Toyota Venza: How To Proceed With Troubleshooting

Toyota Venza Service Manual / Sliding Roof / Convertible / Sliding Roof System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

Use these procedure to troubleshoot the sliding roof 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.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check if the CAN communication system is functioning normally.

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

GO TO CAN COMMUNICATION SYSTEM

5.	CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) Using the Techstream, check if the LIN communication system is functioning normally (See page ).

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

GO TO LIN COMMUNICATION SYSTEM

6.	CHECK FOR DTC (SLIDING ROOF ECU)**

(a) Clear the DTCs (See page ).

(b) Recheck for DTCs.

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

GO TO DIAGNOSTIC TROUBLE CODE CHART

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) Operation Check (See page )

(b) Terminals of ECU (See page )

9.	CONFIRMATION TEST

END

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