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Home >> Hyundai >> 2000 >> Accent GS, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0501: Vehicle Speed Sensor (VSS) Malfunction >> Test Procedures

Test Procedures

  1. Turn ignition on. Connect scan tool to data link connector and verify DTC P0501 is set. Test drive vehicle and ensure speedometer operates properly. If speedometer operates properly, go to next step. If speedometer does not operate properly, repair speedometer cable and/or cable drive gear. When repairs are completed, clear DTC and verify VSS operation.
  2. Turn ignition on and observe instrument cluster indicators. If all instrument cluster indicators operate properly, go to next step. If instrument cluster indicators do not operate properly, repair Black wire ground circuit between ground connection located behind left front kick panel and instrument cluster M71-1, 10-pin connector terminal No. 6 and M71-3, 14-pin connector terminal No. 2. When repairs are completed, clear DTC and verify VSS operation.
  3. Turn ignition off. Disconnect instrument cluster M71-3, 14-pin connector. Measure resistance between ground and instrument cluster M71-3 connector terminals No. 6 (Blue/Black wire) and No. 8 (White/Black wire). If resistance is more than 50 ohms, go to next step. If resistance is less than 50 ohms, repair short to another circuit or ground in suspect circuit between instrument cluster and ECM connector terminal No. 59 (Blue/Black wire). When repairs are completed, clear DTC and verify system VSS operation.
  4. Turn ignition off. Disconnect instrument cluster M71-3, 14-pin connector and M71-1, 10-pin connector. Using a jumper wire, connect ECM connector terminal No. 59 (Blue/Black wire) to ground. Measure resistance between ground and M71-3, 14-pin connector terminals No. 6 (Blue/Black wire) and No. 8 (White/Black wire). If resistance is one ohm or less, go to next step. If resistance is more than one ohm, repair open in suspect circuit between instrument cluster and ECM. When repairs are completed, clear DTC and verify VSS system operation.
  5. Ensure instrument cluster connectors are disconnected. Rotate speedometer cable and check for toggling continuity between instrument cluster M71-3 connector terminal No. 2 (Black wire) and M71-3 connector terminals No. 6 (Blue/Black wire) and No. 8 (White/Black wire). Continuity should toggle on and off 4 times for every speedometer cable rotation. If continuity toggles as specified, verify ECM connector terminals are clean and tight. If ECM connector is okay, replace VSS with a known-good component. Clear DTC and verify system operation. If problem persists, replace ECM. If continuity does not toggle as specified, replace VSS. When repairs are completed, clear DTC and verify system operation.
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