Pinpoint Test Ar : The Head Up Display (HUD) Module Does Not Respond To The Diagnostic Scan Tool: Notes

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

Refer to Module Communications Network for schematic and connector information.

Normal Operation and Fault Conditions

The LED HUD module communicates with the diagnostic scan tool through the HS-CAN2.

The driver information HUD module communicates on the HS-CAN3 and communicates with the diagnostic scan tool through the HS-CAN2. Diagnostic messages are sent/received through the HS-CAN2 circuits at the DLC, and are translated through the GWM to the HS-CAN3.

Possible Sources

Fuse
Wiring, terminals and connector
HUD module

Visual Inspection and Diagnostic Pre-checks

For LED HUD, verify BCM fuse 19 (5A) without stop/start, or BJB fuse 34 (10A) (with stop/start) is OK.

For driver information HUD, verify BCM fuse 31 (15A) is OK.