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.

PERFORM THE LONGITUDINAL G SENSOR CALIBRATION ROUTINE
1. Turn the ignition on.
2. With the scan tool, read and record the ABS DTCs.
  NOTE:
  The Longitudinal G-Sensor Calibration routine must be performed on a level surface.
3. With the scan tool, perform the "Longitudinal G-Sensor Calibration" routine and perform and the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
4. Park the vehicle.
  Was the Longitudinal G-Sensor Calibration routine successful?
  
  Yes
  - Go To 2
  No
  - Perform the Longitudinal G-Sensor routine again, if still unsuccessful.
  - Go To 4
VERIFY THE DTC IS ACTIVE
NOTE:
This DTC must be active for the results of this test to be valid.
1. Turn the ignition on.
2. With the scan tool, erase the DTCs.
3. Cycle the ignition from off to on.
4. With the scan tool, read ABS DTCs.
  Does the DTC remain active?
  
  Yes
  - Go To 3
  No
  - Test complete.
CHECK THE ORC INSTALLATION
NOTE:
The Occupant Restraint Controller (ORC) installation and mounting bolt torque is crucial for proper operation.
1. Check the ORC for damaged, modified, and bent mounting brackets.
2. Check the ORC mounting bolts for a loose or over tightened condition.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Go To 4
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
1. Turn the ignition off to the lock position.
2. Replace the Occupant Restraint Controller (ORC) in accordance with the Service Information. (Refer to REMOVAL, ORC ).
3. Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
4. Test drive the vehicle by turning the vehicle left and right in a curving manner at a velocity between 15 and 35 km/h (9 and 22 mph).
5. With the scan tool, read the DTCs.
  Does the DTC remain active?
  
  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
  - Test complete.