Nissan Maxima Service and Repair Manual: U1243 display unit

Nissan Maxima Service and Repair Manual / Driver information & multimedia / Audio, visual & navigation system / DTC/circuit diagnosis / U1243 display unit

Description

Part name  Description 
DISPLAY UNIT 
  • Display image is controlled by the serial communication from AV control unit.
  • Inputs the RGB image signal (RGB, RGB area and RGB synchronizing) from AV control unit and the auxiliary image signal from the auxiliary input jacks.
  • Outputs the synchronizing signals (HP and VP) to the AV control unit. 

DTC Logic

Nissan Maxima. DTC Logic

Diagnosis Procedure

1.CHECK DISPLAY UNIT POWER SUPPLY AND GROUND CIRCUIT

Check display unit power supply and ground circuit

2.CHECK CONTINUITY OF COMMUNICATION CIRCUIT

Nissan Maxima. CHECK CONTINUITY OF COMMUNICATION CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect display unit connector and AV control unit connector.
  3. Check continuity between display unit harness connector M141 (A) terminals 11, 22 and AV control unit harness connector M117 (B) terminals 56, 44.
  4. Check continuity between display unit harness connector M141 (A) terminals 11, 22 and ground.

Nissan Maxima. CHECK CONTINUITY OF COMMUNICATION CIRCUIT

Nissan Maxima. CHECK CONTINUITY OF COMMUNICATION CIRCUIT

3.CHECK COMMUNICATION SIGNAL

Nissan Maxima. CHECK COMMUNICATION SIGNAL

  1. Connect display unit connector and AV control unit connector.
  2. Turn ignition switch ON.
  3. Check signal between display unit harness connector M141 terminal 11 and ground with an oscilloscope or CONSULT.

Nissan Maxima. CHECK COMMUNICATION SIGNAL

4.CHECK COMMUNICATION SIGNAL

Nissan Maxima. CHECK COMMUNICATION SIGNAL

Check signal between display unit harness connector M141 terminal 22 and ground with an oscilloscope or CONSULT.

Nissan Maxima. CHECK COMMUNICATION SIGNAL

    U1232 steering angle sensor
    DTC Logic Diagnosis Procedu 1.ADJUST THE PREDICTIVE COURSE LINE CENTER POSITION OF THE STEERING ANGLE SENSOR When U1232 is detected, adjust the predictive course line center position of the ...

    U1263 USB
    DTC Logic Diagnosis Procedure 1.CHECK USB HARNESS Visually check USB harness. ...

    Other materials:

    B2128 UART communication line
    Description Driver seat control unit performs UART communication with the automatic drive positioner control unit using 1 communication line. Driver seat control unit receives the operation signals of ADP steering switch, door mirror remote control switch and the position signals of tilt sens ...

    Door locks/unlocks precaution
    Do not push the door handle request switch with the Intelligent Key held in your hand as illustrated. The close distance to the door handle will cause the Intelligent Key system to have difficulty recognizing that the Intelligent Key is outside the vehicle. After locking with the ...

    Power supply and ground circuit
    Diagnosis Procedure 1. CHECK FUSE AND FUSIBLE LINK Check if the following BCM fuses or fusible link are blown 2. CHECK POWER SUPPLY CIRCUIT Turn ignition switch OFF. Disconnect BCM. Check voltage between BCM harness connector and ground. 3. CHECK GROUND CIRCUIT Check contin ...

    Nissan Maxima Owners Manual

    Nissan Maxima Service and Repair Manual

    © 2017-2021 Copyright www.nimainfo.com
    0.0134