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.

CHECK FOR AN ACTIVE DTC
NOTE:
If DTC C0031-1D is present, perform the diagnostics for this DTC before continuing with this diagnostic procedure.

NOTE:
This vehicle uses non-directional front wheel speed sensors and directional rear wheel speed sensors.
1. Ignition on.
2. With the scan tool, record and erase DTCs.
3. With the scan tool, read DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Test Complete.
LEFT FRONT WHEEL SPEED SENSOR
NOTE:
This vehicle uses a non-directional front wheel speed sensor, make sure the correct wheel speed sensor is installed on the vehicle.
1. Replace the Left Front Wheel Speed Sensor in accordance with the Service Information. Refer to SENSOR, WHEEL SPEED, FRONT, REMOVAL . Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  CAUTION:
  Make sure brake capability is available before road testing.
2. Road test the vehicle over 40 km/h (25 mph).
3. With the scan tool, read DTCs.
  Does the DTC remain active?
  
  Yes
  - Replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM (ABS), REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Test complete.