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Code P0500: Vehicle Speed Sensor Fault

NOTE: For component terminal identification, see TERMINAL IDENTIFICATION  in this article. For appropriate WIRING DIAGRAMS, see WIRING DIAGRAMS  section.
  1. If speedometer is inoperative or erratic, go to step  3 . If speedometer operates normally, disconnect PCM connector. Turn ignition on. Measure voltage between PCM connector terminal No. 86 (Yellow/White wire) and ground. Voltage should alternate between zero and 5 volts as drive wheels are turned.
  2. If voltage is as specified, check PCM connector. If PCM connector is okay, replace PCM. If voltage is not as specified, check wiring harness between PCM and vehicle speed sensor connector.
  3. Disconnect instrument panel connectors. Turn ignition on. Measure voltage between connector C5 terminal No. 36 (Yellow/White wire) and ground, while turning drive wheels. If voltage is 4.7 volts or more, go to next step. If voltage is not 4.7 volts or more, go to step  5 .
  4. Measure voltage between connector C6 terminal No. 10 (Black/White wire) and ground. If battery voltage exists, replace instrument panel cluster. If battery voltage does not exist, check junction connectors and wiring harness between power supply and instrument panel cluster.
  5. Remove Vehicle Speed Sensor (VSS). Connect 12-volt power source between VSS terminals No. 1 and 2. Connect positive lead to terminal No. 1. Connect a 3-10 k/ohm resistor between positive lead and terminal No. 3. Using analog voltmeter, check voltage between terminal No. 2 an 3 while turning VSS shaft. Meter should pulse 4 times per revolution. If VSS is okay, go to next step.
  6. Turn ignition on. Measure voltage between VSS connector terminal No. 3 (Yellow wire) and ground. If voltage is 4.5 volts or more, go to next step. If voltage is not 4.5 volts or more, check wiring harness between VSS and instrument panel cluster.
  7. Check continuity between VSS connector terminal No. 2 (Black wire) and ground. If continuity exists, go to next step. If continuity does not exist, check wiring harness between VSS and ground.
  8. Measure voltage between VSS connector terminal No. 1 (Black/White wire) and ground. If battery voltage does not exist, check junction connector and wiring harness between VSS and power supply.
  9. Turn ignition on. Measure voltage between VSS connector terminal No. 3 (Yellow/White wire) and ground. If voltage is 4.5 volts or more, go to next step. If voltage is not 4.5 volts or more, check junction connector and wiring harness between VSS and instrument panel cluster.
  10. Measure voltage between VSS connector terminal No. 1 (Yellow wire) and ground. If about 8 volts exist, check PCM connector, junction connector A82 and wiring harness between VSS and PCM. If about 8 volts do not exist, check PCM connector, junction connector A83 and wiring harness between VSS and PCM.
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