Nissan Altima 2007-2012 Service Manual: U0140 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 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.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 3 seconds.
2. Check DTC.
Is DTC detected? YES >> EC-678, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
Go to LAN-16, "Trouble Diagnosis Flow Chart".
U0101 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 excellen ...
U1001 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 excelle ...
Other materials:
Inspection and adjustment
ECM RE-COMMUNICATING FUNCTION
Description
Performing following procedure can automatically perform re-communication of
ECM and BCM, but only when
the ECM has been replaced with a new one (*1).
*1: New one means an ECM which has never been energized on-board.
(In this step, initialization ...
Terminology
SAE J1930 Terminology List
All emission related terms used in this publication in accordance with SAE
J1930 are listed. Accordingly, new
terms, new acronyms/abbreviations and old terms are listed in the following
chart.
***: Not applicable ...
Diagnosis and repair workflow
Work Flow
OVERALL SEQUENCE
• Reference 1··· Refer to AV-289, "CONSULT - III Function (MULTI AV)".
• Reference 2··· Refer to AV-424, "Symptom Table".
DETAILED FLOW
1.CHECK SYMPTOM
Check the malfunction symptoms by performing the following items.
• Intervie ...