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

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Toyota Tundra Service Manual > Meter / Gauge System: Fuel Sender Open Detected (B1500)
DESCRIPTION This DTC is output when the combination meter detects the fuel sender gauge malfunction via the CAN. DTC Code DTC Detection Condition Trouble Area B1500 When combination meter detects fuel sender gauge malfunction Harness or connector Combination meter Fuel sender gauge Fuel suction with ...

Toyota Tundra Service Manual: System Description

Problem Symptoms Table

System Diagram

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Toyota Tundra Owners Manual

Toyota Tundra Service Manual