MVC 5 Speed - Manual Transmission

DTC P0500

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.

DTC Descriptors
DTC P0500
- Vehicle Speed Sensor (VSS) Circuit

Circuit/System Description

The wheel speed sensors provide an A/C signal input to the electronic brake control module (EBCM). The A/C signal is converted to digital information and sent out as high speed communication on the controller area network (CAN). The vehicle speed is used by the instrument panel (IP) to display vehicle speed and to the engine control module (ECM) to maintain engine and vehicle operating parameters and conditions.

Conditions for Running the DTC

P0500
* No communication codes are set.
* Engine speed is 1800-2200 RPM.
* ECM deceleration fuel shutoff is active.
* Engine coolant temperature is greater than 65° (149°F).
* Vehicle speed is less than 4.83 km/h (3 mph) for a total of 1 minute.

Action Taken When the DTC Sets

* The ECM illuminates the malfunction indicator lamp (MIL) during the second consecutive trip in which the Conditions for setting the DTC are met.
* The ECM records the operating conditions when the Conditions for Setting the DTC are met. The ECM stores this information as Freeze Frames and Failure Records.

Conditions for Clearing the DTC

DTC P0500 is a Type A DTC.

Reference Information
Schematic Reference

* Antilock Brake System Schematics ([1][2]Antilock Brakes / Traction Control Systems)
* Data Communication Schematics (Electrical Diagrams)

Connector End View Reference

* Component Connector End Views (Connector Views)
* Inline Harness Connector End Views (Inline Harness Connector End Views)

Description and Operation

Data Link Communications Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (Diagnostic Trouble Code Descriptions)
Scan Tool Reference

Powertrain Control Module Scan Tool Information (Scan Tool Testing and Procedures)
Special Tools

J 35616 - GM-Approved Terminal Test Kit

Circuit/System Verification

1. If DTCs C0200-C0215, C1235-C1239, C1271-C1278 or any U-communication DTCs are set, diagnose those DTCs first.
2. Observe the EBCM, IP and ECM speed signal parameters with a scan tool, while driving the vehicle. All three parameters values should be identical.
3. 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: You must perform the Circuit/System Verification first.

Refer to Symptoms - Data Communications (- Symptoms - Data Communications).

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.

Refer to Control Module References (Programming and Relearning) for ECM replacement, setup and programming.