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Home >> Saturn >> 1996 >> SC2 Automatic, MP6 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Trouble Codes >> DTC P0500 - Vehicle Speed Sensor Circuit >> Diagnostic Procedures
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Diagnostic Procedures

  1. Install scan tool. Raise and support drive wheels. Start engine. Rotate drive wheels at greater than 3 MPH. If scan tool reads a speed, problem is intermittent. See DIAGNOSTIC AIDS. If scan tool does not read a speed, go to next step.
  2. Turn engine off. Disconnect PCM harness connector J3. Using a DVOM, check resistance between VSS harness connector terminals at PCM. Resistance should be between 800-1600 ohms. If resistance is as specified, go to next step. If resistance is not as specified, go to step 4).
  3. Check VSS tightness. Tighten to 20 ft. lbs. (26 N.m) and retest. If sensor is tight, check for terminal tightness or faulty PCM.
  4. Disconnect VSS harness connector. Check resistance between sensor terminals. Resistance should be 800-1600 ohms. If resistance is not as specified, replace faulty VSS. If resistance is as specified, check for open or short in circuits between VSS and PCM.
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