Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VKGS
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: LIGHTING (EXT): STOP LIGHT SWITCH: ON-VEHICLE INSPECTION; 2016 - 2020 MY Sienna [12/2015 -        ]

ON-VEHICLE INSPECTION

PROCEDURE

1. INSPECT STOP LIGHT SWITCH ASSEMBLY (for LED Type Stop Light)

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

(b) Inspect the voltage.

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

Text in Illustration

*a

Front view of wire harness connector

(to Stop Light Switch Assembly)

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

A59-1 (B) - A59-3 (GND)

Ignition switch off

11 to 14 V

A59-5 (B) - A59-3 (GND)

Ignition switch ON (IG)

11 to 14 V

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

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

Standard Resistance:

Tester Connection

Switch Condition

Specified Condition

A59-3 (GND) - Body ground

Always

Below 1 Ω

(d) Reconnect the connector to the stop light switch assembly.

(e) Inspect the voltage.

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

Text in Illustration

*a

Component with harness connected

(Stop Light Switch Assembly)

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

A59-2 (L) - A59-3 (GND)

Ignition switch off, brake pedal not depressed

Below 1 V

A59-2 (L) - A59-3 (GND)

Ignition switch off, brake pedal depressed

11 to 14 V

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