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:

    Removal and installation
    HORN Removal and Installation REMOVAL Remove the engine under cover. Refer to EXT-16, "Removal and Installation". Position aside the front fender protector (LH). Refer to EXT-24, "Removal and Installation". Disconnect the harness connectors (A) from the horns. Remove the horn brack ...

    Washer motor circuit
    Diagnosis Procedure 1. CHECK FRONT WASHER MOTOR FUSE Turn the ignition switch OFF. Check that the following fuse is not blown. 2. CHECK FRONT WASHER MOTOR POWER SUPPLY Disconnect front washer motor. Turn ignition switch ON. Check voltage between front washer motor harness conne ...

    Radiator core support
    Exploded View Radiator core support  Bolts Removal and Installation REMOVAL Remove front bumper. Refer to EXT-16, "Removal and Installation". Remove front combination lamps (LH/RH). Refer to EXL-154, "Removal and Installation" (Xenon Type), EXL-31 ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

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