U1651

Circuit Description
The EBCM monitors the received messages from the steering angle sensor for corruption or for missing messages.

Conditions for Running the DTC
^ The ignition is ON.
^ The vehicle speed is greater than 40 km/h (25 mph).

Conditions for Setting the DTC
The EBCM receives a corrupt or a missing message after 100 milliseconds.

Action Taken When the DTC Sets
^ A malfunction DTC is set
^ TCS and VSES are disabled
^ TCS, SERVICE VEHICLE SOON and PCS lamp indicators turn on

Conditions for Clearing the DTC
^ The condition for the DTC is no longer present.
^ Using a scan tool.
^ The EBCM automatically clears the history DTC when a current DTC is not detected in 124 consecutive drive cycles.

Diagnostic Aids
Possible causes of this DTC are as follows:
^ An open in the CAN HI or CAN LO circuit.
^ An open in the ignition circuit.
^ An open in the ground circuit.
^ Malfunctioning steering angle sensor.
^ Malfunctioning EBCM.

Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
2. Tests the ignition circuit for an open.
3. Checks the ground circuit for an open.
4. Tests the CAN HI circuit for an open.
5. Tests the CAN LO circuit for an open.
6. Checks the steering angle sensor connector for poor connections.