Climate Control

U1000 CAN COMM CIRCUIT

Description

CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle multiplex communication system with high data communication speed and excellent error detection ability.
Many electronic control units are equipped onto vehicles, 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. Refer to
"CAN COMMUNICATION SYSTEM : CAN Communication Signal Chart" CAN Communication Signal Chart.


DTC Logic


DTC DETECTION LOGIC







DTC CONFIRMATION PROCEDURE


1. PERFORM SELF-DIAGNOSIS

With CONSULT
1.Turn ignition switch ON and wait for 2 seconds or more.
2.Using CONSULT, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
3.Check if any DTC No. is displayed in the self-diagnosis results.
Is DTC detected?
YES- Refer to "Diagnosis Procedure" .
NO- Refer to "Intermittent Incident" Intermittent Incident.


Diagnosis Procedure


1. CHECK CAN COMMUNICATION SYSTEM

Check CAN communication system. Refer to "Trouble Diagnosis Flow Chart" Trouble Diagnosis Flow Chart.
- Inspection End.
Revision: March 20122013 Infiniti JX