PARKING ASSIST 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 multi-display assembly via the parking assist ECU.

WIRING DIAGRAM

A01NEUHE01

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the multi-display after the battery terminal 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 are difficult to discern even in normal conditions if:


  • Noise may occur in the image during power back door operation. (w/ power back door system)

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

  • 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 ambience of 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.)

PROCEDURE


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


    1. A01NDS1E01

      Disconnect the F55 connector from the parking assist ECU.

    2. A01NI0EE04

      Disconnect the Y14 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
      F55-11 (CV-) - Y14-1 (CV-) Always Below 1 Ω
      F55-12 (CV+) - Y14-2 (CV+) Always Below 1 Ω
      F55-14 (CB+) - Y14-4 (CB+) Always Below 1 Ω
      F55-11 (CV-) - Body ground Always 10 kΩ or higher
      F55-12 (CV+) - Body ground Always 10 kΩ or higher
      F55-13 (CGND) - Body ground Always 10 kΩ or higher
      F55-14 (CB+) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Parking Assist ECU)
      *2

      Front view of wire harness connector

      (to Rear Television Camera Assembly)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01NEXVE01
      Text in Illustration
      *1

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the F55 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
      F55-11 (CV-) - Body ground Always Below 1 Ω
      F55-13 (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 Y14 connector from the rear television camera assembly.

    2. A01NI0EE03
      Text in Illustration
      *1

      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
      Y14-3 (CGND) - Y14-4 (CB+)

      Power switch on (IG)

      Shift lever in R

      		 5.8 to 7.0 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

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


    1. Reconnect the Y14 connector to the rear television camera assembly.

    2. A01NFWRE01

      Reconnect the F54 and F55 connectors to the parking assist ECU.

    3. A01NFQZE02
      Text in Illustration
      *1

      Component with harness connected

      (Parking Assist ECU)
      *2 Waveform 1 (under normal conditions)
      *3 Waveform 2 (camera lens is covered, blacking out the screen)
      *4 Synchronized Signal
      *5 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 as shown in the illustration.
      Item Content
      Terminal No. (Symbol) F55-12 (CV+) - F54-3 (GND1)
      Tool Setting 200 mV/DIV., 50 μsec./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.


    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

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