INTELLIGENT PARKING ASSIST SYSTEM Image from Camera for Intelligent Parking Assist is Abnormal

DESCRIPTION

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

WIRING DIAGRAM

A005EA4E07

CAUTION / NOTICE / HINT

Note


  • When the "System initializing" message is displayed on the navigation ECU sub-assembly after the auxiliary battery cable has been disconnected, 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 intelligent parking assist system may be needed Click here.

Tech Tips

Images are difficult to discern even in normal conditions if:


  • Electrical devices are used in the cabin (noise may occur in the image).

  • Accessories that generate radio waves have been installed (noise may occur in the image).

  • The outer mirror switch assembly is operated (noise may occur in the image).

  • 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 around 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.)

  • The rear television camera assembly lens is scratched.

  • The rear television camera assembly lens has drops of water on it or the humidity is high.

  • 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 ASSEMBLY)


    1. Disconnect the L65 parking assist ECU connector.

    2. Disconnect the V6 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
      L65-14 (CB+) - V6-4 (CB+) Always Below 1 Ω
      L65-15 (CV+) - V6-2 (CV+) Always Below 1 Ω
      L65-37 (CGND) - V6-3 (CGND) Always Below 1 Ω
      L65-38 (CV-) - V6-1 (CV-) Always Below 1 Ω
      L65-14 (CB+) - Body ground Always 10 kΩ or higher
      L65-15 (CV+) - Body ground Always 10 kΩ or higher
      L65-37 (CGND) - Body ground Always 10 kΩ or higher
      L65-38 (CV-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A005BH4E01
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the L65 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L65-37 (CGND) - Body ground Always Below 1 Ω
      L65-38 (CV-) - Body ground Always Below 1 Ω

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (REAR TELEVISION CAMERA ASSEMBLY - POWER SOURCE)


    1. Disconnect the V6 rear television camera assembly connector.

    2. A005AXJE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rear Television Camera Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      V6-3 (CGND) - V6-4 (CB+)

      Power switch on (READY)

      Reverse (R) selected

      		 5.8 to 7.0 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

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


    1. Reconnect the V6 rear television camera assembly connector.

    2. Reconnect the L65 parking assist ECU connector.

      A005D0NE01

    3. 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 as shown in the illustration.
      Item Content
      Terminal No. (Symbol) L65-15 (CV+) - L64-4 (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.

      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)
      *b Waveform 1 (camera lens not covered, displaying an image)
      *c Waveform 2 (camera lens covered, blacking out the screen)
      *d Synchronization Signal
      *e Video Waveform

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

  5. READ VALUE USING GTS


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Turn the GTS on.

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

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

      IPA/Parking Assist Monitor
      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 connectors.


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

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

      Result
      Result Proceed to
      Malfunction does not reoccur (returns to normal) A
      Malfunction reoccurs B

    A

    END

    B

  7. REPLACE WIRE HARNESS (DIGITAL COMMUNICATION CABLE)


    1. Replace the digital communication cable between the parking assist ECU and navigation ECU sub-assembly with a new one.

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

      Result
      Result Proceed to
      Malfunction does not reoccur (returns to normal) A
      Malfunction reoccurs B

    A

    END

    B

  8. REPLACE NAVIGATION ECU SUB-ASSEMBLY


    1. Replace the navigation ECU sub-assembly with a new or known good one Click here.

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

      Result
      Result Proceed to
      Malfunction does not reoccur A
      Malfunction reoccurs B

    A

    END

    B

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