PARKING ASSIST MONITOR SYSTEM Black Screen

DESCRIPTION

The video signal from the rear television camera assembly is transmitted to the radio and display receiver assembly.

WIRING DIAGRAM

B000KJ8E15

INSPECTION PROCEDURE

Note


  • If the cable was disconnected from and reconnected to the negative (-) battery terminal, the estimated course lines may not be displayed on the image of the area behind the vehicle. In this case, perform "Correct the Steering Angle Neutral Point" Click here.

  • Depending on the parts that are replaced or operations that are performed during vehicle inspection or maintenance, calibration of other systems as well as the parking assist monitor system may be needed Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the I185 radio and display receiver assembly connector.

    2. Disconnect the T20 rear television camera assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I185-11 (CA+) - T20-6 (CB+) Always Below 1 Ω
      I185-12 (V+) - T20-3 (CV+) Always Below 1 Ω
      I185-24 (V-) - T20-2 (CV-) Always Below 1 Ω
      I185-23 (CGND) - T20-5 (CGND) Always Below 1 Ω
      I185-11 (CA+) - Body ground Always 10 kΩ or higher
      I185-12 (V+) - Body ground Always 10 kΩ or higher
      I185-24 (V-) - Body ground Always 10 kΩ or higher
      I185-23 (CGND) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (CA+, CGND)


    1. Reconnect the I185 radio and display receiver assembly connector.

    2. B000I8HE26
      Text in Illustration
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

      Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      I185-23 (CGND) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      I185-11 (CA+) - I185-23 (CGND) Ignition switch ACC 5.5 to 7.05 V

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  3. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY (V+, GND1)


    1. Reconnect the T20 rear television camera assembly connector.

    2. B000HDCE17
      Text in Illustration
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)
      B000ITOE35
      Text in Illustration
      *a Waveform 1 (camera lens is not covered, displaying an image)
      *b Waveform 2 (camera lens is covered, blacking out the screen)
      *c Synchronization Signal
      *d Video Waveform

      Using an oscilloscope, check the waveform of the rear television camera assembly.

      Tech Tips

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly with the connector connected.

      OK
      Waveform is similar to that shown in the illustration.
      Item Content
      Measurement terminal I185-12 (V+) - I152-7 (GND1)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Ignition switch ON, shift lever in R

      Tech Tips


      • The video waveform changes according to the image sent by the rear television camera assembly.

      • The video waveform is constantly output when the ignition switch is turned to ACC.


    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

  4. REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Replace the radio and display receiver assembly with a new or known good one Click here.

    2. Check that the parking assist monitor system operates normally.

      OK
      Parking assist monitor system operates normally.

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

    END