Anti-Lock Brake System (ABS) and Stability Control — 2016 workshop reference 2962

Is the concern still present?

Yes		CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new ABS module. REFER to: Anti-Lock Brake System (ABS) Module (206-09 Anti-Lock Brake System (ABS) and Stability Control, Removal and Installation).
No		The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

U0140:00, U0422:00

Refer to Wiring Diagrams Cell 42 for schematic and connector information.

Normal Operation and Fault Conditions

With the ignition ON, the BCM sends messages to the ABS module through the GWM over the HS-CAN1. If the ABS module does not receive these messages within a certain time frame, the module sets Diagnostic Trouble Codes (DTCs). For information on the messages sent to the ABS module by the BCM, refer to the Network Message Chart. REFER to: Anti-Lock Brake System (ABS) and Stability Control - System Operation and Component Description (206-09 Anti-Lock Brake System (ABS) and Stability Control, Description and Operation).

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
	U0140:00 Lost Communication With Body Control Module: No Sub Type Information	This DTC sets in continuous memory and on-demand when any of the messages from the BCM are missing. This can be due to a GWM failure, BCM failure, a circuit failure or excessive load on the HS-CAN1 or HS-CAN2.
	U0422:00 Invalid Data Received From Body Control Module: No Sub Type Information	This DTC sets in continuous memory and on-demand if the ABS module receives "fault" or "unknown" in any one of the following BCM messages instead of valid message data; battery low state of charge, door ajar status, ignition key type, ignition status, park brake status or vehicle configuration data.

DTC

Description

Fault Trigger Conditions

U0140:00 Lost Communication With

Body Control Module: No Sub Type Information

This DTC sets in continuous memory and on-demand when any of the messages from the BCM are missing. This can be due to a GWM failure, BCM failure, a circuit failure or excessive load on the HS-CAN1 or HS-CAN2.

U0422:00 Invalid Data Received From

Body Control Module: No Sub Type Information

This DTC sets in continuous memory and on-demand if the ABS module receives "fault" or "unknown" in any one of the following BCM messages instead of valid message data; battery low state of charge, door ajar status, ignition key type, ignition status, park brake status or vehicle configuration data.

Possible Causes

Wiring, terminals or connectors Network communication concern GWM BCM

PINPOINT TEST D : U0140:00, U0422:00

D1 CHECK THE COMMUNICATION NETWORK

Ignition ON. Using a diagnostic scan tool, carry out the Network Test.

Do both the BCM and the GWM pass the Network Test?

Source reference 2962

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.