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 > Occupant Classification System: Occupant Classification Sensor Power Supply Circuit Malfunction (B1793)
    DESCRIPTION The occupant detection sensor power supply circuit consists of the occupant classification ECU and the occupant detection sensors. DTC B1793 is set when a malfunction is detected in the occupant detection sensor power supply circuit. DTC Code DTC Detection Condition Trouble Area B1793 On ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2026 Copyright www.ttundra.com
    0.0318