P0500

DTC P0500: Vehicle Speed Sensor (VSS) Malfunction

Wiring Diagram










DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

WARNING:

- When performing a road test, select a place where there is no traffic or possibility of a traffic accident and be very careful during testing to avoid occurrence of an accident.
- Road test should be carried out with 2 persons, a driver and a tester.

NOTE:

Check to make sure that the following conditions are satisfied when using this DTC confirmation procedure.

- Intake air temp.: -14 °C, 6.8 °F or higher
- Altitude (barometric pressure): 2020 m, 6650 ft or less (540 mmHg, 72 kPa or more)

1) With ignition switch turned OFF, connect scan tool.
2) Turn ON ignition switch and clear DTC using scan tool.
3) Warm up engine to normal operating temperature.
4) Increase vehicle speed to 50 mph, 80 km/h.
5) Release accelerator pedal and with engine brake applied, keep vehicle coasting for 6 sec. or more (fuel cut condition for 2 sec. or more) and stop vehicle.
6) Check pending DTC and DTC.

DTC Troubleshooting

1.
Was "Engine System Check" performed?
YES
Go to Step 2.
NO
Go to Engine System Check Engine System Check.

2.
Does speedometer indicate vehicle speed?
YES
Go to Step 3.
NO
Go to Step 5.

3. Check vehicle speed signal.

Is vehicle speed displayed on scan tool in step 2 and 3 of DTC confirmation procedure?
YES
Intermittent trouble or faulty ECM.
Check for intermittent referring to Intermittent and Poor Connection Inspection.
NO
Go to Step 4.

4. Check VSS signal circuit.

With turn OFF ignition switch, disconnect connector from VSS.
Disconnect connectors from combination meter referring to Combination Meter Removal and Installation.
Turn ON ignition switch, without running engine.
Measure voltage from terminal "a" of VSS connector to ground.






Is voltage within 4 - 5 V?
YES
Faulty speedometer.
Faulty multi information display.
NO
"PPL" wire open or short.
Poor connection of ECM connector terminal.
If OK, substitute a known-good ECM and recheck.

5. Check power supply circuit.

With turn OFF ignition switch, disconnect connector from VSS.
Check proper connection for "BLK/WHT", "BLK/ORN" and "PPL" wire terminal.
If wires are OK, turn ON ignition switch, measure voltage between engine ground and "BLK/WHT" wire terminal.

Is it voltage 10 - 14 V?
YES
Go to Step 6.
NO
"BLK/WHT" wire open or shorted to ground circuit.

6. Check ground circuit.

Check that there is continuity between engine body ground and "BLK/ORN" wire terminal with ignition switch turn OFF.

Is there continuity?
YES
Go to Step 7.
NO
"BLK/ORN" wire open circuit.

7. Check wire circuit.

Turn ON ignition switch, measure voltage between engine ground and "PPL" wire terminal.

Is it voltage 10 - 14 V?
YES
Go to Step 9.
NO
Go to Step 8.

8. Check wire circuit.

Disconnect connectors from combination meter with ignition switch turn OFF.
Turn ON ignition switch, measure voltage between engine ground and "PPL" wire terminal.

Is it voltage 4 - 5 V?
YES
Faulty combination meter.
NO
Go to Step 9.

9. Check wire circuit.

Turn ON ignition switch, measure voltage between engine ground and "PPL" wire terminal at VSS connector.

Is it voltage 4 - 5 V?
YES
Go to Step 13.
NO
Go to Step 10.

10. Check ECM voltage.

Turn ON ignition switch, measure voltage between vehicle body ground and "G04-27" terminal at ECM connector.

Is it voltage 4 - 5 V?
YES
"PPL" wire open circuit.
NO
Go to Step 11.

11. Check short circuit.

Disconnect connectors from ECM with ignition switch turned OFF.
Turn ON ignition switch, measure voltage between engine ground and "PPL" wire terminal.

Is it voltage 0 V?
YES
Go to Step 12.
NO
"PPL" wire shorted to power supply circuit.

12. Check short circuit.

Measure resistance between engine ground and "PPL" wire terminal with ignition switch turned OFF.

Is resistance infinity?
YES
Go to Step 13.
NO
"PPL" wire shorted to ground circuit.
If wire are OK, substitute a known-good ECM and recheck.

13. Check signal rotor.

Remove VSS.
Visually inspect VSS sensor signal rotor for damage.

Was any damage found?
YES
Faulty VSS signal rotor.
NO
Go to Step 14.

14. Check VSS.

Check VSS, referring to Testing and Inspection Vehicle Speed Sensor (VSS) Inspection.

Is VSS in good condition?
YES
Substitute a known-good ECM and recheck.
NO
Faulty VSS.