DTC P0500 [LF, L3]

id0102008084a3

DTC P0500

Vehicle speed sensor (VSS) circuit malfunction (MTX vehicles without ABS)

DETECTION CONDITION

• The vehicle speed signal does not input after following conditions are met:
- Gear is in a position other than the neutral position
- Load is above 40%
- Engine speed is 2,000 rpm or above
Diagnostic support note:
• This is a continuous monitor (CCM).
• The MIL illuminates if the PCM detects the above malfunction conditions 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.
• The FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• VSS malfunction
• ABS/TCS/DCS malfunction
• Connector or terminal malfunction
• Open circuit between PCM terminal 2I and VSS terminal A
• Open circuit between PCM terminal 2L and VSS terminal B
• Short to ground between PCM terminal 2I and VSS terminal A
• Short to ground between PCM terminal 2L and VSS terminal B
• Short to power between PCM terminal 2I and VSS terminal A
• Short to power between PCM terminal 2L and VSS terminal B
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has the FREEZE FRAME PID DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME PID DATA on repair order, then go to the next step.
2
VERIFY RELATED SERVICE INFORMATION AVAILABILITY
• Check for related Service Information availability.
• Is any related Service Information available?
Yes
Perform the repair or diagnosis according to the available Service Information.
• If the vehicle is not repaired, Go to the next step.
No
Go to the next step.
3
VERIFY CURRENT INPUT SIGNAL STATUS-IS CONCERN INTERMITTENT OR CONSTANT
• Connect the WDS or equivalent to the DLC-2.
• Start the engine.
• Access the VSS PID using the WDS or equivalent.
- Vehicle speed 20 km/h {12.4 mph}: 20km/h {12.4 mph}
- Vehicle speed 40 km/h {24.8 mph}: 40km/h {24.8 mph}
• Are the PID readings within the specification?
Yes
Go to the intermittent concern troubleshooting procedure.
No
Go to the next step.
4
INSPECT VSS FOR POOR CONNECTION
• Verify that the VSS connector is connected securely.
• Is the connector normal?
Yes
Go to the next step.
No
Reconnect the connector, then go to Step 11.
5
INSPECT VSS
• Perform the VSS inspection.
• Is the VSS normal?
Yes
Go to the next step.
No
Replace the VSS, then go to Step 11.
6
INSPECT VSS CIRCUIT FOR SHORT TO POWER
• Turn the ignition switch to the OFF position.
• Disconnect VSS connector.
• Turn the ignition switch to the ON position (Engine off)
• Measure the voltage at the following terminals:
- VSS terminal A
- VSS terminal B
• Is any the voltage reading?
Yes
Repair or replace the suspected wiring harness, then go to Step 11.
No
Go to the next step.
7
INSPECT VSS CIRCUIT FOR SHORT TO GROUND
• Inspect for continuity between the following terminals and body ground:
- VSS terminal A
- VSS terminal B
• Is there continuity?
Yes
Repair or replace the suspected wiring harness, then go to Step 11.
No
Go to the next step.
8
INSPECT VSS CIRCUITS FOR SHORT CIRCUIT
• Inspect for continuity between VSS connector terminals A and B.
• Is there continuity?
Yes
Repair or replace the suspected wiring harness, then go to Step 11.
No
Go to the next step.
9
INSPECT PCM FOR POOR CONNECTION
• Disconnect the PCM connector.
• Inspect for poor connection (damaged, pulled-out terminals, corrosion, etc.).
• Is there any malfunction?
Yes
Repair the terminal, then go to Step 11.
No
Go to the next step.
10
INSPECT VSS CIRCUIT for an open circuit CIRCUIT
• Inspect for continuity between the following circuits:
- VSS terminal A and PCM terminal 2I
- VSS terminal B and PCM terminal 2L
• Is there continuity?
Yes
Inspect the VSS pulse wheel for damage. Replace the VSS pulse wheel and go to the next step.
No
Repair or replace the suspected wiring harness, then go to the next step.
11
VERIFY TROUBLESHOOTING OF DTC P0500 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the ignition switch to the ON position (Engine off).
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Warm up the engine.
• Access RPM and LOAD PID using the WDS or equivalent.
• Drive the vehicle under following conditions for 18s.
- Engine speed: 2,000 rpm or above
- Gear: Gear is in other than NEUTRAL
- Load: 40% or above
• Is PENDING CODE the same as DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
12
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
• Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.