Toyota Tundra Service Manual: Data List / Active Test




Using the Techstream to read the Data List allows the values or states of switches, sensor, actuators and other items to be read without removing any parts. This non-intrusive inspection can be very useful because intermittent conditions or signals may be discovered before parts or wiring is disturbed. Reading the Data List information early in troubleshooting is one way to save diagnostic time.


In the table below, the values listed under "Normal Condition" are reference values. Do not depend solely on these reference values when deciding whether a part is faulty or not.

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body / Main Body / Data List.

(e) According to the display on tester, read the "Data List".

Main Body

Tester Display

Measurement Item/Range

Normal Condition

Diagnostic Note

Key Unlock Warning SW

Unlock warning switch signal / ON or OFF

ON: Key is in ignition key cylinder

OFF: No key is in ignition key cylinder


D Door Courtesy SW

Front door courtesy light switch LH signal / ON or OFF

ON: Driver side door is open

OFF: Driver side door is closed


    Customize Parameters

    How To Proceed With Troubleshooting

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