Nissan Sentra manuals

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

  1. Turn ignition switch ON and wait at least 3 seconds.
  2. 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. ...

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:

P060A ECM
DTC Logic DTC DETECTION LOGIC DTC No. CONSULT screen terms (Trouble diagnosis content) DTC detecting condition Possible cause P060A CONTROL MODULE (Internal control module monitoring processor performance) ECM internal monitoring processor is malfunctioning. ...

Intake manifold
Exploded View Clamp PCV hose Bracket Intake manifold gasket Intake manifold Mount rubber Clamp EVAP hose EVAP canister purge volume control solenoid valve Electric throttle control actuator gasket Electric throttle control actuator Clamp Water hose Water hose ...

Disassembly and assembly
FUEL LEVEL SENSOR UNIT Exploded View Fuel Level Sensor Unit Fuel filter and pump assembly Fuel level sensor unit Float arm assembly Fuel tank temperature sensor Fuel level sensor unit/fuel tank temperature sensor harness connector Disassembly and Assembly DISASSEMBLY Discon ...

В© 2014-2020 Copyright www.nisentra.com