Toyota Tundra Service Manual: Stop Light Control Relay

On-vehicle Inspection

ON-VEHICLE INSPECTION

PROCEDURE

1. CHECK STOP LIGHT CONTROL RELAY

(a) Remove the stop light control relays (BRK NO. 1) from the engine room relay block.

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

Standard resistance:

for BRK NO. 1

Tester Connection

Condition

Specified Condition

3 - 4

When battery voltage is not applied to terminals 1 and 2

10 kΩ or higher

3 - 5

When battery voltage is not applied to terminals 1 and 2

Below 1 Ω

3 - 4

When battery voltage is applied to terminals 1 and 2

10 kΩ or higher

3 - 5

When battery voltage is applied to terminals 1 and 2

Below 1 Ω

If the result is not as specified, replace the relay.

(c) Install the stop light control relays (BRK NO. 1).

    Removal

    Trailer Brake Control Ecu

    See More:

    Toyota Tundra Service Manual > Front Seat Side Airbag Assembly(for Manual Seat): Removal
    REMOVAL CAUTION / NOTICE / HINT CAUTION: Be sure to read Precaution thoroughly before servicing (See page ). If the side airbag was deployed, replace the front seat airbag assembly LH, front seat back cover and front seat frame with adjuster assembly with the necessary parts in accordance with the e ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2025 Copyright www.ttundra.com
    0.0093