With Monochrome Display

U1000 CAN COMM CIRCUIT

Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with two 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. How To Use CAN Communication Signal Chart.


DTC Logic


DTC DETECTION LOGIC








Diagnosis Procedure


1. CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT

1.Turn ignition switch ON and wait for 2 or more seconds.
2.Using CONSULT, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
Is "CAN COMM CIRCUIT" displayed?
YES- Perform trouble diagnosis for the CAN communication system. Trouble Diagnosis Flow Chart.
NO- Perform the intermittent malfunction diagnosis. Intermittent Incident.