Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Indicator Circuit

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Engine / Cruise Control / Lane Departure Alert System (w/ Steering Control)(for Gasoline Model) / Indicator Circuit

DESCRIPTION

The forward recognition camera sends indicator illumination request signals to the combination meter assembly via CAN communication.

PROCEDURE

1.	READ VALUE USING TECHSTREAM (CAN BUS CHECK)

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: System Select / Can Bus Check.

CAN Bus Check

Result	Proceed to
All of the ECUs and sensors that are currently connected to the CAN communication system are displayed	A
None of the ECUs and sensors that are currently connected to the CAN communication system are displayed, or some of them are not displayed	B

GO TO CAN COMMUNICATION SYSTEM

2.	CHECK FOR DTCs (HEALTH CHECK)

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: System Select / Health Check.

(e) Check DTCs.

(f) Turn the engine switch off.

Result	Proceed to
No DTCs are output.	A
DTCs are output.	B

GO TO DTC CHART

3.	PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Body Electrical / Combination Meter / Active Test.

(e) According to the display on the Techstream, perform the Active Test.

Body Electrical > Combination Meter > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Multi Display All (White)	Multi-information display (White display)	ON	-

Body Electrical > Combination Meter > Active Test

Tester Display
Multi Display All (White)

(f) Turn the engine switch off.

Result	Proceed to
The multi-information display in the combination meter assembly turns on according to the operation of the Active Test.	A
The multi-information display in the combination meter assembly does not turn on according to the operation of the Active Test.	B

GO TO METER / GAUGE SYSTEM

4.	READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

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

(d) Enter the following menus: Chassis / LKA/LDA / Data List.

(e) Read the Data List according to the display on the Techstream.

Chassis > LKA/LDA > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

LDA Control

Control status of lane departure alert system (w/ steering control)

Prohibit or Permit

Prohibit: Control prohibited

Permit: Control permitted

Chassis > LKA/LDA > Data List

Tester Display
LDA Control

Result	Proceed to
The lane departure alert indicator illuminates and turns on according to the operation of the lane departure alert main switch	A
The lane departure alert indicator does not illuminate but the Data List item LDA Control changes according to the operation of the lane departure alert main switch	B
The lane departure alert indicator does not illuminate and the Data List item LDA Control does not change according to the operation of the lane departure alert main switch	C

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

REPLACE COMBINATION METER ASSEMBLY

REPLACE FORWARD RECOGNITION CAMERA

How To Proceed With Troubleshooting

Operation Check

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Indicator Circuit

How To Proceed With Troubleshooting

Operation Check

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