2007 Commander XK Factory Service Manual 8 - ELECTRICAL

U1101-LOST COMMUNICATION WITH PTS DISPLAY

For a complete wiring diagram Refer to Section 8W.

When Monitored:
While the vehicle is in reverse for speeds less than 16km/h.
Set Condition:
Data display line open.

Possible Causes

(D777) PARK ASSIST DISPLAY SIGNAL CIRCUIT OPEN

(X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT OPEN

(Z171) PARK ASSIST DISPLAY GROUND CIRCUIT OPEN

PARK ASSIST DISPLAY

PARK ASSIST MODULE

Diagnostic Test

1. CHECK FOR ACTIVE DTC: U1101-LOST COMMUNICATION WITH PTS DISPLAY

Turn the ignition on.
Apply the vehicle park brake.
Shift the transmission into Reverse.
With the scan tool, record and erase Park Assist Module DTCs.
Wait 30 seconds.
With the scan tool, read Park Assist Module DTCs.

Is DTC: U1101-LOST COMMUNICATION WITH PTS DISPLAY active?

Yes

Go To 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 BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

2. CHECK THE (D777) PARK ASSIST DISPLAY SIGNAL CIRCUIT FOR AN OPEN

Turn the ignition off.
Disconnect the Park Assist Module harness connector.
Disconnect the Park Assist Display Module harness connector.
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 5.0 ohms?

Yes

Go To 3

No

Repair the (D777) Park Assist Display Signal circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

3. CHECK THE (X777) PARK ASSIST DISPLAY SUPPLY CIRCUIT FOR AN OPEN

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 5.0 ohms?

Yes

Go To 4

No

Repair the (X777) Park Assist Display Supply circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

4. CHECK THE (Z171) PARK ASSIST DISPLAY GROUND CIRCUIT FOR AN OPEN

Measure the resistance of the (Z171) Park Assist Display Ground circuit between the Park Assist Module harness connector and the Park Assist Display harness connector.

Is the resistance below 5.0 ohms?

Yes

Go To 5

No

Repair the (Z171) Park Assist Display Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

5. CHECK THE OPERATION OF THE PARK ASSIST DISPLAY

Replace the Park Assist Display in accordance with the service information.
Reconnect the Park Assist Module harness connector.
Turn the ignition on.
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 BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)

No

Test Complete.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)