Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2001LANDCRUISER V8-4.7L (2UZ-FE)REPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - WINDOWS AND GLASSHEATED GLASS CONTROL MODULETESTING AND INSPECTION
2001 Toyota Landcruiser V8-4.7L (2UZ-FE)
Heated Glass Control Module: Testing and Inspection
2001 Toyota Landcruiser V8-4.7L (2UZ-FE)SECTION Testing and Inspection
INSPECT DEFOGGER TIMER OPERATION
a. Connect the positive (+) lead from the voltmeter to terminal 2, 12 and 42 of defogger switch connector and negative (-) lead to terminal 22.
b. When the switch is OFF, the voltage should be approx. 12 V.
c. Turn the defogger switch ON and check that the indicator lights up and that the voltage is less than 1 V.
d. After 15 minutes, check that the switch is OFF and the voltage is approx. 12 V.
If operation is not as specified, replace the switch.
INSPECT MIRROR HEATER TIMER OPERATION
a. Connect the positive (+) lead from the voltmeter to terminal 2, 12 and 51 of mirror heater switch connector and negative (-) lead to terminal 22.
b. When the switch is OFF, the voltage should be approx. 12 V.
c. Turn the mirror defogger switch ON and check that the indicator lights up and that the voltage is less than 1 V.
d. After 15 minutes, check that the switch is OFF and the voltage is approx. 12 V.
If operation is not as specified, replace the switch.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.