Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Hazard Warning Switch Circuit

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Exterior / Lighting (ext) / Lighting System(for Gasoline Model Without Cornering Light) / Hazard Warning Switch Circuit

DESCRIPTION

The combination meter assembly receives the hazard warning signal switch (radio and display receiver assembly) on signal and controls the operation of the hazard warning lights.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.

PROCEDURE

1.	READ VALUE 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 / Data List.

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

Body Electrical > Combination Meter > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Hazard Flasher Switch

Hazard warning signal switch signal

OFF or ON

OFF: Hazard warning signal switch off

ON: Hazard warning signal switch on

Body Electrical > Combination Meter > Data List

Tester Display
Hazard Flasher Switch

OK:

Normal conditions listed above are displayed.

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

2.	INSPECT HAZARD WARNING SIGNAL SWITCH (RADIO AND DISPLAY RECEIVER ASSEMBLY)

(a) Remove the hazard warning signal switch (radio and display receiver assembly).

Click here

(b) Inspect the hazard warning signal switch (radio and display receiver assembly).

Click here

REPLACE HAZARD WARNING SIGNAL SWITCH (RADIO AND DISPLAY RECEIVER ASSEMBLY)

3.	CHECK HARNESS AND CONNECTOR (HAZARD WARNING SIGNAL SWITCH (RADIO AND DISPLAY RECEIVER ASSEMBLY) - COMBINATION METER ASSEMBLY AND BODY GROUND)

(a) Disconnect the G15 combination meter assembly connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
G20-7 (TB) - G15-3 (HAZ)	Always	Below 1 Ω
G20-7 (TB) or G15-3 (HAZ) - Body ground	Always	10 kΩ or higher
G20-6 (GND) - Body ground	Always	Below 1 Ω

REPLACE COMBINATION METER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

Dtc Check / Clear

Headlight Dimmer Switch Circuit

See More:

Toyota Avalon (XX50) 2019-2022 Owners Manual > Using the driving support systems: BSM (Blind Spot Monitor)
Summary of the Blind Spot Monitor The Blind Spot Monitor is a system that has 2 functions; The BSM (Blind Spot Monitor) function Assists the driver in making a decision when changing lanes The RCTA (Rear Cross Traffic Alert) function Assists the driver when backing up These functions use same sensor ...