Toyota Venza: System Description

Toyota Venza Service Manual / Window / Glass / Window Defogger System / System Description

SYSTEM DESCRIPTION

1. GENERAL

The rear window defogger wires are attached to the inside of the rear window and defog the window surface quickly by pressing the rear window defogger switch on the air conditioning control assembly. The indicator light is illuminated while the system is operating. The system automatically turns off after approximately 15 minutes.

HINT:

The rear window defogger is linked with the mirror heater and windshield deicer.
If both of the following conditions are met after approximately 15 minutes from the rear window defogger was activated, the rear window defogger continues to operate up to 45 minutes. If any of the following conditions are not met, the rear window defogger stops operating immediately.
- The outside temperature is 0°C (32 °F) or below.
- The vehicle speed is 60 km/h (37 mph) or more.

2. FUNCTION OF MAIN COMPONENT

Component	Outline
RR DEF Relay	Receives rear window defogger activation request signal from the air conditioning amplifier assembly and supplies power to the rear window defogger.
Rear Window Defogger Wire	Receives power from the RR DEF relay and heats the window using the rear window defogger wires.

Precaution

PRECAUTION NOTICE: When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Proc ...

System Diagram

SYSTEM DIAGRAM Communication Table Transmitting ECU Receiving ECU Signal Communication Method Air Conditioning Control Assembly ...

Other materials about Toyota Venza:

Data List / Active Test
DATA LIST / ACTIVE TEST 1. DATA LIST NOTICE: In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not. HINT: Using the T ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT FLUID LEVEL (a) Check the fluid level. Text in Illustration *1 MAX Line *2 MIN Line HINT: If brake ...

Inspection
INSPECTION PROCEDURE 1. INSPECT STARTER ASSEMBLY NOTICE: These tests must be performed within 3 to 5 seconds to avoid burning out the coil. (a) Perform a pull-in test. (1) Remove the nut and disconnect the lead wire from terminal C. (2) Con ...