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.

  • *1: for Navigation Receiver Type

  • *2: for Radio and Display Type

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

E288886E01
E288886E02

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 hereClick hereClick hereClick hereClick 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. E280624C10

      *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 hereClick here

    OK

  4. CHECK TELEVISION CAMERA ASSEMBLY

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

      E280623C05

      *a

      Component with harness connected

      (Navigation Receiver Assembly)

      *b

      Waveform 1

      *c

      Waveform 2

      *d

      Synchronized Signal

      *e

      Video Waveform

      -

      -
      Tip:

      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
      Tip:

      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 hereClick here

    NG

    REPLACE TELEVISION CAMERA ASSEMBLY

    Click hereClick 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. E280624C09

      *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 hereClick here

    OK

  7. CHECK TELEVISION CAMERA ASSEMBLY

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

      E280623C06

      *a

      Component with harness connected

      (Radio and Display Receiver Assembly)

      *b

      Waveform 1

      *c

      Waveform 2

      *d

      Synchronized Signal

      *e

      Video Waveform

      -

      -
      Tip:

      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
      Tip:

      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 hereClick here

    NG

    REPLACE TELEVISION CAMERA ASSEMBLY

    Click hereClick here