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Home >> Suzuki >> 2001 >> Grand Vitara JLS, Standard >> 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 indicate vehicle speed, go to next step. If speedometer indicates vehicle speed, check for short or open in Blue/Yellow wire between VSS and PCM 26-pin connector C51-3 terminal No. 1. See WIRING DIAGRAMS article. Repair as necessary and go to DTC CONFIRMATION TEST . If wire is okay, go to next step.
  3. Disconnect PCM 26-pin connector C51-3 . Check for poor terminal contact at PCM 26-pin connector C51-3. 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. Measure voltage between VSS harness connector terminals No. 2 (Black/Yellow wire) and No. 3 (Blue/Black wire). If 10-14 volts exist, go to next step. If 10-14 volts do not exist, check open in Black/Yellow wire between VSS and ground. Also check for short or open in Blue/Black wire between VSS and main relay. See WIRING DIAGRAMS article. Repair as necessary and go to DTC CONFIRMATION TEST .
  5. Measure voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If 4 volts or more exist, go to next step. If less than 4 volts exist, and go to step  7.
  6. Remove VSS. Check VSS drive and driven gears for damage or excessive wear. Repair or replace as needed. 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 and go to DTC CONFIRMATION TEST .
  7. Turn ignition off. Remove instrument cluster. Disconnect 16-pin connector from instrument cluster. Turn ignition on. Measure voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If less than 4 volts exist and vehicle is equipped with cruise control, go to next step. If less than 4 volts exist and vehicle is not equipped with cruise control, replace PCM and go to DTC CONFIRMATION TEST . If 4 volts or more exist, replace speedometer. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Go to DTC CONFIRMATION TEST .
  8. Turn ignition off. Disconnect 12-pin cruise control module connector, located in engine compartment on left fenderwell. Turn ignition on. Measure voltage between VSS harness connector terminals No. 1 (Blue/Yellow wire) and No. 2 (Black/Yellow wire). If less than 4 volts exist, go to next step. If 4 volts or more exist, replace cruise control module. See appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT. Go to DTC CONFIRMATION TEST .
  9. Check for open or short in Blue/Yellow wire between VSS, PCM, instrument cluster and cruise control module (if equipped). Repair as necessary and go to DTC CONFIRMATION TEST . If wire is okay, replace PCM and go to DTC CONFIRMATION TEST .
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