Toyota Tundra Service Manual: System Description

Toyota Tundra Service Manual / Vehicle Interior / Door Lock / Key Reminder Warning System / System Description

SYSTEM DESCRIPTION

1. KEY REMINDER WARNING SYSTEM DESCRIPTION

(a) When the driver side door is opened with the ignition key in the ACC or LOCK position, this system causes a buzzer to sound in order to warn the driver that the ignition key has not been removed.

2. FUNCTION OF MAIN COMPONENT

Component	Function
Front Door Courtesy Switch LH	Detects front door status (open or closed) and outputs signal to main body ECU
Unlock Warning Switch	Detects if key is inserted into ignition key cylinder or not and outputs signal to main body ECU
Combination Meter	Receives buzzer request signal from main body ECU after main body ECU receives ignition switch signal and front door courtesy light switch signal, and actuates inner circuit to sound built-in buzzer intermittently

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 Service Manual: System Description

Problem Symptoms Table

System Diagram

See More:

Toyota Tundra Owners Manual

Toyota Tundra Service Manual