Toyota Venza: How To Proceed With Troubleshooting

Toyota Venza Service Manual / Window / Glass / Windshield Deicer System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the windshield deicer system.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.

The following 5 items are important points in the problem analysis:

What	Vehicle model, system name
When	Date, time, occurrence frequency
Where	Road conditions
Under what conditions?	Driving conditions, weather conditions
How did it happen?	Problem symptoms

3.	INSPECT BATTERY VOLTAGE

(a) Measure the battery voltage.

Standard Voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

4.	PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table (See page ).

Result	Proceed to
Fault is not listed in Problem Symptoms Table.	A
Fault is listed in Problem Symptoms Table.	B

GO TO STEP 6

5.	OVERALL ANALYSIS AND TROUBLESHOOTING

(a) Terminals of ECU (See page ).

6.	REPAIR OR REPLACE

7.	CONFIRMATION TEST

END

System Diagram

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

System Description

SYSTEM DESCRIPTION 1. GENERAL The windshield deicer system's thin heater wires are attached to the inside of the front window and deice the window surface quickly. The indicator light illumina ...

Other materials about Toyota Venza:

Seat Memory Switch
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE FRONT DOOR INSIDE HANDLE BEZEL PLUG LH 2. REMOVE POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY WITH FRONT DOOR ARMREST BASE PANEL 3. REMOVE COURTESY LIGHT ASSEMBLY ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. CHECK POWER SOURCE MODE CHANGE FUNCTION (a) Check the function of the engine switch. (1) Check that power source mode changes in accordance with the conditions of the shift position and brake pedal. Brake Pe ...

System Description
SYSTEM DESCRIPTION 1. WIRELESS DOOR LOCK CONTROL SYSTEM The wireless door lock control system functions to lock and unlock all the doors from a distance. The system is controlled by a door control transmitter which sends radio waves to the door control r ...