GX 470 V8-4.7L (2UZ-FE) (2004)
Heated Mirror Switch: Testing and Inspection
INSPECT OUTER MIRROR HEATER SWITCH ASSEMBLY (W/ OUTER MIRROR HEATER)
a. Inspect operation of the defogger switch illumination.
Standard:
If the result is not as specified, replace the outer mirror heater switch assembly or bulb.
b. Inspect operation of the defogger timer.
1. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 3.
2. Connect the positive (+) lead from the battery to terminal 5 through a 1.4 W test bulb.
3. Push the outer mirror heater switch ON, check that the indicator light on the switch and the test blub light up for 5 minutes, and then the
indicator light and the test bulb go off.
If the result is not as specified, replace the outer mirror heater switch assembly.