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DTC P0500

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P0500: Vehicle Speed Sensor (VSS) Circuit

Circuit/System Description

The wheel speed sensor produces an alternating current signal whose amplitude and frequency vary, depending on the velocity of the wheel. The electronic brake control module (EBCM) uses the frequency of the AC signal to calculate the wheel speed. The EBCM provides the engine control module (ECM) vehicle speed information through the high-speed communications on the controller area network (CAN). The ECM continuously monitors the vehicle speed signal supplied by the EBCM.

Conditions for Running the DTC
    • The engine is running.
    • The DTCs run continuously once the above condition is met.

Conditions for Setting the DTC

P0500

The ECM detects the vehicle speed CAN signal is not valid.

Action Taken When the DTC Sets

DTCs P0500 is a Type B DTC.

Conditions for Clearing the DTC

DTC P0500 is a Type B DTC.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification
  1. Ignition ON, observe the DTC information with a scan tool. Verify no EBCM, transmission control module (TCM) or communication DTCs are set.
    2. ⇒If any TCM or communication DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
  2. Raise the drive wheels.

    3. Caution: Support the lower control arms in the normal horizontal position in order to avoid damage to the drive shafts. Do not operate the vehicle in gear with the wheels hanging down at full travel.

  3. Support the lower control arms so that the drive axles are in a horizontal position.
  4. Engine running, place the transmission into 2nd gear.
  5. Observe the scan tool VSS parameter. The following should display a vehicle speed once the drive wheels are at a speed above 2 km/h (1 MPH):
    6. • The VSS parameter
    • The speedometer
  6. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

Note: Circuit/System Verification must be performed before Circuit/System Testing.

  1. Ignition OFF, test the High Speed CAN terminal 84 and the Low Speed CAN terminal 83 between the ECM and the TCM for an open, short to ground, or a short to voltage.
  2. If all circuits test normal, replace the ECM.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

Control Module References for engine control module replacement, setup, and programming

   


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