Nissan Altima 2007-2012 Service Manual: 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 LAN-25, "CAN Communication Signal Chart".
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result”.
Is “CAN COMM CIRCUIT” displayed? YES >> Refer to LAN-8, "CAN Communication Control Circuit".
NO >> Refer to GI-42, "Intermittent Incident".
U1010 control unit (can)
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1. REPLACE BCM
When DTC U1010 is detected, replace BCM.
>> Replace BCM. Refer to BCS-96, "Removal and Installation". ...
Other materials:
Relay control system
System Diagram
System Description
IPDM E/R activates the internal control circuit to perform the relay ON-OFF
control according to the input signals
from various sensors and the request signals received from control units via CAN
communication.
CAUTION:
IPDM E/R integrated relays cannot ...
Bluetooth control unit
Diagnosis Procedure
1.CHECK FUSE
Check that the following fuses of the Bluetooth control unit are not blown.
Are the fuses OK?
YES >> GO TO 2
NO >> Be sure to eliminate cause of malfunction before installing new fuse.
2.CHECK POWER SUPPLY CIRCUIT
Check voltage between Bluetooth ...
P0327, P0328, P0332, P0333 KS
Description
The knock sensor is attached to the cylinder block. It senses engine knocking
using a piezoelectric element. A
knocking vibration from the cylinder block is sensed as vibrational pressure.
This pressure is converted into a
voltage signal and sent to the ECM.
DTC Logic
DTC DETECT ...