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Home >> Kia >> 2001 >> Sephia Base, Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - Fa4AEL >> Diagnostic Tests >> DTC P1500: VSS Signal Malfunction >> Diagnostic Procedure

Diagnostic Procedure

  1. Ensure all appropriate connections are clean and tight. Repair as needed. If connections are okay, go to next step.
  2. Turn ignition switch to ON position. Access TCM connector. DO NOT disconnect connector. Using DVOM, measure voltage by backprobing between TCM harness connector terminal No. 42 and ground. See Figure. Battery voltage should be present with vehicle stopped. Road test vehicle so that VSS is operated. Voltage should fluctuate from zero volts to battery voltage while driving. If voltage is as specified, go to step  4. If voltage is not as specified, go to next step.
  3. Check wiring between TCM, ECM and speedometer. See WIRING DIAGRAMS . Repair as needed. If wiring is okay, go to next step.
  4. Reconnect all harness connectors. Clear DTC. Road test vehicle. Retrieve DTC. If DTC P1500 is still present, replace TCM. See TRANSAXLE CONTROL MODULE  under REMOVAL & INSTALLATION. If DTC P1500 is no longer present, malfunction is repaired.
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