Locks, Latches and Entry Systems — 2016 workshop reference 1415

U5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0146 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 U0146 set in other modules?

Yes	INSTALL a new GWM. REFER to: Gateway Module A (GWM) (418-00 Module Communications Network, Removal and Installation).
No	INSTALL a new RTM. REFER to: Radio Transceiver Module (RTM) (419-10 Multifunction Electronic Modules, Removal and Installation).

U0258:87 or U1A00:00

Refer to Wiring Diagrams Cell 117 for schematic and connector information.

Normal Operation and Fault Conditions

The RTM communicates with the BCM over a LIN circuit and, when the network is awake, over the CAN.

RTM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
U1A00:00	Private Communication Network: No Sub Type Information	Sets when the RTM detects a fault with the LIN circuit to the BCM.

BCM DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
	U0258:87 Lost Communication With Radio Transceiver: Missing Message	Sets when the BCM detects a communication fault with the RTM over the LIN circuit.

DTC

Description

Fault Trigger Conditions

U0258:87 Lost Communication With Radio Transceiver: Missing

Message

Sets when the BCM detects a communication fault with the RTM over the LIN circuit.

Possible Cause

Wiring, terminals or connectors RTM BCM

PINPOINT TEST V : U0258:87 OR U1A00:00

V1 CHECK IF THE RTM (RADIO TRANSCEIVER MODULE) AND THE BCM (BODY CONTROL MODULE) PASS THE NETWORK TEST

Ignition ON. Using a diagnostic tool, perform the network test.

Does the RTM and the BCM pass the network test?

Yes	GO to V2
No	REFER to: Communications Network (418-00 Module Communications Network, Diagnosis and Testing).

V2 CHECK THE LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR A SHORT TO VOLTAGE

Disconnect RTM C4458. Disconnect BCM C2280B. Measure:

Click to display connectors

Positive Lead	Measurement / Action	Negative Lead
C4458-2		Ground

Is any voltage present?

Yes	REPAIR the circuit.
No	GO to V3

Source reference 1415

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.