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System Diagram

Fig 1: Cruise Control System Diagram
G05750559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Communication Table 

COMMUNICATION REFERENCE CHART

Sender Receiver Signal Line
ECM Combination Meter ECU (CRUISE Main Indicator Light) CRUISE main indicator operation signal BEAN
ECM TCM Shift up/down request signal CAN
TCM ECM Shift up/down response CAN