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REAR VIEW MONITOR SYSTEM, 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 radio receiver assembly and the rear television camera assembly are not normal as a result of its self check.

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

  • Harness or connector

  • Luggage electrical key switch

  • Rear television camera assembly

  • Radio receiver assembly
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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - LUGGAGE ELECTRICAL KEY SWITCH)


    1. Disconnect the O71 radio receiver assembly connector.

    2. Disconnect the U40 luggage electrical key switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O71-11 (CA+) - U40-6 (CB+) Always Below 1 Ω
      O71-12 (V+) - U40-3 (CV+) Always Below 1 Ω
      O71-24 (V-) - U40-2 (CV-) Always Below 1 Ω
      O71-23 (CGND) - U40-5 (CGND) Always Below 1 Ω
      O71-11 (CA+) - Body ground Always 10 kΩ or higher
      O71-12 (V+) - Body ground Always 10 kΩ or higher
      O71-24 (V-) - Body ground Always 10 kΩ or higher
      O71-23 (CGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    • OKClick here
    • NG

      REPAIR OR REPLACE HARNESS OR CONNECTOR

  2. Click here

    INSPECT LUGGAGE ELECTRICAL KEY SWITCH


    1. Disconnect the A rear television camera assembly connector.

    2. Inspect the luggage electrical key switch.

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      Result
      Proceed to
      OK
      NG

  3. Click here

    INSPECT RADIO RECEIVER ASSEMBLY


    1. Reconnect the O71 radio receiver assembly connector.

    2. A01FO12C03
      *a

      Component with harness connected

      (Radio Receiver Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      O71-23 (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
      O71-11 (CA+) - O71-23 (CGND) Engine switch on (ACC) 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

  4. Click here

    INSPECT REAR TELEVISION CAMERA ASSEMBLY


    1. Reconnect the U40 luggage electrical key switch connector.

    2. Reconnect the A rear television camera assembly connector.

    3. B00674KC01
      *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
      A01FMFRC02
      *a

      Component with harness connected

      (Radio Receiver Assembly)

      Using an oscilloscope, check the waveform of the rear television camera 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 O71-12 (V+) - O68-7 (GND1)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Engine 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 engine switch is on (ACC).

      Result
      Proceed to
      OK
      NG