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Home >> Kia >> 2009 >> Sorento Base, A5SR2 >> Repair and Diagnosis >> Brakes >> Traction Control >> Esp (Electronic Stability Program) >> DTC Troubleshooting >> DTC C1503: ESC Switch Error >> Component Inspection

Component Inspection

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

    Specification:

    Approx. below 1 Ω - ESC switch is depressed.

    Approx. ∞ Ω - ESC switch is not depressed.

    Fig 1: Measuring Resistance Between Terminal "3, 4" Of ESC Switch Component Connector
    G06412713Courtesy of KIA MOTORS AMERICA, INC.
  5. 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.
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