2010 Cadillac Truck SRX FWD V6-3.0L Page 1532

2010 Cadillac Truck SRX FWD V6-3.0L Page 1532

DTC P0503

- Vehicle Speed Sensor Circuit Intermittent

Circuit/System Description

The transmission control module (TCM) provides the engine control module (ECM) vehicle speed information through the high-speed

communication on the controller area network (CAN). Vehicle speed is produced by the alternating current (AC) generated through the

transmission output shaft speed (OSS) sensor as the output shaft rotates. The ECM continuously monitors the vehicle speed signal supplied by the

TCM.

Conditions for Running the DTC

* Engine coolant temperature is more than 39.8掳C (104掳F).

* No engine coolant temperature DTC is set.

* No engine speed sensor DTC is set.

* The DTCs run continuously once the above condition is met.

Conditions for Setting the DTC

P0501

The ECM detects the CAN signal is not valid for more than 2 s.

P0503

The ECM detects the vehicle speed is greater than 275 km/h (171 MPH) for more than 0.2 s.

Action Taken When the DTC Sets

* DTC P0501 is a Type C DTC.

* DTC P0503 is a Type B DTC.

Conditions for Clearing the DTC

* DTC P0501 is a Type C DTC.

* DTC P0503 is a Type B DTC.

Reference Information

Schematic Reference

Automatic Transmission Controls Schematics (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Diagrams/Electrical

Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Description and Operation

Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and

Operation/AF40-6 - Automatic Transmission/Transmission Component and System Description)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification