Component Inspection

Ignition "OFF".
Disconnect ESC switch connector.
Press the ESC switch.
Measure resistance between terminal "2" of the ESC switch harness connector and terminal "5" of the ESC switch harness connector.
Specification: Approx below 1 Ω

Fig 1: Measuring Resistance Between ESC Switch Connector Terminals
Courtesy of HYUNDAI MOTOR CO.

Is the measured resistance within specifications?

YES
- Fault is intermittent caused by faulty ESC switch or was repaired and HECU memory was not cleared. Go to the STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING .
NO
- Substitute with a known-good ESC switch and check for proper operation. If problem is corrected, replace ESC switch and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.