U0126

U0126-LOST COMMUNICATION WITH STEERING ANGLE SENSOR

For a complete wiring diagram, refer to the Wiring Information.

NOTE: The Electronic Stability Control (ESC) may also be referred to as Electronic Stability Program (ESP) depending on the vehicle model year and configuration. Certain components may also reference ESP, ESC, or use the traction control symbol.

- When Monitored:

- With the ignition on
- Battery voltage between 10 and 16 Volts
- Ignition Off Draw (IOD) fuse installed
- Set Condition:
If the Anti-Lock Brakes System (ABS) Module fails to receive bus messages from the Steering Angle Sensor (SAS) for approximately 100 ms.





1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 Volts before proceeding.

1. Using the scan tool, read active DTCs.

Is this DTC active?

Yes

- Go To 2

No

- Perform the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test.

2. VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS
1. Turn the ignition on.
2. Using the scan tool, select Network Diagnostics.
3. Verify that the Steering Angle Sensor is active on the bus.

Is the Steering Angle Sensor active on the bus?

Yes

- Go To 3

No

- Perform the No Response from SAS diagnostic procedure. No Response From SAS (Steering Angle Sensor)

3. CLOCKSPRING (SAS)

WARNING: To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbag, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.

NOTE: Proper Clockspring (SAS) installation is crucial for proper operation.

1. Replace the Clockspring (SAS). Clockspring - Installation.
2. Perform the ABS VERIFICATION TEST. ABS Verification Test.
3. Using the scan tool, read ABS DTCs.

Did DTC U0126-LOST COMMUNICATION WITH STEERING ANGLE SENSOR reset?

Yes

- Replace the Anti-Lock Brakes System (ABS) Module.
- Perform the ABS VERIFICATION TEST. ABS Verification Test.

No

- Test Complete.