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Home >> Suzuki >> 2001 >> Vitara JS, 4D Utility, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0500: Vehicle Speed Sensor (VSS) Malfunction >> Diagnosis & Repair Procedure
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Diagnosis & Repair Procedure

  1. Perform DTC CONFIRMATION TEST . If DTC P0500 is set, go to next step. If DTC P0500 is not set, problem is intermittent. System is okay at this time. See TROUBLE SHOOTING - NO CODES article.
  2. Check speedometer operation. If speedometer does not function properly and does not indicate actual vehicle speed, go to step  4. If speedometer functions properly and indicates actual vehicle speed, turn ignition off and check for open in Blue/Yellow wire between VSS and PCM 30-pin connector C51-2 terminal No. 25. See WIRING DIAGRAMS article. Repair as necessary and go to DTC CONFIRMATION TEST . If wire is okay, go to next step.
  3. Disconnect PCM 30-pin connector C51-2. Check for poor terminal contact at PCM 30-pin connector C51-2. If poor terminal contact is found, repair as necessary and go to DTC CONFIRMATION TEST . If terminal contact is okay, problem is intermittent. System is okay at this time. See TROUBLE SHOOTING - NO CODES article. If intermittent problem is not found, replace PCM and go to DTC CONFIRMATION TEST .
  4. Turn ignition off. Disconnect VSS connector. VSS is located in transmission extension case (2WD models) or transfer case (4WD models). Turn ignition on and measure voltage between VSS harness connector terminals No. 2 (Black/Yellow wire) and No. 3 (Blue/Black wire). If reading is 10-14 volts, go to next step. If reading is not 10-14 volts, check for open or short in Blue/Black wire between VSS and main relay. Also check for open or short in Black/Yellow wire between VSS and ground. See WIRING DIAGRAMS article. Repair as necessary and go to DTC CONFIRMATION TEST .
  5. With ignition on, measure voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If reading is 4 volts or more, go to next step. If reading is less than 4 volts, go to step  7.
  6. Remove VSS from transfer case (4WD models) or extension case of transmission (2WD models). Check VSS drive and driven gears for damage or excessive wear. Repair or replace as necessary. If no problems were found, check for poor terminal contact at VSS connector. If poor terminal contact is found, repair as necessary and go to DTC CONFIRMATION TEST . If terminal contact is okay, replace VSS go to DTC CONFIRMATION TEST .
  7. Turn ignition off. Remove instrument cluster and disconnect instrument cluster 16-pin connector G11. Turn ignition on. Measure voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If reading is 4 volts or more, replace instrument cluster and go to DTC CONFIRMATION TEST . If reading is less than 4 volts, go to next step.
  8. If vehicle is not equipped with cruise control, go to next step. If vehicle is equipped with cruise control, turn ignition off. Disconnect cruise control module connector. Turn ignition on. Measure voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If reading is 4 volts or more, replace cruise control module and go to DTC CONFIRMATION TEST . If reading is less than 4 volts, go to next step.
  9. Check for short or open in Blue/Yellow wire between VSS, PCM 30-pin connector C51-2, speedometer and cruise control module (if equipped). See WIRING DIAGRAMS article. Repair as necessary. If wire is okay, replace PCM and go to DTC CONFIRMATION TEST .
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