C1240–STEERING ANGLE SENSOR OVERTRAVEL PERFORMANCE

For a complete wiring diagram Refer to Section 8W.


  • When Monitored:

    With ignition on, but not if a CAN time out failure is detected.

    Or, if a fault is detected by the Steering Angle Sensor.

  • Set Condition:

    If the Anti-Lock Brakes Module detects that the absolute value of the measured steering wheel angle is greater than 720 degrees.


Possible Causes
  
VEHICLE DAMAGE
  
STEERING COLUMN / INTERMEDIATE SHAFT DAMAGE
  
STEERING WHEEL ALIGNMENT
  
STEERING ANGLE SENSOR LOOSE
  
STEERING ANGLE SENSOR IMPROPERLY INSTALLED (WRONG MOUNTING POSITION)
  
STEERING ANGLE SENSOR
  



Diagnostic Test

1.PERFORM TEST DRIVE & VERIFY DTC IS STILL ACTIVE




WARNING: To avoid personal injury or death, check brake capability is available before road testing.






Does this DTC reset?

Yes
  • Go To 2


No

2.INSPECT VEHICLE, STEERING COLUMN, & INTERMEDIATE SHAFT FOR DAMAGE

NOTE: If possible, check vehicle repair history for collision damage.






Were any problems found?

Yes


No
  • Go To 3

3.CHECK STEERING ANGLE CHANGE



NOTE: Sensor damage can occur if wheel is turned over 720 degrees.




Did the steering angle change accordingly and display less than 720 degrees from lock to lock?

Yes
  • Go To 4


No
  • Replace the Steering Angle Sensor in accordance with the Service Information and clear offsets by initializing ECU with wheels pointing straight ahead.
  • Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

4.CHECK STEERING ANGLE SENSOR INSTALLATION

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.




Is the Steering Angle Sensor properly installed?

Yes
  • Replace the Steering Angle Sensor and clear offsets by initializing ECU with wheels pointing straight ahead, in accordance with the Service Information.
  • Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).


No