PARKING ASSIST MONITOR SYSTEM, Diagnostic DTC:C1622

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

DESCRIPTION

This DTC is stored if the navigation ECU sub-assembly judges that the signals or signal lines between the navigation ECU sub-assembly 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

  • Television camera assembly

  • Navigation ECU sub-assembly

  • Harness or connector

WIRING DIAGRAM

E270977E08

CAUTION / NOTICE / HINT

Note:

  • When "System initializing" is displayed on the navigation ECU sub-assembly after disconnecting the cable from the negative (-) battery terminal, 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).

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - TELEVISION CAMERA ASSEMBLY)

    1. Disconnect the G49 navigation ECU sub-assembly connector.

    2. Disconnect the U6 television camera assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G49-7 (CA+) - U6-6 (CB+)

      Always

      Below 1 Ω

      G49-8 (V+) - U6-3 (CV+)

      Always

      Below 1 Ω

      G49-16 (V-) - U6-2 (CV-)

      Always

      Below 1 Ω

      G49-15 (CGND) - U6-5 (CGND)

      Always

      Below 1 Ω

      G49-7 (CA+) - Body ground

      Always

      10 kΩ or higher

      G49-8 (V+) - Body ground

      Always

      10 kΩ or higher

      G49-16 (V-) - Body ground

      Always

      10 kΩ or higher

      G49-15 (CGND) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK NAVIGATION ECU SUB-ASSEMBLY (V-, CGND, CA+)

    1. E216447C14

      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

      Reconnect the G49 navigation ECU sub-assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G49-15 (CGND) - Body ground

      Always

      Below 1 Ω

      G49-16 (V-) - 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

      G49-7 (CA+) - G49-15 (CGND)

      Ignition switch ON, shift lever in R

      5.5 to 7.05 V

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY

    Click here

    OK

  3. CHECK NAVIGATION ECU SUB-ASSEMBLY (V+, GND1)

    1. Reconnect the U6 television camera assembly connector.

      E271051C09

      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

      *b

      Waveform 1 (camera lens is not covered, displaying an image)

      *c

      Waveform 2 (camera lens is covered, blacking out the screen)

      *d

      Synchronization Signal

      *e

      Video Waveform

      -

      -

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

      Tip:

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

      Item

      Content

      Terminal No. (Symbol)

      G49-8 (V+) - G138-7 (GND1)

      Tool Setting

      200 mV/DIV., 50 μsec./DIV.

      Condition

      Ignition switch ON, shift lever in R
      Tip:

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

    Result

    Proceed to

    Waveform is as shown in the illustration

    Waveform is not as shown in the illustration
    Waveform is as shown in the illustration

    REPLACE NAVIGATION ECU SUB-ASSEMBLY

    Click here

    Waveform is not as shown in the illustration

    REPLACE TELEVISION CAMERA ASSEMBLY

    Click here