Communication with Scan Tool

K-line or CAN line is used for communication between each control module and scan tool. Refer to DIAGNOSIS COMMUNICATION TABLE to determine which line is used for communication between each control module and scan tool.
ECM, TCM (A/T model), ABS/ESP® control module, BCM, SDM (advanced air bag model) and HVAC control module use CAN line for communication with scan tool. Even if CAN line has a trouble other than between DLC and BCM, communication may also fail between scan tool and these control modules.
4WD control module (motor-shift type 4WD model) use K-line for communication with scan tool. Even if CAN line has a trouble, it is possible to communicate between scan tool and this control module.