Toyota Tundra Service Manual: System Diagram

SYSTEM DIAGRAM

Communication table:

Sender	Receiver	Signal	Line
Main Body ECU	Combination Meter	Front Door Courtesy Light Switch	CAN
Main Body ECU	Combination Meter	Unlock Warning Switch	CAN

Toyota Tundra Service Manual > Engine Immobiliser System (w/o Smart Key System): Engine does not Start because No Initial Combustion
DESCRIPTION When a key is inserted into the ignition key cylinder, the transponder key coil receives the key ID code and sends it to the transponder key ECU assembly. If an error in communication between the transponder key coil and transponder key ECU assembly occurs, this symptom may occur. WIRING ...

Toyota Tundra Owners Manual