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Pinpoint Test E : C1132:4B: Notes

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C1132:4B 

Refer to Vehicle Emergency Messaging System 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.

Possible Sources