Toyota Venza: How To Proceed With Troubleshooting

Toyota Venza Service Manual / Seat Belt / Seat Belt Warning System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedure to troubleshoot the seat belt 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, 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.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

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

GO TO CAN COMMUNICATION SYSTEM

5.	CHECK FOR DTC (AIRBAG SYSTEM)*

(a) Clear the DTCs (See page ).

(b) Recheck for DTCs.

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

GO TO AIRBAG SYSTEM

6.	CHECK FOR DTC (OCCUPANT CLASSIFICATION SYSTEM)*

(a) Clear the DTC (See page ).

(b) Recheck for DTCs.

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

GO TO OCCUPANT CLASSIFICATION SYSTEM

7.	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 9

8.	OVERALL ANALYSIS AND TROUBLESHOOTING*

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

(b) Terminals of ECU (See page ).

9.	REPAIR OR REPLACE

10.	CONFIRMATION TEST

END

System Diagram

SYSTEM DIAGRAM Communication Table Sender Receiver Signal Communication Method Center airbag sensor assembly Combination mete ...

Customize Parameters

CUSTOMIZE PARAMETERS 1. CUSTOMIZE FUNCTION WITH TECHSTREAM NOTICE: Be sure to record the current settings before customizing. These buzzers should be ON for safe driving. Perform these ...

Other materials about Toyota Venza:

Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS 1. CHECK FOR INTERMITTENT PROBLEMS HINT: A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected using the ECU Data List function of the Techstream. (a) ...

Light Control Switch Circuit
DESCRIPTION The main body ECU (driver side junction block assembly) receives the following switch information: Light control switch position off, tail, head or AUTO Dimmer switch position high, low or high flash (pass) Fog light switch posit ...

Radio Antenna Pole
Components COMPONENTS ILLUSTRATION Removal REMOVAL PROCEDURE 1. REMOVE ROOF ANTENNA POLE SUB-ASSEMBLY (a) Turn the roof antenna pole sub-assembly in the direction indicated by the arrow in the illustration to remove it. ...