Inspection [07/2020 - ]: Procedure

INSPECT HEADUP DISPLAY SWITCH (NO. 3 COMBINATION SWITCH ASSEMBLY)

Remove the headup display switch (No. 3 combination switch assembly).
Refer to REMOVAL [07/2020 - ]

Check the resistance.

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

Standard Resistance

Tester Connection	Switch Condition	Specified Condition
5 (ILU) - 15 (CH)	HUD switch not pressed	10 kΩ or higher
5 (ILU) - 15 (CH)	HUD switch pressed	Below 1 Ω

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	HUD Switch
*a	Component without harness connected (Headup Display Switch (No. 3 Combination Switch Assembly))

If the result is not as specified, replace the headup display switch (No. 3 combination switch assembly).

Check illumination.

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

Measurement Condition	Specified Condition
Battery positive (+) → Terminal 7 (ILL+) Battery negative → Terminal 12 (ILL-)	Illuminates

*a	Component without harness connected (Headup Display Switch (No. 3 Combination Switch Assembly))

If the result is not as specified, replace the headup display switch (No. 3 combination switch assembly).

Install the headup display switch (No. 3 combination switch assembly).
Refer to INSTALLATION [07/2020 - ]