Nissan Rogue 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 Description
DTC DETECTION LOGIC
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition |
| U1001 | CAN COMM CIRCUIT (CAN COMM CIRCUIT) | When ECM is not transmitting or receiving CAN communication signal other than OBD (emission related diagnosis) for 2 seconds or more. |
POSSIBLE CAUSE
Harness or connectors (CAN communication line is open or shorted)
FAIL-SAFE
Not applicable
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-170, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
Perform the trouble diagnosis for CAN communication system. Refer to LAN-17, "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 ...
U1040 ENG comm circuit
DTC Description
DTC DETECTION LOGIC
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
U1040
ENG COMM CIRCUIT
(Engine communication circu ...
Other materials:
Front wiper motor ground circuit
Diagnosis Procedure
Regarding Wiring Diagram information, refer to WW-22, "Wiring Diagram".
1. CHECK FRONT WIPER MOTOR GROUND CIRCUIT
Turn the ignition switch OFF.
Disconnect front wiper motor.
Check continuity between front wiper motor harness connector and
...
Preparation
Special Service Tool
The actual shape of the tools may differ from those tools illustrated here.
Tool number
(TechMate No.)
Tool nam
Description
—
(J-50190)
Signal Tech II
Activate and display TPMS transmitter IDs
Display tire ...
Preparation
Special Service Tool
The actual shape of the tools may differ from those illustrated here.
Tool number
(TechMate No.)
Tool name
Description
—
(J-49286)
Drift and Pull gauge
Measuring drift and pull
Commercial Service Tool
Tool name
...
