5A
CAN Communication System Description (M13A Model with VVT)
CAN communication system uses the serial communication in which data is transmitted at a high speed. It uses a twisted pair of two communication lines for the high-speed data transmission. As one of its characteristics, multiple control modules can communicate simultaneously. In addition, it has a functionality to detect a communication error automatically. Each module reads necessary data from the received data and transmits data.
Communication of ECM and TCM is established by CAN.
TCM Transmission Data to ECM
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Torque down ignition delay request
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Transmission torque converter clutch mode
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Transmission turbine angular velocity
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Transmission emissions related malfunction active
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Slope mode
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Transmission gear selector position
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Transmission actual gear
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Transmission oil temperature
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Drive signal
TCM Reception Data from ECM
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Engine torque driver requested
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Engine speed
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Top gear inhibit
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Torque converter clutch control inhibit
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Throttle position
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Ignition timing advance for #1 cylinder
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Vehicle speed
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Engine coolant temperature
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Brake pedal switch active
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Air conditioning compressor clutch engaged