Locks, Latches and Entry Systems — 2016 workshop reference 1417

Normal Operation and Fault Conditions

The DDM/ PDM communicates with the BCM over the CAN. If the DDM/ PDM does not receive messages from the BCM, features such as the puddle lamps, exterior mirror turn signal and door switch illumination can be inoperative.

DDM/ PDM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
	U0140:00 Lost Communication With Body Control Module: No Sub-Type Information	Sets when the DDM/ PDM detects data messages are missing from the BCM.

DTC

Description

Fault Trigger Conditions

U0140:00 Lost Communication With Body Control Module: No Sub-Type

Information

Sets when the DDM/ PDM detects data messages are missing from the BCM.

Possible Cause

Network communication concern DDM/ PDM BCM

PINPOINT TEST W : U0140:00

W1 VERIFY THE CUSTOMER CONCERN

Ignition ON. Verify there is an observable symptom present.

Is an observable symptom present?

Yes	GO to W2
No	The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

W2 CHECK THE COMMUNICATION NETWORK

Using a diagnostic scan tool, perform a network test.

Does the BCM pass the network test?

Yes	GO to W3
No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

W3 CHECK FOR BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, perform the BCM self-test.

Are any voltage related Diagnostic Trouble Codes (DTCs) present?

Yes	REFER to: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
No	GO to W4

W4 RECHECK THE DDM (DRIVER DOOR MODULE) OR PDM (PASSENGER DOOR MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been performed. Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs) and repeat the DDM/ PDM self-test.

Is DTC U0140:00 still present?

Yes	GO to W5
No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

W5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0140 SET IN OTHER MODULES

Using a diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs). Ignition OFF. Ignition ON. Wait 30 seconds. Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0140 set in other modules?

Source reference 1417

2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.