System Description

WARNING: This page is about a different car, the 2010 Suzuki Kizashi. However, it is still accessible from the selected car via links, so may be relevant.

Communication for each control module and device is established through continuous input/output of ON/OFF digital signals with various data items being managed in parallel. Transmitting/receiving these data is called as serial communication interface.

Types of serial communication interface such as UART, CAN and LIN protocols (communication standards) have been adopted for in-car communication system.

UART is used for communication from keyless start control module to steering lock unit.

LIN is used for communication from keyless start control module to each front power window motor and power window master switch, for communication from combination meter to parking sensor system control module, and for communication from HVAC control module to auto A/C panel.

In addition, keyless start control module, BCM, ECM, TCM (CVT model), combination meter, P/S control module, HVAC control module, ESP® control module, 4WD control module (4WD model), SDM, steering angle sensor, and rain/light sensor are transmitted/received data through a twist pair of two communication lines (CAN High and CAN Low) connected through CAN communication. Data obtained by a specific control module can be shared with every control module.