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Home >> Chevrolet >> 2000 >> Tracker 4D Utility, RWD, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Self-Diagnostics >> Diagnostic Tests >> DTC P0500: Vehicle Speed Sensor Circuit >> Diagnostic Procedures
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Diagnostic Procedures

  1. Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD system check, go to next step.
  2. Install a scan tool. Raise support vehicle drive axles. Start engine. Place transmission in 1st gear. Observe scan tool. If scan tool display indicates vehicle speed at greater than zero MPH, go to next step. If scan tool does not indicate vehicle speed at greater than zero MPH, go to step  4.
  3. Lower vehicle. Using scan tool, clear DTCs. Operate vehicle within conditions for setting DTC. Recheck for DTCs. If this DTC resets, go to next step. If this DTC does not reset, see DIAGNOSTIC AIDS .
  4. If speedometer indicates a vehicle speed, go to step  11. If speedometer does not indicate a vehicle speed, go to next step.
  5. Turn ignition off. Disconnect VSS electrical connector. Turn ignition on, with engine off. Using a DVOM, check voltage at VSS harness connector terminal No. 3 (ignition positive voltage circuit). If voltage reading is about 12 volts, go to next step. If voltage reading is not about 12 volts, go to step  8.
  6. Using a test light connected to battery voltage, probe VSS harness connector terminal No. 2 (ground circuit). If test light illuminates, go to next step. If test light does not illuminate, go to step  13.
  7. Turn ignition off. Disconnect PCM harness connector. Turn ignition on, with engine off. Check voltage at PCM harness connector terminal No. 25 (VSS signal circuit). If voltage reading is 5 volts, go to step  9. If voltage reading is not 5 volts, go to step  15.
  8. Repair open circuit between VSS and PCM harness connectors. After repairs, go to step  16.
  9. Check for open in VSS signal circuit between VSS and PCM harness connectors. Repair as necessary. After repairs, go to step  16. If circuit is okay, go to next step.
  10. Check VSS signal circuit for short to ground, short between PCM and VSS, short between cruise control module and splice connector between VSS and PCM, or short between instrument cluster and splice to cruise control servo. Repair as necessary. After repairs, go to step  16. If circuits are okay, go to step  12.
  11. Check for open in VSS signal circuit between PCM and splice to VSS. Repair as necessary. After repairs, go to go to step  16. If circuit is okay, go to step  15.
  12. Check transmission for a fault that is preventing the VSS hall switch circuit from receiving signal. Repair transmission as necessary. After repairs, go to step  16. If transmission is okay, go to step  14.
  13. Repair faulty ground connection or open in VSS ground circuit. After repairs, go to step  16.
  14. Replace VSS. After replacing sensor, go to step  16.
  15. Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
  16. After repairs, clear DTCs. Road test vehicle and observe vehicle speed parameter on scan tool. If vehicle speed is indicated, go to next step. If vehicle speed is not indicated, go to step  5.
  17. Check for any DTCs displayed on scan tool. If DTC(s) are displayed, diagnose affected DTC(s). If no DTC(s) are displayed, system is okay.
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