Headup Display Malfunction [12/2023 - ]: Procedure

1. Check for DTCs.

   Body Electrical > Combination Meter > Trouble Codes 

   Result

   Result	Proceed to
   DTCs are not output	A
   DTCs are output	B

Result: 

B 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [12/2023 - ] 

Result: 

A 

See step  2

Refer to INSPECTION [11/2020 - ]

Result

Result: 

NG 

REPLACE HEADUP DISPLAY SWITCH (TRIP SWITCH). Refer to  REMOVAL [11/2020 - ] 

Result: 

OK 

See step  3

1. Disconnect the D200 combination meter assembly connector.
2. Disconnect the D7 headup display switch (trip switch) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   D200-27 (SW1) - D7-4 (ILU)	Always	Below 1 Ω
   D200-9 (E) - D7-2 (CH)	Always	Below 1 Ω
   D200-27 (SW1) or D7-4 (ILU) - Body ground	Always	10 kΩ or higher
   D200-9 (E) or D7-2 (CH) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  4

1. Check the problem symptoms.

   Result

   Result	Proceed to
   Display position abnormality	A
   Display screen abnormality	B

Result: 

B 

See step  8

Result: 

A 

See step  5

1. Perform the Active Test according to the display on the GTS.

   Body Electrical > Combination Meter > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   HUD Display Position	This test activates the operation of HUD Display Position	Up (+3), Up (+2), Up (+1), Center, Down (-1), Down (-2) or Down (-3)	-

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   HUD Display Position

   Result

   Result	Proceed to
   Active Test can be performed correctly	A
   Active Test cannot be performed correctly	B

Result: 

B 

REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

Result: 

A 

See step  6

1. Check that the meter mirror sub-assembly is correctly installed to the vehicle.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

INSTALL METER MIRROR SUB-ASSEMBLY 

Result: 

OK 

See step  7

1. Adjusts headup display position using the customize setting.

   Refer to CUSTOMIZE PARAMETERS [12/2023 - ]

   Result

   Result	Proceed to
   Problem symptoms disappear	A
   Problem symptoms do not disappear	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

1. Perform the Active Test according to the display on the GTS.

   Body Electrical > Combination Meter > Active Test 

   Tester Display	Measurement Item	Control Range	Diagnostic Note
   Color Test Screen (Black)	Headup display (Black color display)	ON	-
   Color Test Screen (White)	Headup display (White color display)	ON	-
   Color Test Screen (Red)	Headup display (Red color display)	ON	-
   Color Test Screen (Green)	Headup display (Green color display)	ON	-
   Color Test Screen (Blue)	Headup display (Green color display)	ON	-
   Color Test Screen (Color Bars)	Headup display (Color bars)	ON	-
   Liquid Crystal Display Backlight Brightness	This test activates the operation of Liquid Crystal Display Backlight Brightness	0 to 100%	-

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Color Test Screen (Black)

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Color Test Screen (White)

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Color Test Screen (Red)

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Color Test Screen (Green)

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Color Test Screen (Blue)

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Color Test Screen (Color Bars)

   Body Electrical > Combination Meter > Active Test 

   Tester Display
   Liquid Crystal Display Backlight Brightness

   Result

   Result	Proceed to
   Active Test can be performed correctly	A
   Active Test cannot be performed correctly	B

Result: 

B 

REPLACE METER MIRROR SUB-ASSEMBLY. Refer to  REMOVAL [12/2023 - ] 

Result: 

A 

See step  9

1. Adjusts headup display image using the customize setting.

   Refer to CUSTOMIZE PARAMETERS [12/2023 - ]

   Result

   Result	Proceed to
   Problem symptoms disappear	A
   Problem symptoms do not disappear	B

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2020 - ] 

Result: 

B 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2023 - ]