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Home >> Suzuki >> 2006 >> XL-7 Base, 4WD, Standard >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine General Information And Diagnosis >> Diagnostic Information and Procedures >> DTC P0500: Vehicle Speed Sensor >> DTC Troubleshooting
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DTC Troubleshooting

DTC DIAGNOSTIC TROUBLESHOOTING CHART

Step Action YES NO
1  Was "Engine and Emission Control System Check" performed?  Go to Step 2. Go to ENGINE AND EMISSION CONTROL SYSTEM CHECK .
2  Does speedometer indicate vehicle speed?  Faulty "BLU/YEL" wire or poor "C51-1-14" terminal connection. If wire and connection are OK, intermittent trouble or faulty ECM.
Check for intermittent referring to INTERMITTENT AND POOR CONNECTION INSPECTION .		 Go to Step 3.
3  VSS power supply voltage check 
  1. With ignition switch turned OFF, disconnect VSS coupler (1).
  2. With ignition switch turned ON leaving engine stopped, measure voltage between "BLU/BLK" wire terminal (3) and "BLK/YEL" wire terminal (2) of VSS coupler.
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Is voltage 10 - 14 V? 		 Go to Step 4. "BLK/BLU" or "BLK/YEL" wire is open/short.
4  VSS signal harness check 
  1. With ignition switch turned ON leaving engine stopped, measure voltage between "BLU/YEL" wire terminal (1) and "BLK/YEL" wire terminal (2) of VSS coupler (3).
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Is voltage 4 V or more? 		 Go to Step 5. Go to Step 6.
5  Speedometer circuit check 
  1. With ignition switch turned OFF, disconnect couplers from combination meter.
  2. With ignition switch turned ON leaving engine stopped, measure voltage between "BLU/YEL" wire terminal (1) and "BLK/YEL" wire terminal (2) of VSS coupler (3).
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Is voltage 4 V or more? 		 Substitute a known-good combination meter and recheck. Go to Step 6.
6  Cruise control module circuit check (if equipped) 
  1. With ignition switch turned OFF, disconnect cruse control module coupler from cruise control module.
  2. With ignition switch turned ON leaving engine stopped, measure voltage between "BLU/YEL" wire terminal (1) and "BLK/YEL" wire terminal (2) of VSS coupler (3).
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Is voltage 4 V or more? 		 Substitute a known-good cruise control module and recheck. Go to Step 7.
7  VSS signal harness check 
  1. With ignition switch turned OFF, disconnect ECM connectors.
  2. Check for proper connection "C51-1-14" terminal of ECM connector.
  3. With ignition switch turned ON leaving engine stopped, measure voltage between "C51-1-14" terminal of ECM connector and vehicle body ground.

Is voltage 0 V? 		 Go to Step 8. "BLU/YEL" circuit shorted to power supply line.
8  VSS signal harness check 
  1. With ignition switch turned OFF, measure resistance between "C51-1-14" terminal of ECM connector and vehicle body ground.

Is resistance infinity? 		 Go to Step 9. "BLU/YEL" circuit shorted to ground. If wire is OK, substitute a known-good ECM and recheck.
9  VSS visual inspection 
  1. Remove VSS (1) referring to VEHICLE SPEED SENSOR (VSS) REMOVAL AND INSTALLATION .
  2. Check VSS drive gear (3) and driven gear (2) for damage and excessive wear.
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Are they in good condition? 		 Poor VSS connection or VSS malfunction. If connection is OK, substitute a known-good VSS and recheck. Replace VSS.
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