Nissan Sentra Service Manual: 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 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 |
| U0101 | LOST COMM (TCM) (Lost communication with TCM) | When ECM is not transmitting or receiving CAN communication signal of OBD (emission-related diagnosis) with TCM for 2 seconds or more. | CAN communication line between TCM and ECM |
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
- Turn ignition switch ON and wait at least 3 seconds.
- Check DTC.
Is DTC detected? YES >> Proceed to EC-168, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis Procedure
Perform the trouble diagnosis for CAN communication system. Refer to LAN-16, "Trouble Diagnosis Flow Chart".
Power supply and ground circuit
Diagnosis Procedure
1.CHECK FUSE
Check that the following fuse is not fusing.
Is the fuse fusing?
YES >> Replace the fuse after repairing the applicable circuit.
NO >> GO TO 2.
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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 excellen ...
Other materials:
Component parts
Component Parts Location
IPDM E/R, (Headlamp high relay,
Headlamp low relay, Taillamp relay
and Front fog lamp relay (if equipped))
Stop lamp switch
Parking brake switch
Combination meter
Combination switch
(lighting and turn signal switch)
BCM (view with combination meter r ...
Starting the engine (models with NISSAN Intelligent Key® system)
Apply the parking brake.
Continuously Variable Transmission:
Move the shift lever to P (Park) or N (Neutral).
P (Park) is recommended.
The starter is designed not to operate if
the shift lever is in any of the driving
positions.
Manual Transmission:
Move the shift lever to N ( ...
Door mirror
Exploded view
Door mirror cover
(with side turn signal lamp)
Door mirror housing
Door mirror actuator
Glass mirror
Door mirror cover
(without side turn signal lamp)
: Pawl
Door mirror assembly
Door mirror assembly : removal and installation
Removal
Caution:
Be careful no ...