Inspection [10/2014 - ]: Procedure

INSPECT HEADUP DISPLAY SWITCH ASSEMBLY

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)

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 off (Not pushed)	100 kΩ
10 (ILD) - 6 (CH)	HUD switch off (Not pushed)	100 kΩ
12 (ILU) - 6 (CH)	HUD switch on (Pushed)	Below 1 Ω
10 (ILD) - 6 (CH)	HUD switch on (Pushed)	100 kΩ
12 (ILU) - 6 (CH)	TILT switch (UP) on (Pushed)	100 kΩ
10 (ILD) - 6 (CH)	TILT switch (UP) on (Pushed)	3210 Ω
12 (ILU) - 6 (CH)	TILT switch off (Not pushed)	100 kΩ
10 (ILD) - 6 (CH)	TILT switch off (Not pushed)	100 kΩ
12 (ILU) - 6 (CH)	TILT switch (DOWN) on (Pushed)	100 kΩ
10 (ILD) - 6 (CH)	TILT switch (DOWN) on (Pushed)	1010 Ω
12 (ILU) - 6 (CH)	RHEOSTAT switch (ILL UP) on (Pushed)	100 kΩ
10 (ILD) - 6 (CH)	RHEOSTAT switch (ILL UP) on (Pushed)	330 Ω
12 (ILU) - 6 (CH)	RHEOSTAT switch off (Not pushed)	100 kΩ
10 (ILD) - 6 (CH)	RHEOSTAT switch off (Not pushed)	100 kΩ
12 (ILU) - 6 (CH)	RHEOSTAT switch (ILL DOWN) on (Pushed)	100 kΩ
10 (ILD) - 6 (CH)	RHEOSTAT switch (ILL DOWN) on (Pushed)	Below 1 Ω
12 (ILU) - 6 (CH)	DISP switch off (Not pushed)	100 kΩ
10 (ILD) - 6 (CH)	DISP switch off (Not pushed)	100 kΩ
12 (ILU) - 6 (CH)	DISP switch on (Pushed)	330 Ω
10 (ILD) - 6 (CH)	DISP switch on (Pushed)	100 kΩ

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

Check the illumination.

Apply battery voltage to the connector and check the illumination condition.

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)