PARKING ASSIST MONITOR SYSTEM(w/ Parallel Parking Assist Function) Image from Camera for Parking Assist Monitor is Abnormal

DESCRIPTION

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

WIRING DIAGRAM

A0020CQE04

CAUTION / NOTICE / HINT

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

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 multi-display is cold (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 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 (RADIO RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)

    Result
    Proceed to
    OK
    NG

    1. Disconnect the K58 radio receiver assembly connector.

    2. Disconnect the T1 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
      K58-39 (CA+) - T1-6 (CB+) Always Below 1 Ω
      K58-18 (V+) - T1-3 (CV+) Always Below 1 Ω
      K58-19 (V-) - T1-2 (CV-) Always Below 1 Ω
      K58-40 (CGND) - T1-5 (CGND) Always Below 1 Ω
      K58-39 (CA+) - Body ground Always 10 kΩ or higher
      K58-18 (V+) - Body ground Always 10 kΩ or higher
      K58-19 (V-) - Body ground Always 10 kΩ or higher
      K58-40 (CGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT RADIO RECEIVER ASSEMBLY (V-, CGND, CA+)

    Result
    Proceed to
    OK
    NG

    1. Reconnect the K58 radio receiver assembly connector.

    2. A0022WNC12
      *a

      Component with harness connected

      (Radio Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K58-19 (V-) - Body ground Always Below 1 Ω
      K58-40 (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
      K58-39 (CA+) - K58-40 (CGND) Power switch on (ACC) 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO RECEIVER ASSEMBLY Click here

    OK

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

    Result
    Proceed to
    OK
    NG

    1. Reconnect the T1 rear television camera assembly connector.

    2. A0022WNC13
      *a

      Component with harness connected

      (Radio Receiver Assembly)
      A0020LAC05
      *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 receiver assembly with the connector connected.

      OK
      Waveform is similar to that shown in the illustration.
      Item Content
      Measurement terminal K58-18 (V+) - K58-12 (GND1)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), shift lever in R

      Tech Tips

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

      Result
      Proceed to
      OK
      NG

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

  4. REPLACE RADIO RECEIVER ASSEMBLY


    1. Replace the radio receiver assembly.

      Click here

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

      OK
      Parking assist monitor system operates normally.
      Result
      Proceed to
      OK
      NG

    OK

    END

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here