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04-25-2007, 05:26 PM
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| 2007 Tundra Can Bus (Controller Area network) ............Or how the Tundra talks to itself. I've been going thru the manual and I thought this was something you all should know about. The system is pretty complicated (Boring) so I just included the stuff that most owners should understand when things go bad. The CAN (Controller Area Network) is a serial data communication system for real time application. It is a vehicle multiplex(simultaneous communication of two or more messages on the same wire or radio channel) communication system which has a high communication speed (500 kbps, 250 kbps) and the ability to detect malfunctions and does this by pairing the CANH and CANL bus lines, the CAN performs communication based on differential voltages. Many ECUs (sensors) installed on the vehicle operate by sharing information and communicating with each other and are as follows. ECM Steering angle sensorSkid control ECU with actuator Combination meter ECU Center airbag sensor Air conditioning amplifier Bus buffer ECU 1 4WD control ECU 2 Main body ECU Front power seat ECU and switch LH 3 Outer mirror control ECU 3 Multiplex tilt and telescopic ECU 3 Note: 1: w/ Bus Buffer ECU 2: w/ 4WD 3: w/ Seat Memory DIAGNOSTIC CODES FOR CAN COMMUNICATION U1115, B1499, and B2621SYSTEM U0073, U0100, U101, U0114, U0123, U0124, U0126, U0129, U0199, U0208, U1002,
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