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 DIAGNOSTIC TROUBLE CODE (DTC)
1. Turn the ignition on.
2. With the scan tool, read DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go To 2
  No
  - Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(D706) PARK ASSIST SENSOR 3 SIGNAL CIRCUIT SHORTED TO BATTERY
1. Turn the ignition off.
2. Disconnect the Park Assist Module C3 harness connector.
3. Disconnect the Park Assist Sensor harness connector.
4. Turn the ignition on.
5. Measure the voltage of the (D706) Park Assist Sensor 3 Signal circuit.
  Is the voltage above 10.0 volts?
  
  Yes
  - Repair the (D706) Park Assist Sensor 3 Signal circuit for a short to battery.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
(D706) PARK ASSIST SENSOR 3 SIGNAL CIRCUIT SHORTED TO THE (X702) FRONT PARK ASSIST SENSOR SUPPLY CIRCUIT
1. Turn the ignition off.
2. Measure the resistance between the (D706) Park Assist Sensor 3 Signal circuit and the (X702) Front Park Assist Sensor Supply circuit.
  Is the resistance below 10K Ohms?
  
  Yes
  - Repair the (D706) Park Assist Sensor 3 Signal circuit for a short to the (X702) Front Park Assist Sensor Supply circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
(X751) FRONT PARK ASSIST SENSOR GROUND CIRCUIT OPEN
1. Reconnect the Park Assist Module C3 harness connector.
2. Measure the resistance between ground and the (X751) Front Park Assist Sensor Ground circuit.
  Is the resistance above 20.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Replace the Park Assist Sensor in accordance with the Service Information. Refer to SENSOR, PARK ASSIST, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
(X751) FRONT PARK ASSIST SENSOR GROUND CIRCUIT OPEN BETWEEN PARK ASSIST MODULE AND SENSOR
1. Disconnect the Park Assist Module C3 harness connector.
2. Measure the resistance of the (X751) Front Park Assist Sensor Ground circuit.
  Is the resistance above 5.0 Ohms?
  
  Yes
  - Repair the open in the (X751) Front Park Assist Sensor Ground circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Replace the Park Assist Module in accordance with the Service Information. Refer to SENSOR, PARK ASSIST, REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .