U0159-LOST COMMUNICATION WITH PARK ASSIST CONTROL MODULE

For a complete wiring diagram Refer to Section 8W.

When Monitored:
With the ignition on.
Battery voltage between 10 and 16 volts.
IOD fuse installed.
FCM is configured correctly.
Set Condition:
Bus messages not received from the Park Assist Module (PTS) for approximately 2 to 5 seconds.

Possible Causes

CAN B BUS CIRCUITS OPEN OR SHORTED

DTCS RELATED TO BATTERY VOLTAGE, IGNITION, OR VIN MESSAGES

FCM NOT CONFIGURED CORRECTLY

PARK ASSIST MODULE

PARK ASSIST MODULE POWER OR GROUND

MODULE THAT SET THIS DTC

1.VERIFY DTC IS ACTIVE

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

Is this DTC active?

Yes

Refer to the Stored Lost Communication test procedure. Refer to the table of contents in this section.

2.CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS

NOTE: Check for FCM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.

Does the scan tool display any active DTCs to the conditions listed above?

Yes

Diagnose and repair the DTC. Refer to the Table of Contents for a complete list of the symptoms.

3.VERIFY THAT THE PTS IS ACTIVE ON THE BUS

Is the PTS active on the bus?

Yes

Refer to the Table of Contents located in this section for a no response test procedure.

4.CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS

Is there more than one module with active DTCs “Logged Against” the PTS?

Yes

Replace/update the Park Assist Module (PTS) in accordance with the service information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE).

Replace/update the module that set this DTC in accordance with the service information
Perform the appropriate VERIFICATION TEST.