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 radio and display receiver assembly*1 or navigation receiver assembly*2 via the parking assist ECU.


WIRING DIAGRAM

A005A2LE02

CAUTION / NOTICE / HINT

Note


  • When the "System initializing" message is displayed on the radio and display receiver assembly*1 or navigation receiver assembly*2 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.


  • *1: for Radio and Display Type

  • *2: for Navigation Receiver Type

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, 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 V14 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+) - V14-6 (CB+) Always Below 1 Ω
      L65-15 (CV+) - V14-3 (CV+) Always Below 1 Ω
      L65-37 (CGND) - V14-5 (CGND) Always Below 1 Ω
      L65-38 (CV-) - V14-2 (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. INSPECT PARKING ASSIST ECU (GND, CB+)


    1. A0059UPE02
      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

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      L65-14 (CB+) - L65 - 37 (CGND) Power switch on (ACC) 5.5 to 7.05 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. INSPECT REAR TELEVISION CAMERA ASSEMBLY (CV+, GND1)


    1. Reconnect the V14 rear television camera assembly connector.

    2. Reconnect the L65 parking assist ECU connector.

      A005D0NE01

    3. 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 parking assist ECU with the connector connected.

      OK
      Waveform is similar to that shown in the illustration.
      Item Content
      Measurement Terminal L65-15 (CV+) - L64-4 (GND1)
      Measurement Setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), reverse (R) selected

      Tech Tips


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

      • The video waveform is constantly output when the power switch is on (ACC).

      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

  4. 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

  5. CONFIRM MODEL


    1. Choose the model to be inspected.

      Result
      Result Proceed to
      for Radio and Display Type A
      for Navigation Receiver Type B

    B

    CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - NAVIGATION RECEIVER ASSEMBLY) Click here

    A

  6. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - RADIO AND DISPLAY RECEIVER ASSEMBLY)


    1. Disconnect the L65 parking assist ECU connector.

    2. Disconnect the L169 radio and display receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L65-16 (NS+) - L169-12 (V+) Always Below 1 Ω
      L65-17 (NS-) - L169-24 (V-) Always Below 1 Ω
      L65-16 (NS+) - Body ground Always 10 kΩ or higher
      L65-17 (NS-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT PARKING ASSIST ECU (NSG)


    1. A0059XFE01
      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
      L65-18 (NSG) - Body ground Always Below 1 Ω

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  8. INSPECT PARKING ASSIST ECU (NS+, NSG)


    1. Reconnect the L169 radio and display receiver assembly connector.

      A005D0NE02

    2. 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
      Measurement Terminal L65-16 (NS+) - L64-4 (GND1)
      Measurement Setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), 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 PARKING ASSIST ECU Click here

    OK

  9. REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. Replace the radio and display receiver assembly with a new or known good one Click here.

    2. Check if the same malfunction reoccurs 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

  10. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - NAVIGATION RECEIVER ASSEMBLY)


    1. Disconnect the L65 parking assist ECU connector.

    2. Disconnect the L173 navigation receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L65-16 (NS+) - L173-12 (V+) Always Below 1 Ω
      L65-17 (NS-) - L173-24 (V-) Always Below 1 Ω
      L65-16 (NS+) - Body ground Always 10 kΩ or higher
      L65-17 (NS-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  11. INSPECT PARKING ASSIST ECU (NSG)


    1. A0059XFE01
      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
      L65-18 (NSG) - Body ground Always Below 1 Ω

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  12. INSPECT PARKING ASSIST ECU (NS+, NSG)


    1. Reconnect the L173 navigation receiver assembly connector.

      A005D0NE02

    2. 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
      Measurement Terminal L65-16 (NS+) - L64-4 (GND1)
      Measurement Setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), 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 PARKING ASSIST ECU Click here

    OK

  13. REPLACE NAVIGATION RECEIVER ASSEMBLY


    1. Replace the navigation receiver 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