Toyota Tundra Service Manual: System Diagram

SYSTEM DIAGRAM

Transmitting ECU (Transmitter)	Receiving ECU	Signal	Communication Method
Skid control ECU	4 wheel drive control ECU	Wheel speed sensor error signal Wheel speed signal Vehicle wheel sensor power supply decline status signal Vehicle speed signal	CAN communication system
ECM	4 wheel drive control ECU	Shift position P signal Shift position N signal	CAN communication system
4 wheel drive control ECU	Combination meter assembly	4WD indicator ON and flashing request signal L4 indicator ON and flashing request signal Buzzer sound demand signal	CAN communication system
4 wheel drive control ECU	Skid control ECU	Motor energizing signal 4WD status signal L4 status signal	CAN communication system
4 wheel drive control ECU	ECM	Cruise control cancel request signal 4WD status signal	CAN communication system

Toyota Tundra Service Manual > Navigation System: Disc cannot be Inserted or is Ejected Right After Insertion
PROCEDURE 1. CHECK IF A PROPER DISC IS INSERTED (a) Make sure that the disc is an audio disc or a disc with an MP3, WMA or AAC file, and that it is not deformed, flawed, stained, deteriorated or otherwise defective. OK: Disc is normal. HINT: Translucent or uniquely-shaped CDs cannot be played. CDs w ...

Toyota Tundra Owners Manual