Security System Intelligent Key System

U1000 CAN COMM CIRCUIT





BCM : Description
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex 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. CAN Communication Signal Chart.




BCM : DTC Logic

DTC DETECTION LOGIC









BCM : Diagnosis Procedure
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check "Self Diagnostic Result".
Is DTC "U1000" displayed?
YES - Trouble Diagnosis Flow Chart.
NO - Intermittent Incident.




IPDM E/R IPDM E/R : Description
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex 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. CAN Communication Signal Chart.




IPDM E/R : DTC Logic

DTC DETECTION LOGIC









IPDM E/R : Diagnosis Procedure
1.PERFORM SELF DIAGNOSTIC
1. Turn the ignition switch ON and wait for 2 seconds or more.
2. Check "Self Diagnostic Result" of IPDM E/R.
Is "CAN COMM CIRCUIT" displayed?
YES - Trouble Diagnosis Flow Chart.
NO - Intermittent Incident.