DIESEL CONTROL SYSTEM
DTC U0001 CAN COMMUNICATION MALFUNCTION
Several control units are applied to electronically controlled vehicles. These units perform each control with informations
from various sensors. Thus, sharing signal information from sensors is needed, so CAN communication type whose com-
munication speed is high and insensitive to electrical noise by spark generation is adopted to controlling power-train(en-
gine, atutomatic transaxle, ABS, TCS, ECS)As sharing signals of engine speed, APS, engaged gear and torque reduction
through CAN communication, ECM and TCM modules control vehicle actively.
CAN 2.0 B communication format
NO. in box
U0001 is set when signal transmission through CAN communication line is impossible for more than 0.1 sec. because of
open or short to ground in CAN communication line. Checking CAN communication BUS and signals from ECM, TCM
module is required.