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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> Brakes >> Traction Control >> (Antilock Brake System (Abs) - Electrical Diagnostics) >> DTC Troubleshooting >> C1219-Steering Angle Sensor Erratic Performance >> Diagnostic Test

Diagnostic Test

  1. PERFORM TEST DRIVE AND VERIFY DTC IS STILL ACTIVE 
    NOTE:

    If present, diagnose and repair DTC C123F-STEERING ANGLE SENSOR COMPARATIVE PERFORMANCE before diagnosing this DTC.

    1. Turn the ignition on.
    2. With the scan tool, read and record DTCs.
    3. With the scan tool, read and record Environmental Data to help identify the conditions in which the DTC was set.
    4. Perform ECU initialization with drive test. Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
      WARNING:

      To avoid possible serious or fatal injury, check brake capability is available before road testing.

    5. Test drive the vehicle by driving straight at a velocity between 10 and 25 km/hr (6 and 15 mph.) for 1 minute.
    6. Park the vehicle.
    7. Turn the steering wheel from stop to stop.
    8. With the scan tool, read ABS DTCs.

      Does this DTC reset?

      Yes 

      • Go To  2

      No 

      • The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
      • Perform the ABS-INTERMITTENT CONDITION TEST. Refer to STANDARD PROCEDURE .
  2. CHECK STEERING ANGLE SENSOR OUTPUT 
    1. Start the engine.
    2. Center the steering wheel.
    3. With the scan tool, read the Steering Angle Sensor Position.

      Is the Steering Angle Sensor Position within ±15°?

      Yes 

      • Go To  3

      No 

      • Go To  4
  3. INSPECT VEHICLE, STEERING COLUMN, AND INTERMEDIATE SHAFT FOR DAMAGE 
    NOTE:

    If possible, check vehicle repair history for collision damage. ABS module must be reinitialized after repair.

    1. Turn the ignition off.
    2. Inspect the vehicle for damage causing tracking problems.
    3. Inspect the steering column and intermediate shaft for damage.

      Were any problems found?

      Yes 

      • Repair as necessary and clear offsets by initializing ECU with wheels pointing straight ahead.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Go To  4
  4. CHECK CLOCKSPRING (SAS) INSTALLATION 
    WARNING:

    To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS). Refer to RESTRAINTS - SERVICE INFORMATION 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. Verify that the Clockspring (SAS) is properly installed.

      Is the Steering Angle Sensor properly installed?

      Yes 

      • Replace the Clockspring (SAS) in accordance with the Service Information and clear offsets by initializing ECU with wheels pointing straight ahead.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .

      No 

      • Repair as necessary and clear offsets by initializing ECU with wheels pointing straight ahead.
      • Perform the ABS VERIFICATION TEST. Refer to STANDARD PROCEDURE .
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