Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Improper Operation

DESCRIPTION

In cases where the doors locked or unlocked by themselves even though a door lock or unlock operation was not performed, a vehicle malfunction, accidental operation by the customer or a passenger, or environmental factors should all be considered as a possible cause. By using the operation history, the possible causes of the malfunction can be narrowed down, enabling the problem to be solved by repair or replacement, or by explaining to the customer how environmental factors affect the operation.

CAUTION / NOTICE / HINT

NOTICE:

• If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
• The operation history function uses the current system time of the Techstream and the time counter inside the controlling ECU to calculate the times shown in the operation history. For this reason, before reading the operation history, first make sure that the Techstream system clock is accurately set to the current time.

PROCEDURE

(a) Confirm the vehicle symptoms.

B

GO TO STEP 5

A

(a) Use the Techstream to check the door lock operation history around the time the customer reported the malfunction to have occurred.

(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Main Body / Utility / Operation History.

(5) Read the Operation History according to the display on the Techstream.

(6) Check if there is operation history around the time that the customer reported the malfunction to have occurred, and perform an operation check.

Click here

B

END (VEHICLE MALFUNCTION)

C

GO TO STEP 4

A

(a) If the problem symptoms could not be reproduced, explain to the customer the details of the door lock operation history such as the signal timings of the multiplex network master switch assembly, key, etc.

Click here

OK:

Cause was identified

OK

END

NG

CHECK FOR INTERMITTENT PROBLEMS

(a) Use the Techstream to check the door unlock operation history around the time the customer reported the malfunction to have occurred.

(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Main Body / Utility / Operation History.

(5) Read the Operation History according to the display on the Techstream.

(6) Check if there is operation history around the time that the customer reported the malfunction to have occurred, and perform an operation check.

Click here

A

CHECK FOR INTERMITTENT PROBLEMS

B

END

(a) Use the Techstream to check the door unlock operation history around the time the customer reported the malfunction to have occurred.

(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Main Body / Utility / Operation History.

(5) Read the Operation History according to the display on the Techstream.

(6) Check if there is operation history around the time that the customer reported the malfunction to have occurred, and perform an operation check.

Click here

B

END

C

GO TO STEP 7

A

(a) If the problem symptoms could not be reproduced, explain to the customer the details of the door lock operation history such as the signal timings of the multiplex network master switch assembly, key, etc.

Click here

OK:

Cause was identified

OK

END

NG

CHECK FOR INTERMITTENT PROBLEMS

(a) Use the Techstream to check the door lock operation history around the time the customer reported the malfunction to have occurred.

(1) Connect the Techstream to the DLC3.

(2) Turn the engine switch on (IG).

(3) Turn the Techstream on.

(4) Enter the following menus: Body Electrical / Main Body / Utility / Operation History.

(5) Read the Operation History according to the display on the Techstream.

(6) Check if there is operation history around the time that the customer reported the malfunction to have occurred, and perform an operation check.

Click here

A

CHECK FOR INTERMITTENT PROBLEMS

B

END