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 navigation ECU sub-assembly.

WIRING DIAGRAM

A01CCFUE08

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the navigation ECU sub-assembly after disconnecting the cable from the negative (-) 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.

Tech Tips

Images may be unclear 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 engine 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 (NAVIGATION ECU SUB-ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the F23 connector from the navigation ECU sub-assembly.

    2. Disconnect the U18 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
      F23-19 (V-) - U18-1 (CV-) Always Below 1 Ω
      F23-18 (V+) - U18-2 (CV+) Always Below 1 Ω
      F23-40 (CGND) - U18-3 (CGND) Always Below 1 Ω
      F23-39 (CA+) - U18-4 (CB+) Always Below 1 Ω
      F23-19 (V-) - Body ground Always 10 kΩ or higher
      F23-18 (V+) - Body ground Always 10 kΩ or higher
      F23-40 (CGND) - Body ground Always 10 kΩ or higher
      F23-39 (CA+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT NAVIGATION ECU SUB-ASSEMBLY (V-, CGND, CA+)


    1. A01CER6E22
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

      Reconnect the F23 connector to the navigation ECU sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F23-19 (V-) - Body ground Always Below 1 Ω
      F23-40 (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
      F23-39 (CA+) - F23-40 (CGND)

      Engine switch on (IG)

      Shift lever in R

      		 5.5 to 7.05 V

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

  3. INSPECT NAVIGATION ECU SUB-ASSEMBLY (V+, GND1)


    1. Reconnect the U18 connector to the rear television camera assembly.

    2. Reconnect the F23 connector to the navigation ECU sub-assembly.

      A01CGGZE01
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)
      *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

    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 navigation ECU sub-assembly with the connector connected.

      OK
      Waveform is as shown in the illustration.
      Item Content
      Terminal No. (Symbol) F23-18 (V+) - F23-12 (GND1)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Engine switch on (IG), shift lever in R

      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

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