Diagnostic Test

CHECK FOR ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read Park Assist Module DTCs.
  Is this DTC active?
  
  Yes
  - Go to step 2
  No
  - The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
CHECK THE (D777) PARK ASSIST DISPLAY SIGNAL CIRCUIT FOR AN OPEN

Fig 1: Checking Park Assist Sensor Signal Circuit
Courtesy of CHRYSLER LLC
1. Turn the ignition off.
2. Disconnect the Park Assist Module harness connector.
3. Disconnect the Park Assist Display Module harness connector.
4. Measure the resistance of the (D777) Park Assist Display Signal circuit between the Park Assist Module harness connector and the Park Assist Display harness connector.
  Is the resistance below 10.0 Ohms?
  
  Yes
  - Go to step 3
  No
  - Repair the (D777) Park Assist Display Signal circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
CHECK THE (X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT FOR AN OPEN

Fig 2: Checking Park Assist Sensor Supply Circuit
Courtesy of CHRYSLER LLC
1. Measure the resistance of the (X777) Park Assist Display Supply circuit between the Park Assist Module harness connector and the Park Assist Display harness connector.
  Is the resistance below 10.0 Ohms?
  
  Yes
  - Go to step 4
  No
  - Repair the (X777) Park Assist Display Supply circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
CHECK THE (X772) PARK ASSIST DISPLAY GROUND CIRCUIT FOR AN OPEN

Fig 3: Checking Park Assist Sensor Ground Circuit
Courtesy of CHRYSLER LLC
1. Using a 12-volt test light connected to 12-volts check the (X772) Park Assist Display Ground circuit at the Park Assist Display harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go to step 5
  No
  - Repair the (X772) Park Assist Display Ground circuit for an open.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
CHECK THE OPERATION OF THE PARK ASSIST DISPLAY
1. Replace the Park Assist Display in accordance with the Service Information.
2. Reconnect the Park Assist Module harness connector.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  Does the scan tool display U1101-LOST COMMUNICATION WITH PTS DISPLAY?
  
  Yes
  - Replace the Park Assist Module in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .
  No
  - Test Complete.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Standard Procedure .