PARKING ASSIST MONITOR SYSTEM Image from Camera for Parking Assist Monitor is Abnormal

DESCRIPTION

The video signal from the rear television camera assembly is transmitted to the multi-display via the parking assist ECU.

WIRING DIAGRAM

A003VH6E01

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the multi-display after disconnecting the cable from the negative (-) auxiliary battery terminal, 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.

  • After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

Tech Tips

Images may be unclear even in normal conditions if:


  • Noise may occur in the image depending on electrical devices used in the cabin.

  • Noise may occur in the image if the outer mirror switch assembly is operated.

  • Noise may occur in the image if accessories that generate radio waves have been installed.

  • The camera screen is frosted over (the image immediately after turning the power switch on (IG) may be blurred or darker than normal).

  • The camera lens is dirty with snow, mud, etc.

  • A strong beam of light, such as a sunbeam or headlight, hits the camera.

  • It is too dark around the camera (at night etc.).

  • The ambient temperature around the camera is either too high or too low.

  • The vehicle is tilted at a steep angle.

  • The ambient light surrounding the camera is too bright. (When a strong light, such as a sunbeam reflected off the vehicle body, hits the camera, the image may be blurred. This is called the "SMEAR" phenomenon, peculiar to the CCD camera.)

  • When the camera is used under fluorescent lights, sodium lights, or mercury lights etc., the lights and the illuminated area may appear to flicker.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA)


    1. Disconnect the H8 connector from the parking assist ECU.

    2. Disconnect the V8 connector from the rear television camera assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H8-11 (CV-) - V8-1 (CV-) Always Below 1 Ω
      H8-12 (CV+) - V8-2 (CV+) Always Below 1 Ω
      H8-13 (CGND) - V8-3 (CGND) Always Below 1 Ω
      H8-14 (CB+) - V8-4 (CB+) Always Below 1 Ω
      H8-11 (CV-) - Body ground Always 10 kΩ or higher
      H8-12 (CV+) - Body ground Always 10 kΩ or higher
      H8-13 (CGND) - Body ground Always 10 kΩ or higher
      H8-14 (CB+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING ASSIST ECU (CV-, CGND)


    1. A003VQ3E15
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the H8 connector to the parking assist ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H8-11 (CV-) - Body ground Always Below 1 Ω
      H8-13 (CGND) - Body ground Always Below 1 Ω

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. CHECK REAR TELEVISION CAMERA ASSEMBLY (CB+, CGND)


    1. Disconnect the V8 connector from the rear television camera assembly.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      V8-4 (CB+) - V8-3 (CGND)

      Power switch on (READY)

      Reverse (R) selected

      		 5.5 to 7.0 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  4. CHECK PARKING ASSIST ECU (CV+, GND1)


    1. Reconnect the V8 connector to the rear television camera assembly.

    2. A003YG1E15
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the H9 connector to the parking assist ECU.

    3. A003ZLFE13
      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

      Check the waveform of the rear television camera assembly using an oscilloscope.

      Tech Tips

      A waterproof connector is used for the rear television camera assembly. Therefore, inspect the waveform at the parking assist ECU with the connector connected.

      OK
      Waveform is similar to that shown in the illustration.
      Item Content
      Terminal No. (Symbol) H8-12 (CV+) - H9-3 (GND1)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Power switch on (READY), reverse (R) selected

      Tech Tips

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


    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

  5. READ VALUE USING INTELLIGENT TESTER


    1. Connect the intelligent tester to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Chassis / Parking Assist Monitor System / Data List.

    5. Check the Data List for proper functioning of the following items.

      Parking Assist Monitor System
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      ASIC Output Status Output condition of camera display/OK or NG

      OK: Output condition of camera display is normal

      NG: Output condition of camera display is abnormal

      		 -

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  6. CHECK DIGITAL COMMUNICATION CABLE CONNECTOR


    1. Check the digital communication cable connector.


      1. Check the digital communication cable connectors between the parking assist ECU and multi-display for any connection problems Click here.

    2. Check if the same malfunction recurs when the parking assist monitor screen is displayed.

      Result
      Result Proceed to

      Malfunction does not recur

      (returns to normal)

      		 A
      Malfunction recurs B

    B

    REPLACE WIRE HARNESS (DIGITAL COMMUNICATION CABLE) Click here

    A

    END

  7. REPLACE WIRE HARNESS (DIGITAL COMMUNICATION CABLE)


    1. Replace the digital communication cable between the parking assist ECU and multi-display with a new one.

    2. Check if the same malfunction recurs when the parking assist monitor screen is displayed.

      Result
      Result Proceed to

      Malfunction does not recur

      (returns to normal)

      		 A
      Malfunction recurs B

    B

    REPLACE MULTI-DISPLAY Click here

    A

    END

  8. REPLACE MULTI-DISPLAY


    1. Replace the multi-display with a new or known good one Click here.

    2. Check if the same malfunction recurs when the parking assist monitor screen is displayed.

      Result
      Result Proceed to

      Malfunction does not recur

      (returns to normal)

      		 A
      Malfunction recurs B

    B

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    A

    END