Nissan Versa (N17): U0101 can comm circuit

Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an onvehicle 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. Trouble diagnosis name (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 (emissionrelated 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, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

Perform the trouble diagnosis for CAN communication system. Refer to LAN, "Trouble Diagnosis Flow Chart".

Power supply and ground circuit

Diagnosis Procedure 1.CHECK GROUND CONNECTION Turn ignition switch OFF. Check ground connection E. Refer to Ground Inspection in GI, "Circuit Inspection". Is the inspection re ...

U1001 CAN comm circuit

Description CAN (Controller Area Network) is a serial communication line for real time application. It is an onvehicle multiplex communication line with high data communication speed and excellent ...

Other materials:

Cooling fan control
Cooling fan control : system diagram Cooling fan control : system description INPUT/OUTPUT SIGNAL CHART Sensor Input signal to ECM ECM function Actuator Crankshaft position sensor (POS) Camshaft position sensor (PHASE) Engine speed*1 Piston position Cool ...

Front suspension assembly
Inspection and Adjustment INSPECTION Make sure the mounting conditions (looseness, back lash) of each component and component conditions (wear, damage) are normal. LOWER BALL JOINT END PLAY Set front wheels in a straight-ahead position. Do not depress brake pedal. Place an iron bar ...

Categories


© 2017-2025 Copyright www.niveguide.com
0.0067