Toyota Tundra Service Manual: Inspection

Toyota Tundra Service Manual / Vehicle Interior / Lighting / Headlight Leveling Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT HEADLIGHT LEVELING SWITCH

(a) Check the voltage.

(1) Connect the battery positive (+) lead to terminal 1 (B) and the negative (-) lead to terminal 5 (E).

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

1 (B) - 2 (T)

0

10.4 to 11.2 V

1

8.52 to 9.24 V

2

6.6 to 7.32 V

3

4.68 to 5.40 V

4

2.76 to 3.48 V

5

0.84 to 1.56 V

If the result is not as specified, replace the headlight leveling switch.

Text in Illustration

*a

Component without harness connected

(Headlight Leveling Switch)

(b) Check the illumination.

(1) Apply battery voltage to the connector and check the illumination condition.

OK:

Measurement Condition

Specified Condition

Battery positive (+) → Terminal 3 (ILL+)

Battery negative (-) → Terminal 4 (ILL-)

Illuminates

If the result is not as specified, replace the headlight leveling switch.

Text in Illustration

*a

Component without harness connected

(Headlight Leveling Switch)
    Components

    Installation

    See More:

    Toyota Tundra Service Manual > Engine Immobiliser System (w/o Smart Key System): Antenna Coil Open / Short (B2784)
    DESCRIPTION When an open or short circuit is detected in the transponder key amplifier built into the transponder key ECU assembly, the transponder key ECU assembly stores this DTC. DTC No. Detection Item DTC Detection Condition Trouble Area Note B2784 Antenna Coil Open / Short The antenna coil in t ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2026 Copyright www.ttundra.com
    0.0391