Toyota Venza: Window Defogger Wire

Toyota Venza Service Manual / Window / Glass / Window Defogger Wire

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. CHECK REAR WINDOW DEFOGGER SYSTEM OPERATION

(a) When the ignition switch is turned to ON and the rear window defogger switch is pressed, check that the rear window defogger system operates.

2. INSPECT BACK DOOR GLASS (REAR WINDOW DEFOGGER WIRE)

NOTICE:

When cleaning the glass, wipe the glass along the wire using a soft and dry cloth. Take care not to damage the wires.
Do not use detergents or glass cleaners that have abrasive ingredients.
When measuring voltage, wrap a piece of tin foil around the tip of the negative tester probe and press the foil against the wire with your finger, as shown in the illustration.

(a) Turn the ignition switch to ON.

(b) Turn the rear window defogger switch on.

Result:

Voltage	Criteria
4 to 6 V	Wire is not broken
11 to 14 V	Wire is broken between the center and battery side end
Below 1 V	Wire is broken between the center and ground side end

HINT:

If the voltage is 11 to 14 V, the wire may be faulty between the center of the wire and the wire end on the battery side. If the voltage is below 1 V, the wire may be faulty between the center of the wire and the wire end on the ground side.

(d) Place a positive (+) lead of the voltmeter against the rear window defogger wire on the battery side.

(e) Place a negative (-) lead of the voltmeter with the foil strip against the wire on the ground side.

(f) Slide the positive (+) lead from the battery side to the ground side. The point where the voltage drops to below 1 V from 11 to 14 V is the place where the rear window defogger wire is broken.

HINT:

If the rear window defogger wire is not broken, the voltmeter should indicate 11 to 14 V at the battery side. When the positive (+) lead slides to the ground side, the voltage gradually decreases to below 1 V.

Repair

REPAIR

PROCEDURE

1. REPAIR REAR WINDOW DEFOGGER WIRE

(a) Clean the broken wire tips with a grease, wax and silicone remover.

(b) Place masking tape along both sides of the wire.

(d) Using a fine tip brush, apply a small amount of the agent to the wire.

(e) After a few minutes, remove the masking tape.

NOTICE:

Do not repair the rear window defogger wire again for at least 24 hours.

Rear Window Defogger System does not Operate

DESCRIPTION When the rear window defogger switch on the air conditioning control assembly is pressed, the operation signal is transmitted to the air conditioning amplifier assembly through the LI ...

Windshield Deicer System

...

Other materials about Toyota Venza:

Driving assist systems
To help enhance driving safety and performance, the following systems operate automatically in response to various driving situations. Be aware, however, that these systems are supplementary and should not be relied upon too heavily when operating the veh ...

Rear Airbag Sensor LH Circuit Malfunction (B1635/24)
DESCRIPTION The side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH) is composed of the center airbag sensor assembly, rear airbag sensor LH and side airbag sensor LH. ...

Multi-information display (LCD type)
The multi-information display presents the driver with a variety of driving-related data, including the clock and current outside temperature. • Clock Indicates and sets the time. • Outside temperature Indicates the outside temperature. The temper ...