Nissan Sentra Service Manual: 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 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 No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
| U1001 | CAN COMM CIRCUIT (CAN communication circuit) | When ECM is not transmitting or receiving CAN communication signal other than OBD (emission related diagnosis) for 2 seconds or more. | Harness or connectors (CAN communication line is open or shorted) |
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON and wait at least 3 seconds.
- Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Proceed to EC-169, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
Perform the trouble diagnosis for CAN communication system. Refer 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 ...
P0011 IVT control
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P0011 is displayed with DTC P0075, first perform the trouble
diagnosis for EC-180, "DTC Logic".
DTC No.
CONSULT screen terms
(Tr ...
Other materials:
Preparation
Special Service Tool
The actual shape of the tools may differ from those illustrated here.
Commercial Service Tool
Clip list
Descriptions for clips
Replace any clips which are damaged during removal or installation.
...
SPORT mode switch
Adjusts the throttle sensitivity and transmission
points (CVT only) to enhance performance. Press
the SPORT button on the instrument panel to
activate. The SPORT mode indicator light (on the
speedometer) will illuminate. The SPORT mode
indicator light will remain lit while the mode is
acti ...
C1116 Stop lamp switch
DTC Logic
DTC DETECTION LOGIC
DTC
Display item
Malfunction detected condition
Possible cause
C1116
STOP LAMP SW
When stop lamp switch circuit is open.
Harness or connector
Stop lamp switch
ABS actuator and electric unit
(control unit)
...
