U1651

DTC U1651

DTC U1651 Step 1 - 4:

DTC U1651 Step 5 - 12:

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
If equipped, the following actions occur:
- The EBCM disables the TCSNSES and for the duration of the ignition cycle.
- A malfunction DTC will set.
- The Stability Off indicator turns 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 100 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 numbers refer to the step numbers 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.