Toyota Tundra Service Manual: Data List / Active Test

DATA LIST / ACTIVE TEST

1. ACTIVE TEST

HINT:

Using the Techstream to perform the Active Tests allows relays, VSVs and actuators and other items to be operated without removing any parts. This non-intrusive functional inspection can be very useful because intermittent operation may be discovered before parts or wiring is disturbed. Performing Active Tests early in troubleshooting is one way to save diagnostic time. Data List information can be displayed while performing Active Tests.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Air Conditioner / Active Test.

(e) According to the display on the Techstream, perform the "Active Test".

Air Conditioner

Tester Display

Test Part

Control Range

Diagnostic Note

Defogger Relay (Rear)

Defogger relay

ON or OFF

-

    Window Defogger System

    How To Proceed With Troubleshooting

    See More:

    Toyota Tundra Service Manual > Touch Select 2-4 And High-low System: System Description
    SYSTEM DESCRIPTION 1. DESCRIPTION A part-time 2-speed WF1AM transfer uses a touch select 2-4 and high-low system, enabling the driver to switch between 2WD, 4H and 4L modes by turning the transfer position switch. Through these switch signals, the 4 wheel drive control ECU actuates the shift motor i ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2026 Copyright www.ttundra.com
    0.0312