EBC 445 ESP

U0126-LOST COMMUNICATION WITH STEERING ANGLE SENSOR

For a complete wiring diagram Refer to Diagrams/Electrical.


- When Monitored:

- With the ignition on
- Battery voltage between 10 and 16 volts
- IOD fuse installed
- Set Condition:
If the Anti-Lock Brakes Module fails to receive bus messages from the Steering Angle Sensor for approximately 100 ms.







Diagnostic Test


1. VERIFY DTC IS ACTIVE
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

With the scan tool, read active DTCs.
Is this DTC active?

Yes


- Go To 2


No


- Perform the ABS Intermittent Condition diagnostic procedure.




2. VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS
Turn the ignition on.
With the scan tool, select Network Diagnostics.
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


- Refer to a no response test procedure.Manufacturer Code Charts
- Perform BODY VERIFICATION TEST - VER 1.



3. STEERING ANGLE SENSOR
WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental restraint system before attempting any steering wheel, steering column, airbag, occupant classification system, 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 supplemental restraint system. Failure to take the proper precautions could result in accidental airbag deployment.


NOTE: Proper Steering Angle Sensor installation is crucial for proper operation.

Replace the Steering Angle Sensor.
Perform ABS VERIFICATION TEST. ABS Verification Test .
With the scan tool, read ABS DTCs.
Did DTC U0126-LOST COMMUNICATION WITH STEERING ANGLE SENSOR reset?

Yes


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


No


- Test Complete.