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:
CAN system (type 1)
DTC/CIRCUIT DIAGNOSIS
MAIN LINE BETWEEN IPDM-E AND DLC CIRCUIT
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and
loose connecti ...
Auto operation does not operate but manual operate normally
(driver side)
Diagnosis Procedure
1.PERFORM INITIALIZATION PROCEDURE
Initialization procedure is executed and operation is confirmed.
Refer to PWC-27, "ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL :
Special
Repair Requirement".
Is the inspection result normal?
YES >> Insp ...
Combination meter
Removal and Installation
REMOVAL
Disconnect the negative battery terminal. Refer to PG-77, "Removal
and Installation".
Remove the cluster lid A. Refer to IP-20, "Removal and
Installation".
Remove screws (A), from the combination meter (1).
...
