Toyota Venza: How To Proceed With Troubleshooting

Toyota Venza Service Manual / Door Lock / Key Reminder Warning System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use the following procedure to troubleshoot the key reminder warning system.
*: Use the Techstream.

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.	INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, inspect the CAN communication function to ensure that there are no malfunctions in the communication system.

Result	Proceed to
DTC is not output.	A
DTC is output.	B

GO TO CAN COMMUNICATION SYSTEM

5.	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 7

6.	OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Data List / Active Test (See page )

(b) Terminals of ECU (See page )

7.	REPAIR OR REPLACE

8.	CONFIRMATION TEST

END

System Description

SYSTEM DESCRIPTION 1. KEY REMINDER WARNING SYSTEM DESCRIPTION (a) When the driver side door is opened with the key in ACC or LOCK, this system causes a buzzer to sound in order to warn the driver ...

Operation Check

OPERATION CHECK 1. CHECK FUNCTION (a) Check that the key reminder warning buzzer sounds. (1) With the driver side door closed, insert the key into the ignition key cylinder and then make sure tha ...

Other materials about Toyota Venza:

Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" ...

Lost Communication with Power Source Control (B278C)
DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and power management control ECU stops for more than 10 seconds. DTC Code DTC Detection Condition Trouble Area ...

Hill-start assist control
Hill-start assist control helps to prevent the vehicle from rolling backwards when starting on incline or slippery slope. To engage hill-start assist control, further depress the brake pedal when the vehicle is stopped completely. A buzzer will sound o ...