Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001B1NH
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: LIGHTING (EXT): STOP LIGHT SWITCH: ON-VEHICLE INSPECTION; 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]

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.