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Home >> Kia >> 2003 >> Sorento EX, 4WD, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0510: Idle Switch Circuit Malfunction >> Test Procedure

Test Procedure

  1. Turn ignition off. Connect Hi-Scan Pro/Kia Data Pro Scan tool or equivalent to OBD-II Data Link Connector. See Figure . Turn ignition on. Monitor for other DTCs. If DTC P0120, P0122 or P0123 are set, do all repairs associated with those DTCs before continuing with this procedure. If no other DTCs are set, go to next step.
  2. Turn ignition off. Thoroughly check TP sensor for damage. Also check for loose, bent, corroded, contaminated, deteriorated or damaged TP sensor connectors terminals. If sensor and connectors terminals are okay, go to next step. If sensor and connectors terminals are faulty, repair or replace as necessary and go to step  4 .
  3. Disconnect Idle Switch-TP sensor 4-pin harness connector. See Figure . Turn ignition on. Measure voltage between Idle Switch-TP sensor connector terminal No. 2 (Green/Orange wire). Voltage should be approximately 5 volts. If voltage is as specified, temporarily install a known good TP sensor and check for proper operation. If problem is corrected, replace TP sensor and go to next step. If voltage is not as specified, repair open or short circuit as necessary and go to next step.
  4. After repair, return vehicle to original condition. Clear codes using Hi-Scan Pro/Kia Data Pro Scan tool or equivalent. Verify repairs by driving vehicle and monitoring for pending codes. If DTC is set during test drive, follow appropriate DTC test procedure.
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