Toyota Tundra Service Manual: System Diagram

SYSTEM DIAGRAM

Communication Table

Transmitting ECU (Transmitter)	Receiving ECU	Signal	Communication Method
ECM	Combination Meter Assembly Cruise Control Indicator Cruise Control SET Indicator Multi-information Display	Cruise control indicator and cruise control SET indicator operation signal Control vehicle speed signal	CAN
Skid Control ECU (Brake Actuator Assembly)	ECM	Wheel speed signal Speed sensor power drop signal Speed sensor condition signal Cruise control cancel request signal Under VSC control signal Under TRAC control signal	CAN
4 Wheel Drive Control ECU*1	ECM	Cruise control cancel request signal	CAN
Trailer Brake Control ECU (Brake Control with Bracket Relay)*2	ECM	Cruise control cancel request signal	CAN

*1: for 4WD

*2: for Trailer Brake Control System

Toyota Tundra Service Manual > Occupant Classification System: Passenger Side Buckle Switch Circuit Malfunction (B1771)
DESCRIPTION The passenger side buckle switch circuit consists of the occupant classification ECU and the front seat inner belt RH. DTC B1771 is recorded when a malfunction is detected in the passenger side buckle switch circuit. Troubleshoot DTC B1771 first when DTCs B1771 and B1795 are output simul ...

Toyota Tundra Owners Manual