DTC P0500 [FN4A-EL]

id0502a1805700

DTC P0500

Vehicle speed sensor (VSS) circuit malfunction

DETECTION CONDITION

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

POSSIBLE CAUSE

• VSS malfunction
• Open circuit between VSS terminal B and PCM terminal 1AY
• Short to ground between VSS terminal B and PCM terminal 1AY
• Open circuit between VSS terminal A and PCM terminal 1BC
• 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 FREEZE FRAME PID DATA been recorded?
Yes
Go to next step.
No
Record FREEZE FRAME PID DATA on repair order, then go to next step.
2

VERIFY RELATED SERVICE INFORMATION AVAILABILITY

• Check for related Service Bulletins availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to available repair information.
• If vehicle is not repaired, go to next step.
No
Go to next step.
3

INSPECT VSS CONNECTOR FOR POOR CONNECTION

• Turn the ignition switch off.
• Disconnect VSS connector.
• Check for poor connection (damaged/pulled-out terminals, corrosion, etc.).
• Is connection normal?
Yes
Go to next step.
No
Repair or replace pin or connector, then go to Step 10.
4

INSPECT VSS POWER CIRCUIT FOR OPEN CIRCUIT

• Verify that VSS connector is disconnected.
• Turn the ignition switch to the ON position (Engine OFF).
• Check voltage between VSS terminal A (harness-side) and ground
• Is voltage reading B+?
Yes
Go to next step.
No
Repair or replace harness, then go to Step 10.
5

INSPECT VSS GROUND CIRCUIT FOR OPEN CIRCUIT

• Turn the ignition switch off.
• Verify that VSS connector is disconnected.
• Check for continuity between VSS terminal C (harness-side) and ground
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness, then go to Step 10.
6

INSPECT PCM CONNECTOR FOR POOR CONNECTION

• Disconnect PCM connector.
• Check for poor connection (damaged/pulled-out terminals, corrosion, etc.).
• Is connection normal?
Yes
Go to next step.
No
Repair or replace pin or connector, then go to Step 10.
7

INSPECT VEHICLE SPEED SIGNAL CIRCUIT FOR OPEN CIRCUIT

• Disconnect PCM connector and VSS connector.
• Inspect for continuity between VSS terminal B and PCM terminal 1AY.
• Is there continuity?
Yes
Go to next step.
No
Repair or replace harness, then go to Step 10.
8

INSPECT VEHICLE SPEED SIGNAL CIRCUIT FOR SHORT TO GROUND

• Verify that VSS connector and PCM connector are disconnected.
• Inspect for continuity between PCM terminal 1AY and body ground.
• Is there continuity?
Yes
Repair or replace harness, then go to Step 10.
No
Repair VSS, then go to Step 14.
9

INSPECT PCM CONNECTOR FOR POOR CONNECTION

• Disconnect PCM connector.
• Check for poor connection (damaged/pulled-out terminals, corrosion, etc.).
• Is connection normal?
Yes
Go to next step.
No
Repair or replace pin or connector, then go to Step 10.
10
VERIFY TROUBLESHOOTING OF DTC P0500 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Clear DTC from memory using WDS or equivalent.
• Warm up engine.
• Drive vehicle under following conditions for

4.5 s or more while monitoring PIDs.

- Engine coolant temp: 60 °C {140 °F} or above
- Drive in L range
- Frequency of input/turbine speed sensor: 800 Hz or above
• Is pending code present?
Yes
Replace PCM, then go to next step.
No
No concern is detected. Go to next step.
11
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Are any DTCs present?
Yes
Go to applicable DTC inspection.
No
Troubleshooting completed.