PARKING ASSIST MONITOR SYSTEM(for Camera built-in ECU), Diagnostic DTC:C1622

DTC Code DTC Name
C1622 Open or Short Circuit in Back Camera Signal

DESCRIPTION

This DTC is stored if the navigation receiver assembly*1 or radio and display receiver assembly*2 judges that the signals or signal lines between the navigation receiver assembly*1 or radio and display receiver assembly*2 and the television camera assembly are not normal as a result of its self check.


DTC No. Detection Item DTC Detection Condition Trouble Area
C1622 Open or Short Circuit in Back Camera Signal Open or short in the television camera assembly signal circuit

  • Harness or connector

  • Television camera assembly

  • Navigation receiver assembly (for Navigation Receiver Type)

  • Radio and display receiver assembly (for Radio and Display Type)

WIRING DIAGRAM

A01VA9QE01
A01VA9QE02

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Body Electrical > Navigation System > Clear DTCs

    2. Check for DTCs.

      Click here


      Body Electrical > Navigation System > Trouble Codes
      Result
      Proceed to
      No DTC is output
      DTC is output (for Navigation Receiver Type)
      DTC is output (for Radio and Display Type)

    No DTC is output

    USE SIMULATION METHOD TO CHECK Click here

    DTC is output (for Radio and Display Type)

    CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEVISION CAMERA ASSEMBLY) Click here

    DTC is output (for Navigation Receiver Type)

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the G158 navigation receiver assembly connector.

    2. Disconnect the U22 television camera assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G158-11 (CA+) - U22-6 (CB+) Always Below 1 Ω
      G158-12 (V+) - U22-3 (CV+) Always Below 1 Ω
      G158-24 (V-) - U22-2 (CV-) Always Below 1 Ω
      G158-23 (CGND) - U22-5 (CGND) Always Below 1 Ω
      G158-11 (CA+) - Body ground Always 10 kΩ or higher
      G158-12 (V+) - Body ground Always 10 kΩ or higher
      G158-24 (V-) - Body ground Always 10 kΩ or higher
      G158-23 (CGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK NAVIGATION RECEIVER ASSEMBLY


    1. A01V9HUC10
      *a

      Component with harness connected

      (Navigation Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G158-23 (CGND) - Body ground Always Below 1 Ω
      G158-24 (V-) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G158-11 (CA+) - Body ground Ignition switch ON 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    OK

  4. CHECK TELEVISION CAMERA ASSEMBLY


    1. Check the waveform of the television camera assembly using an oscilloscope.

      A01V9B2C05
      *a

      Component with harness connected

      (Navigation Receiver Assembly)

      		 *b Waveform 1
      *c Waveform 2 *d Synchronized Signal
      *e Video Waveform - -

      Tech Tips

      A waterproof connector is used for the television camera assembly. Therefore, inspect the waveform at the navigation receiver assembly with the connector connected.

      OK
      Waveform is as shown in the illustration.
      Item Content
      Terminal No. (Symbol) G158-12 (V+) - G158-23 (CGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      Waveform 1: Ignition switch ON, camera lens is not covered, displaying an image

      Waveform 2: Ignition switch ON, camera lens is covered, blacking out the screen

      Tech Tips

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

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE NAVIGATION RECEIVER ASSEMBLY Click here

    NG

    REPLACE TELEVISION CAMERA ASSEMBLY Click here

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the G159 radio and display receiver assembly connector.

    2. Disconnect the U22 television camera assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G159-11 (CA+) - U22-6 (CB+) Always Below 1 Ω
      G159-12 (V+) - U22-3 (CV+) Always Below 1 Ω
      G159-24 (V-) - U22-2 (CV-) Always Below 1 Ω
      G159-23 (CGND) - U22-5 (CGND) Always Below 1 Ω
      G159-11 (CA+) - Body ground Always 10 kΩ or higher
      G159-12 (V+) - Body ground Always 10 kΩ or higher
      G159-24 (V-) - Body ground Always 10 kΩ or higher
      G159-23 (CGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  6. CHECK RADIO AND DISPLAY RECEIVER ASSEMBLY


    1. A01V9HUC09
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G159-23 (CGND) - Body ground Always Below 1 Ω
      G159-24 (V-) - Body ground Always Below 1 Ω

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      G159-11 (CA+) - Body ground Ignition switch ON 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    OK

  7. CHECK TELEVISION CAMERA ASSEMBLY


    1. Check the waveform of the television camera assembly using an oscilloscope.

      A01V9B2C06
      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

      		 *b Waveform 1
      *c Waveform 2 *d Synchronized Signal
      *e Video Waveform - -

      Tech Tips

      A waterproof connector is used for the television camera assembly. Therefore, inspect the waveform at the radio and display receiver assembly with the connector connected.

      OK
      Waveform is as shown in the illustration.
      Item Content
      Terminal No. (Symbol) G159-12 (V+) - G159-23 (CGND)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition

      Waveform 1: Ignition switch ON, camera lens is not covered, displaying an image

      Waveform 2: Ignition switch ON, camera lens is covered, blacking out the screen

      Tech Tips

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

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY Click here

    NG

    REPLACE TELEVISION CAMERA ASSEMBLY Click here