Inspection [10/2015 - ]: Procedure

INSPECT HEADUP DISPLAY SWITCH ASSEMBLY

Check the resistance.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
12 (ILU) - 6 (CH)	HUD switch not pressed	100 kΩ
10 (ILD) - 6 (CH)	HUD switch not pressed	100 kΩ
12 (ILU) - 6 (CH)	HUD switch pressed	Below 2 Ω
10 (ILD) - 6 (CH)	HUD switch pressed	100 kΩ
12 (ILU) - 6 (CH)	TILT switch (UP) pressed	100 kΩ
10 (ILD) - 6 (CH)	TILT switch (UP) pressed	3110 Ω
12 (ILU) - 6 (CH)	TILT switch not pressed	100 kΩ
10 (ILD) - 6 (CH)	TILT switch not pressed	100 kΩ
12 (ILU) - 6 (CH)	TILT switch (DOWN) pressed	100 kΩ
10 (ILD) - 6 (CH)	TILT switch (DOWN) pressed	1010 Ω
12 (ILU) - 6 (CH)	RHEOSTAT switch (UP) pressed	100 kΩ
10 (ILD) - 6 (CH)	RHEOSTAT switch (UP) pressed	329 Ω
12 (ILU) - 6 (CH)	RHEOSTAT switch not pressed	100 kΩ
10 (ILD) - 6 (CH)	RHEOSTAT switch not pressed	100 kΩ
12 (ILU) - 6 (CH)	RHEOSTAT switch (DOWN) pressed	100 kΩ
10 (ILD) - 6 (CH)	RHEOSTAT switch (DOWN) pressed	Below 2 Ω
12 (ILU) - 6 (CH)	DISP switch not pressed	100 kΩ
10 (ILD) - 6 (CH)	DISP switch not pressed	100 kΩ
12 (ILU) - 6 (CH)	DISP switch pressed	329 Ω
10 (ILD) - 6 (CH)	DISP switch pressed	100 kΩ

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	HUD Switch
*2	TILT Switch
*3	RHEOSTAT Switch
*4	DISP Switch
*a	Component without harness connected (Headup Display Switch Assembly)

If the result is not as specified, replace the headup display switch assembly.

Check illumination.

Apply battery voltage to the headup display switch assembly and check that it illuminates.

Measurement Condition	Specified Condition
Battery positive (+) → Terminal 1 (ILL+) Battery negative (-) → Terminal 8 (ILL-)	Illuminates

If the result is not as specified, replace the headup display switch assembly.

*a	Component without harness connected (Headup Display Switch Assembly)