Nissan Altima 2007-2012 Service Manual: U1010 control unit (CAN)
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 malfunction 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 and CAN-L) 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
NOTE: If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.CHECK DTC DETECTION
1. Turn ignition switch ON.
2. Start engine and wait for at least 6 seconds.
3. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
Follow the procedure “With CONSULT-III”.
Is “U1010 CONTROL UNIT (CAN)” detected? YES >> Go to TM-303, "Diagnosis Procedure".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
Diagnosis Procedure
1.CHECK CAN COMMUNICATION CIRCUIT
1. Turn ignition switch ON and start engine.
2. Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
Is “U1010 CONTROL UNIT (CAN)” indicated? YES >> Go to LAN section. Refer to LAN-25, "CAN System Specification Chart".
NO >> Check intermittent incident. Refer to GI-42, "Intermittent Incident".
U1000 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 ...
P0703 stop lamp switch
Description
BCM detects ON/OFF state of the stop lamp switch and transmits the data to
the TCM via CAN communication
by converting the data to a signal.
DTC Logic
DTC DETECTION LOGIC
DTC CONF ...
Other materials:
P2100, p2103 throttle control motor
relay
Description
Power supply for the throttle control motor is provided to the ECM via
throttle control motor relay. The throttle
control motor relay is ON/OFF controlled by the ECM. When the ignition switch is
turned ON, the ECM sends
an ON signal to throttle control motor relay and battery vol ...
Instrument panel
1. Instrument brightness control/Trip computer
reset switch
2. Vents
3. Headlight/fog light (if so equipped)/turn
signal switch
4. Driver supplemental air bag/horn
5. Meters and gauges
6. Paddle shift controls (if so equipped)
7. Windshield wiper/washer switch
8. Hazard warning flasher ...
Replacement operations
Description
This section is prepared for technicians who have attained a high level of
skill and experience in repairing collision-
damaged vehicles and also use modern service tools and equipment. Persons
unfamiliar with body
repair techniques should not attempt to repair collision-damaged v ...