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

DESCRIPTION

The display signal from the rear television camera assembly is transmitted to the navigation receiver assembly*1 or radio and display receiver assembly*2 via the parking assist ECU.


WIRING DIAGRAM

A01DMR0E02

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the parking assist ECU after the battery terminal 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 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).

  • The camera lens 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 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 SIDE MONITOR SYSTEM


    1. Check if the same malfunction occurs when the side monitor screen is displayed.

      Result
      Result Proceed to
      Malfunction occurs when parking assist monitor screen is displayed (side monitor screen is normal). A
      Malfunction occurs when parking assist monitor screen and side monitor screen are displayed. B

    B
    A
  2. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA ASSEMBLY AND BODY GROUND)


    1. Disconnect the I7 parking assist ECU connector.

    2. Disconnect the X9*1 or v2*2 rear television camera assembly connector.


      • *1: w/ Tire Carrier

      • *2: w/o Tire Carrier

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

      Standard Resistance
      w/ Tire Carrier
      Tester Connection Condition Specified Condition
      I7-38 (CV-) - X9-2 (CV-) Always Below 1 Ω
      I7-15 (CV+) - X9-3 (CV+) Always Below 1 Ω
      I7-14 (CB+) - X9-6 (CB+) Always Below 1 Ω
      I7-37 (CGND) - X9-5 (CGND) Always Below 1 Ω
      I7-38 (CV-) - Body ground Always 10 kΩ or higher
      I7-15 (CV+) - Body ground Always 10 kΩ or higher
      I7-14 (CB+) - Body ground Always 10 kΩ or higher
      I7-37 (CGND) - Body ground Always 10 kΩ or higher
      w/o Tire Carrier
      Tester Connection Condition Specified Condition
      I7-38 (CV-) - v2-2 (CV-) Always Below 1 Ω
      I7-15 (CV+) - v2-3 (CV+) Always Below 1 Ω
      I7-14 (CB+) - v2-6 (CB+) Always Below 1 Ω
      I7-37 (CGND) - v2-5 (CGND) Always Below 1 Ω
      I7-38 (CV-) - Body ground Always 10 kΩ or higher
      I7-15 (CV+) - Body ground Always 10 kΩ or higher
      I7-14 (CB+) - Body ground Always 10 kΩ or higher
      I7-37 (CGND) - Body ground Always 10 kΩ or higher

    NG
    OK
  3. CHECK PARKING ASSIST ECU (CB+, CGND)


    1. A01DU6EE34
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the I7 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I7-37 (CGND) - Body ground Always Below 1 Ω
      I7-38 (CV-) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      I7-14 (CB+) - Body ground Engine switch on (IG) 5.5 to 7.05 V
      Result
      Proceed to Result
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B
    C
    A
  4. CHECK REAR TELEVISION CAMERA ASSEMBLY (CV+, CGND)

    A01DS32E33
    Text in Illustration
    *a

    Component with harness connected

    (Parking Assist ECU)

    *b Waveform A
    *c Waveform B *d Synchronized Signal
    *e Video Waveform - -

    1. 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 receiver assembly*1 or radio and display receiver assembly*2 with the connector connected.


        • *1: for Navigation Receiver Type

        • *2: for Radio and Display Type

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

      Item Content
      Terminal No. (Symbol) I7-15 (CV+) - I7-37 (CGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition
      • Waveform A: Engine switch on (IG), camera lens is not covered, displaying an image

      • Waveform B: Engine switch on (IG), camera lens is covered, blacking out the screen

      OK
      Waveform is as shown in the illustration.
      Result
      Proceed to Result
      OK A
      NG (w/ Tire Carrier) B
      NG (w/o Tire Carrier) C

    B
    C
    A
  5. CHECK HARNESS AND CONNECTOR


    1. Disconnect the I7 parking assist ECU connector.

    2. Disconnect the H50 navigation receiver assembly*1 or radio and display receiver assembly*2 connectors.


      • *1: for Navigation Receiver Type

      • *2: for Radio and Display Type

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I7-16 (NS+) - H50-12 (V+) Always Below 1 Ω
      I7-17 (NS-) - H50-24 (V-) Always Below 1 Ω
      I7-18 (NSG) - H50-23 (CGND) Always Below 1 Ω
      I7-16 (NS+) - Body ground Always 10 kΩ or higher
      I7-17 (NS-) - Body ground Always 10 kΩ or higher
      I7-18 (NSG) - Body ground Always Below 1 kΩ
      Result
      Result Proceed to
      OK (for Navigation Receiver Type) A
      OK (for Radio and Display Type) B
      NG C

    B
    C
    A
  6. CHECK NAVIGATION RECEIVER ASSEMBLY


    1. Replace the navigation receiver assembly with a normally functioning one Click here.

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

      OK
      Malfunction does not reoccur (returns to normal).
      Result
      Proceed to Result
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B
    C
    A
  7. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Replace the radio and display receiver assembly with a normally functioning one Click here.

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

      OK
      Malfunction does not reoccur (returns to normal).
      Result
      Proceed to Result
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B
    C
    A