Pinpoint Test A : The HUD (Head Up Display) Is Inoperative: Notes

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

Normal Operation and Fault Conditions

See HUD Module component description. Refer to: Head Up Display (HUD) - System Operation and Component Description .

The HUD receives a hot at all times voltage from the BCM. The HUD receives the ignition status message for the RUN/START or ACC input from the BCM through the GWM over the HS-CAN3.

Possible Sources

Fuse
Communication concern
RH lower steering wheel switch
HUD calibration
GWM concern
SCCM concern
IPC concern
HUD module

Visual Inspection and Diagnostic Pre-checks

Verify the BCM fuse 9 (10A) is OK.