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U1010 CONTROL UNIT (CAN) SEC-17 < DTC/CIRCUIT DIAGNOSIS > C D E F G H I J L M A B SEC N O P U1010 CONTROL UNIT (CAN) Description INFOID:0000000009479034 CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul- tiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only. CAN Communication Signal Chart, refer to LAN-54, "CAN Communication Signal Chart" DTC Logic INFOID:0000000009479035 DTC DETECTION LOGIC Diagnosis Procedure INFOID:0000000009479036 1. REPLACE BCM When DTC [U1010] is detected, replace BCM. >> Replace BCM. Refer to BCS-49, "Removal and Installation" Special Repair Requirement INFOID:0000000009479037 1. REQUIRED WORK WHEN REPLACING BCM Initialize BCM. Refer to CONSULT Immobilizer mode and follow the on-screen instructions. >> Inspection End. DTC CONSULT display de- scription DTC Detection Condition Possible cause U1010 CONTROL UNIT (CAN) When detecting error during the initial diagnosis of CAN control- BCM |