Your Vehicle: 2009 Nissan-Datsun Altima V6-3.5L (VQ35DE)
 
Vehicle » A L L Diagnostic Trouble Codes ( DTC ) » Testing and Inspection » U Code Charts » U1000 » Security System » Coupe  
 
 
  Coupe  
 

U1000 CAN COMM CIRCUIT

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, refer to See: Powertrain Management\Computers and Control Systems\Information Bus\Application and ID\CAN Communication Signal Chart.

DTC Logic

DTC DETECTION LOGIC

  

Diagnosis Procedure
1.PERFORM SELF DIAGNOSTIC

  1. Turn ignition switch ON and wait for 2 second or more.
  2. Check "Self Diagnostic Result". Is "CAN COMM CIRCUIT" displayed?

YES >> Refer to See: Powertrain Management\Computers and Control Systems\Information Bus\Description and Operation\CAN Communication System\CAN Communication Control Circuit.
NO >> Refer to See: Testing and Inspection\Initial Inspection and Diagnostic Overview\Service Information For Electrical Incident\Intermittent Incident.