DTC P0500 [FN4A-EL]

BME050201030205

DTC P0500

Vehicle speed sensor (VSS) circuit malfunction

DETECTION CONDITION

• If the vehicle speed signal not input after following conditions are met and 4.5 s or more have passed, the PCM determines that there is a malfunction.
- D, L, or S range switch ON
- P and N position of TR switch OFF
- Engine coolant temperature 60 °C {140 °F} or more
- Turbine speed 1,500 rpm or more
Diagnostic support note:
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• The PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• The HOLD indicator light flashes.
• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• VSS malfunction
• Open circuit between VSS terminal B and PCM terminal 3C
• Short to ground between VSS terminal B and PCM terminal 3C
• Open circuit between VSS terminal A and main relay
• Open circuit between VSS terminal C and body ground
• Damaged connectors between VSS and PCM
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1

VERIFY FREEZE FRAME DATA HAS BEEN RECORDED

• Has the FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Verify related Service Bulletins and or/on-line repair information availability.
• Is any related repair Information available?
Yes
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3

INSPECT VSS CONNECTOR FOR POOR CONNECTION

• Turn the ignition switch to the LOCK position.
• Disconnect the VSS connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the pin or connector, then go to Step 9.
4

INSPECT VSS POWER CIRCUIT FOR OPEN CIRCUIT

• Verify that the VSS connector is disconnected.
• Turn the ignition switch to the ON position (engine off).
• Inspect the voltage between VSS (wiring harness-side) terminal A and ground
• Is the voltage B+?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 9.
5

INSPECT VSS GROUND CIRCUIT FOR OPEN CIRCUIT

• Turn the ignition switch to the LOCK position.
• Verify that VSS connector is disconnected.
• Inspect for continuity between VSS (wiring harness-side) terminal C and ground.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 9.
6

INSPECT PCM CONNECTOR FOR POOR CONNECTION

• Disconnect the PCM connector.
• Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
• Is the connection normal?
Yes
Go to the next step.
No
Repair or replace the pin or connector, then go to Step 9.
7

INSPECT VEHICLE SPEED SIGNAL CIRCUIT FOR OPEN CIRCUIT

• Disconnect the PCM connector and VSS connector.
• Inspect for continuity between VSS (wiring harness-side) terminal B and PCM (wiring harness-side) terminal 3C.
• Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness, then go to Step 9.
8

INSPECT VEHICLE SPEED SIGNAL CIRCUIT FOR SHORT TO GROUND

• Verify that VSS connector and PCM connector are disconnected.
• Inspect for continuity between PCM (wiring harness-side) terminal 3C and body ground.
• Is there continuity?
Yes
Repair or replace the wiring harness, then go to the next step.
No
Repair VSS, then go to the next step.
9
VERIFY TROUBLESHOOTING OF DTC P0500 COMPLETED
• Make sure to reconnect all the disconnected connectors.
• Clear the DTC from the memory using the WDS or equivalent.
• Warm up engine.
• Drive the vehicle under the following conditions for 4.5 s or more while monitoring PIDs.
- Engine coolant temp: 60 °C {140 °F} or more
- Drive in L range
- Frequency of input/turbine speed sensor: 800 Hz or more
• Is the PENDING CODE present?
Yes
Replace the PCM, then go to the next step.
No
No concern is detected. Go to the next step.
10

VERIFY AFTER REPAIR PROCEDURE

• Perform the "After Repair Procedure".
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
No
DTC troubleshooting completed.