushed up/down, is the ESP off switch’s scantool data changed ON/OFF?
YES
Fault is intermittent caused by poor connection in ESP 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 "Terminal and Connector Inspection" procedure.
