Collision Warning and Collision Avoidance System — 2016 workshop reference 6139

Using a diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs). Ignition OFF. Ignition ON. Wait 10 seconds. Using a diagnostic scan tool, perform the continuous memory self-test. Retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0146:00 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 HUD module. REFER to: Head Up Display (HUD) Module (419-03C Collision Warning and Collision Avoidance System, Removal and Installation).

C1132:4B

Refer to Wiring Diagrams Cell 136 for schematic and connector information.

Normal Operation and Fault Conditions

The HUD module is designed with a temperature sensor internal to the module. Due to extremely hot weather conditions, the temperature sensor circuit allows the HUD module to disable under high temperature conditions, which could damage the HUD module Light Emitting Diodes (LEDs). The HUD module is designed with a LED prove-out test. Upon each ignition cycle when the ignition switch is in RUN, the Light Emitting Diodes (LEDs) illuminate for a period of time indicating the HUD module is functional.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Conditions
	C1132:4B Head Up Display: Over Temperature	Sets as a continuous memory and on-demand DTC in the CCM if the HUD module is over-temperature.

DTC

Description

Fault Trigger Conditions

C1132:4B Head Up Display: Over

Temperature

Sets as a continuous memory and on-demand DTC in the CCM if the HUD module is over-temperature.

Possible Sources

HUD module

PINPOINT TEST E : C1132:4B

E1 CHECK THE COMMUNICATION NETWORK

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

Does the HUD module pass the network test?

Yes	GO to E2
No	REFER to: Communications Network (418-00 Module Communications Network) .

Source reference 6139

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.