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Home >> Toyota >> 1995 >> Tercel Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Diagnostic Testing >> Code P0500 - Vehicle Speed Sensor Malfunction >> Diagnosis & Repair
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Diagnosis & Repair

  1. Test drive vehicle and check operation of speedometer. If speedometer is not functioning correctly, see the INSTRUMENT PANEL article in the ACCESSORIES/SAFETY EQUIPMENT section. If speedometer is functioning correctly, go to next test.
  2. Access ECM behind glove box. Ensure ignition is off. Ensure shift lever is in neutral. Lift and support front of vehicle. Turn ignition on.
  3. Using DVOM, backprobe ECM connector. Measure voltage between terminal SPD and ground, while slowly rotating front wheel. See Figure. DVOM should indicate a pulse voltage from zero to 4.5-5.5 volts.
  4. If voltage is within specification, replace ECM and retest. If voltage is not within specification, inspect for possible open circuit between combination meter and ECM. See wiring diagram in the WIRING DIAGRAMS article. Repair as needed.
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