Toyota Avalon (XX50): Stop Light Switch

Components

COMPONENTS

ILLUSTRATION

*1

NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

*2

STOP LIGHT SWITCH ASSEMBLY

Installation

INSTALLATION

PROCEDURE

1. INSTALL STOP LIGHT SWITCH ASSEMBLY

(a) Insert the stop light switch assembly until the threaded sleeve hits the pedal as shown in the illustration.

*1

Stop Light Switch Mounting Adjuster

Insert in this Direction

NOTICE:

When inserting the stop light switch assembly, support the pedal from behind so that the pedal is not pushed in.

(b) Turn the stop light switch assembly 1/4 clockwise as shown in the illustration to install it.

*a

Protrusion of the Plunger

Turn in this Direction

Torque:

1.5 N·m {15 kgf·cm, 13 in·lbf}

or less

NOTICE:

When inserting the stop light switch assembly, support the pedal from behind so that the pedal is not pushed in.

(c) Connect the connector.

(d) Check the protrusion of the plunger.

Protrusion of the Plunger

Area

Measurement

a

0.5 to 2.6 mm (0.0236 to 0.102 in.)

(e) If the protrusion is not as specified, recheck the stop light switch assembly installation and perform brake pedal adjustment if necessary.

for Gasoline Model:

Click here

for HV Model:

Click here

NOTICE:

Do not depress or support the brake pedal.

2. INSTALL NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

Click here

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT STOP LIGHT SWITCH ASSEMBLY

*a

Front view of wire harness connector

(to Stop Light Switch Assembly)

(a) Disconnect the A33 stop light switch assembly connector.

(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A33-7 (B) - A33-2 (GND)

Always

11 to 14 V

A33-6 (B) - A33-2 (GND)

Power switch on (IG)*1

11 to 14 V

Engine switch on (IG)*2

  • *1: for HV Model
  • *2: for Gasoline Model

Standard Resistance:

Tester Connection

Condition

Specified Condition

A33-2 (GND) - Body ground

Always

Below 1 Ω

If the result is not as specified, repair or replace the wire harness or connector.

(c) Connect the A33 stop light switch assembly connector.

*a

Component with harness connected

(Stop Light Switch Assembly)

(d) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Condition

Specified Condition

A33-1 (OUT) - A33-2 (GND)

Power switch off, brake pedal not depressed*1

Below 1 V

Engine switch off, brake pedal not depressed*2

A33-1 (OUT) - A33-2 (GND)

Power switch off, brake pedal depressed*1

11 to 14 V

Engine switch off, brake pedal depressed*2

A33-3 (L) - A33-2 (GND)

Power switch off, brake pedal not depressed*1

Below 1 V

Engine switch off, brake pedal not depressed*2

A33-3 (L) - A33-2 (GND)

Power switch off, brake pedal depressed*1

11 to 14 V

Engine switch off, brake pedal depressed*2

A33-4 (ACC) - A33-2 (GND)

Always

11 to 14 V

A33-5 (L) - A33-2 (GND)

Power switch on (IG), brake pedal not depressed*1

11 to 14 V

Engine switch on (IG), brake pedal not depressed*2

A33-5 (L) - A33-2 (GND)

Power switch on (IG), brake pedal depressed*1

Below 1 V

Engine switch on (IG), brake pedal depressed*2

  • *1: for HV Model
  • *2: for Gasoline Model

If the result is not as specified, replace the stop light switch assembly.

Removal

REMOVAL

PROCEDURE

1. REMOVE NO. 1 INSTRUMENT PANEL UNDER COVER SUB-ASSEMBLY

Click here

2. REMOVE STOP LIGHT SWITCH ASSEMBLY

(a) Disconnect the connector.

(b) Turn the stop light switch assembly counterclockwise as shown in the illustration and remove it.

Remove in this Direction

Side Turn Signal Light Assembly

Switch Housing

See More:

Toyota Avalon (XX50) 2019-2022 Owners Manual > Steps to take in an emergency: If a warning message is displayed
The multi-information display shows warnings of system malfunctions, incorrectly performed operations, and messages that indicate a need for maintenance. When a message is shown, perform the correction procedure appropriate to the message. Master warning light The master warning light also comes on ...

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

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