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PARKING ASSIST MONITOR SYSTEM(w/o Parallel Parking Assist Function), Diagnostic DTC:C1622

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DTC Code DTC Name
C1622 Back Camera Disconnected
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DESCRIPTION

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

DTC No. DTC Detection Condition Trouble Area
C1622 Open or short in the camera assembly signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Radio receiver assembly
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

  • If the cable was disconnected from and reconnected to the negative (-) auxiliary battery terminal, the estimated course lines may not be displayed on the image of the area behind the vehicle. In this case, perform "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).

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PROCEDURE


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    CHECK HARNESS AND CONNECTOR (REAR TELEVISION CAMERA ASSEMBLY - RADIO RECEIVER ASSEMBLY)


    1. Disconnect the U22 rear television camera assembly connector.

    2. Disconnect the H177 radio receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      U22-6 (CB+) - H177-11 (CA+) Always Below 1 Ω
      U22-3 (CV+) - H177-12 (V+) Always Below 1 Ω
      U22-2 (CV-) - H177-24 (V-) Always Below 1 Ω
      U22-5 (CGND) - H177-23 (CGND) Always Below 1 Ω
      U22-6 (CB+) - Body ground Always 10 kΩ or higher
      U22-3 (CV+) - Body ground Always 10 kΩ or higher
      U22-2 (CV-) - Body ground Always 10 kΩ or higher
      U22-5 (CGND) - Body ground Always 10 kΩ or higher

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

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    INSPECT RADIO RECEIVER ASSEMBLY (CA+, CGND)


    1. Reconnect the H177 radio receiver assembly connector.

    2. A00072OE02

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H177-23 (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
      H177-11 (CA+) - H177-23 (CGND) Power switch on (ACC) 5.5 to 7.05 V
      Table 1. Text in Illustration
      *a

      Component with harness connected

      (Radio Receiver Assembly)

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    INSPECT RADIO RECEIVER ASSEMBLY (V+, GND1)


    1. Reconnect the U22 rear television camera assembly connector.

    2. A0007XVE20
      A0005HZE18
      A00070NE02

      Using an oscilloscope, check the waveform of the rear television camera assembly.

      Table 2. Text in Illustration
      *a

      Component with harness connected

      (Radio Receiver Assembly)
      Tip:

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

      OK
      Waveform is similar to that shown in the illustration.
      Item Content
      Measurement terminal H177-12 (V+) - H179-7 (GND1)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), shift lever in R
      Tip:

      • 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).

      Table 3. Text in Illustration
      *a Waveform 1 (camera lens is not covered, displaying an image)
      *b Waveform 2 (camera lens is covered, blacking out the screen)
      *c Synchronization Signal
      *d Video Waveform

    • OK

      REPLACE RADIO RECEIVER ASSEMBLY (Click here)

    • NG

      REPLACE REAR TELEVISION CAMERA ASSEMBLY (Click here)