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:
Warning lamps/indicator lamps
System Diagram
System Description
OIL PRESSURE WARNING LAMP
The oil pressure warning lamp is controlled by the IPDM E/R (intelligent
power distribution module engine
room).
Low oil pressure causes the oil pressure switch to provide a ground signal to
the IPDM E/R. The IPDM E/R
then sig ...
Heated seats (if so equipped)
The front seats are warmed by built-in heaters.
1. Start the engine.
2. Push the LO or HI position of the switch, as
desired. The indicator light in the switch will
illuminate.
The heater is controlled by a thermostat,
automatically turning the heater on and off.
The indicator light w ...
Lifting point
Special Service Tool
The actual shapes of Kent-Moore tools may differ from those of special
service tools illustrated here.
CAUTION:
• Every time the vehicle is lifted up, maintain the complete vehicle curb
condition.
• Since the vehicle's center of gravity changes when removing main ...