Component Inspection

Ignition "ON".
Disconnect ESC switch connector.
Press the ESC switch.
Measure resistance between terminal "3, 4" of the ESC switch component connector.
Specification :

Approx. below 1Ω - ESC switch is depressed.

Approx. ∞ Ω - ESC switch is not depressed.

Fig 1: Measuring Resistance Between ESC Switch Connector Terminals 3 & 4
Courtesy of KIA MOTORS AMERICA, INC.
Is the measured resistance within specifications?
YES
- Fault is intermittent caused by poor connection in ESC switch line or was repaired and HECU memory was not cleared. Go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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.