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DTC P0500 - Vehicle Speed Sensor (VSS) Malfunction

NOTE: For terminal identification, see TERMINAL IDENTIFICATION in SELF-DIAGNOSTICS section. For circuit and wire color identification, see WIRING DIAGRAMS article.
  1. Disconnect Instrument Panel (I/P) connectors. Turn ignition on. While turning drive wheels, check voltage between ground and I/P connector C05 terminal No. 49. If voltage is 4.7 volts or more, go to next step. If voltage is not as specified, go to step 3).
  2. Check voltage between ground and I/P connector D02 terminal No. 24. 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.
  3. Remove 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 an analog voltmeter, check voltage between terminals No. 2 and 3 while turning VSS shaft. Meter should pulse 4 times per revolution. If VSS is okay, go to next step on turbo engine or step 7) on non-turbo engine.
  4. Turn ignition on. Check voltage between ground and VSS connector terminal No. 3. 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.
  5. Check continuity between ground and VSS connector terminal No. 2. If continuity exists, go to next step. If continuity does not exist, check wiring harness between ground and VSS.
  6. Check voltage between ground and VSS connector terminal No. 1. If battery voltage does not exist, check junction connector and wiring harness between VSS and power supply.
  7. Turn ignition on. Check voltage between ground and VSS connector terminal No. 3. 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.
  8. Check voltage between ground and VSS connector terminal No. 1. If approximately 8 volts exist, go to next step. If voltage is not as specified, check junction connector and wiring harness between VSS and power supply.
  9. Disconnect VSS connector. Turn ignition on. Check voltage between ground and VSS connector terminal No. 3. If voltage is 4.8-5.2 volts, go to next step. If voltage is not as specified, check connectors and wiring harness between VSS and PCM. If connectors and wiring harness are okay, replace PCM.
  10. Check continuity between ground and VSS connector terminal No. 2. If continuity exists, go to next step. If continuity does not exist, check connectors and wiring harness between PCM and VSS.
  11. Check PCM connector. Repair connector as necessary. If PCM connector is okay, check wiring harness between PCM and VSS. Repair as necessary. If wiring harness is okay, replace sensor. Clear DTCs. Road test vehicle to verify repairs. If DTC P0500 resets, replace PCM.
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