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

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.

AR1 CHECK THE HUD (HEAD UP DISPLAY) MODULE VOLTAGE SUPPLY CIRCUITS FOR AN OPEN

Ignition OFF.

Disconnect: HUD Module C2395 (LED display) or C2877 (Driver Information display).

Ignition ON.

Measure:

LED Display

Positive Lead	Measurement / Action	Negative Lead
C2395-4	Courtesy of FORD MOTOR COMPANY	Ground

Driver Information Display

Positive Lead	Measurement / Action	Negative Lead
C2877-8	Courtesy of FORD MOTOR COMPANY	Ground

Is the voltage greater than 11 volts?

Yes

GO to AR2

For LED display, VERIFY BCM fuse 19 (5A) without stop/start, or BJB fuse 34 (10A) (with stop/start) is OK. For Driver Information display, VERIFY BCM fuse 31 (15A) is OK. If OK, REPAIR the circuit. If not OK, REFER to OEM ELECTRICAL WIRING DIAGRAM INTRODUCTION to identify the possible causes of the circuit short.

AR2 CHECK THE HUD (HEAD UP DISPLAY) MODULE GROUND CIRCUIT FOR AN OPEN

Ignition OFF.

Measure:

LED Display

Positive Lead	Measurement / Action	Negative Lead
C2395-1	Courtesy of FORD MOTOR COMPANY	Ground

Driver Information Display

Positive Lead	Measurement / Action	Negative Lead
C2877-4	Courtesy of FORD MOTOR COMPANY	Ground

Is the resistance less than 3 ohms?

Yes	For LED HUD, GO to AR3: For Driver Information HUD, GO to AR4

No	REPAIR the circuit.

AR3 CHECK THE HS-CAN2 (HIGH SPEED-CONTROLLER AREA NETWORK 2) CIRCUITS BETWEEN THE HUD (HEAD UP DISPLAY) MODULE AND THE DLC (DATA LINK CONNECTOR) FOR AN OPEN

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2395-3	Courtesy of FORD MOTOR COMPANY	C251-3
C2395-2	Courtesy of FORD MOTOR COMPANY	C251-11

Are the resistances less than 3 ohms?

Yes

GO to AR5

No	REPAIR the circuit in question.

AR4 CHECK THE HS-CAN3 (HIGH SPEED-CONTROLLER AREA NETWORK 3) CIRCUITS BETWEEN THE HUD (HEAD UP DISPLAY) MODULE AND THE GWM (GATEWAY MODULE A) FOR AN OPEN

Disconnect GWM C2803 .

Measure:

Positive Lead	Measurement / Action	Negative Lead
C2877-16	Courtesy of FORD MOTOR COMPANY	C2803-16
C2877-15	Courtesy of FORD MOTOR COMPANY	C2803-15

Are the resistances less than 3 ohms?

Yes

GO to AR5

No	REPAIR the circuit in question.

AR5 CHECK FOR CORRECT HUD (HEAD UP DISPLAY) MODULE OPERATION

Ignition OFF.

Disconnect and inspect the HUD module connector and related in-line connectors.

Repair:
- corrosion (install new connector or terminals - clean module pins)
- damaged or bent pins - install new terminals/pins
- pushed-out pins - install new pins as necessary

Reconnect the HUD module connector and related in-line connectors. Make sure they seat and latch correctly.

Operate the system and determine if the concern is still present.

Is the concern still present?

Yes	CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new HUD module. Refer to: HEAD UP DISPLAY (HUD) MODULE .

No	The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.