Nissan Altima 2007-2012 Service Manual: Can communication
System 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.
Refer to LAN-25, "CAN Communication Signal Chart", about CAN communication for detail..
Automatic speed control device
(ASCD)
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating ins ...
Cooling fan control
System Diagram
System Description
INPUT/OUTPUT SIGNAL CHART
*1: The ECM determines the start signal status by the signals of engine speed
and battery voltage.
*2: This signal is sent to ...
Other materials:
Audio system voice commands
To access the audio system voice commands:
1. Press the button.
2. Say “Audio”
3. Speak a command from the following available
commands:
● Play (AM, FM, etc.)
Allows user to select radio band
● Tune AM (number)
Allows user to tune directly to a desired AM
frequency
● ...
P0725 engine speed signal
Description
The engine speed signal is transmitted from ECM to TCM by CAN communication
line.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn
ig ...
Front passenger side power window
alone does not operate
Diagnosis Procedure
1. CHECK POWER WINDOW AND DOOR LOCK/UNLOCK SWITCH RH
Check power window and door lock/unlock switch RH.
Refer to PWC-108, "FRONT POWER WINDOW SWITCH : Component Function Check".
Is the inspection result normal?
YES >> GO TO 2
NO >> Repair or repla ...