Nissan Maxima Service and Repair 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

Nissan Maxima. DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

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

Diagnosis Procedure

    Power supply and ground circuit
    Diagnosis Procedure 1.CHECK GROUND CONNECTION-I Turn ignition switch OFF. Check ground connection E9. Refer to Ground Inspection 2.CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I Disconnec ...

    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 excelle ...

    Other materials:

    Preparation
    Special Service Tool The actual shapes of the tools may differ from those illustrated here. Commercial Service Tool Sealant and/or Lubricant ...

    Oil viscosity
    The engine oil viscosity or thickness changes with temperature. Because of this, it is important to select the engine oil viscosity based on the temperatures at which the vehicle will be operated before the next oil change. Choosing an oil viscosity other than that recommended could cause seri ...

    P1722 vehicle speed
    Description The vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) to TCM via CAN communication line. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE CAUTION: Always drive vehicle at a safe speed. NOTE: Immediately after performing any "DT ...

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