Nissan Maxima Service and Repair Manual: U1000 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 two 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.

CAN Communication Signal Chart. Refer to LAN-14, "How to Use CAN Communication Signal Chart".

DTC Logic

DTC DETECTION LOGIC

Nissan Maxima. DTC DETECTION LOGIC

Diagnosis Procedure

1.CHECK WITH SELF-DIAGNOSIS FUNCTION OF CONSULT

  1. Turn ignition switch ON and wait for 2 or more seconds.
  2. Using CONSULT, perform "SELF-DIAGNOSIS RESULTS" of HVAC.
    DTC/circuit diagnosis
    ...

    U1010 control unit (CAN)
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    Other materials:

    System maintenance
    The sensor A is located behind the lower grille of the front bumper. To keep the system operating properly, be sure to observe the following: Always keep the sensor area of the front bumper clean. Do not strike or damage the areas around the sensor. Do not cover or attach sticke ...

    Changing engine oil
    1. Park the vehicle on a level surface and apply the parking brake. 2. Start the engine and let it idle until it reaches operating temperature, then turn it off. 3. Remove the oil filler cap A by turning it counterclockwise. 4. Remove clips B from the under-engine protector. 5 ...

    ECU diagnosis information
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    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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