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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 independently). In CAN communication, control units are connected with 2
communication lines (CAN-H, CAN-L) 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 "CAN System Specification Chart" CAN System Specification Chart.


DTC Logic


DTC DETECTION LOGIC








Diagnosis Procedure


1. PERFORM SELF-DIAGNOSTIC

1.Turn ignition switch ON and wait for 2 seconds or more.
2.Check "Self Diagnostic Result" of "MULTI AV".
Is "CAN COMM CIRCUIT" displayed?
YES- Refer to "LAN system". Refer to "Trouble Diagnosis Procedure" Trouble Diagnosis Procedure.
NO- Refer to GI section. Refer to "Intermittent Incident" Intermittent Incident.