Diagnostic Test

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE
NOTE:
This DTC must be active for the results of this test to be valid.
1. Perform any Technical Service Bulletins (TSBs) that may apply.
2. Ignition on, engine not running.
3. Using the scan tool, read and record DTCs.
4. Using the scan tool, read and record Environmental Data.
5. Using the scan tool, erase DTCs.
6. Start the engine.
7. Slowly turn the steering wheel from lock to lock.
8. Using the scan tool, read and record DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
INSPECT THE WHEEL ALIGNMENT, STEERING COLUMN AND INTERMEDIATE SHAFT FOR INCORRECT INSTALLATION OR DAMAGE
NOTE:
If available, check the vehicle repair history for collision damage.
1. Perform any Technical Service Bulletins (TSBs) that may apply
2. Inspect the vehicle for proper wheel alignment.
3. Inspect the vehicle for damage causing tracking problems or steering wheel misalignment.
4. Inspect the steering column and intermediate shaft for damage.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 3
CHECK THE STEERING ANGLE
1. Turn steering wheel so wheels point in a straight ahead position.
2. With scan tool, graph the steering angle while slowly rotating steering wheel from lock to lock.
  Is the Steering Angle reading within ±15°?
  
  Yes
  - Go To 4
  No
  - Replace the Electric Power Steering (EPS) module in accordance with the Service Information. Refer to GEAR, REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
CHECK STEERING ANGLE CHANGE
1. Turn steering wheel so wheels point in a straight ahead position.
2. With scan tool, graph the steering angle to see while rotating wheel from lock to lock.
  NOTE:
  Sensor damage can occur if wheel is turned over 720°.
3. Rotate steering wheel to the right and the degrees will decrease and rotating steering wheel to the left the degrees will increase.
  Did the steering angle change accordingly and display lower then 720° from lock to lock with no erratic signal behavior?
  
  Yes
  - Replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to INTEGRATED CONTROL UNIT (ICU), REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Replace the Electric Power Steering (EPS) module in accordance with the Service Information. Refer to GEAR, REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .