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DTC C1622: Back Camera Disconnected [10/2014 - ]: Procedure

  1. CONFIRM MODEL 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      w/ Navigation System A
      w/o Navigation System B

    Result: 

    B 

    See step  5

    Result: 

    A 

    See step  2

  2. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY) 
    1. Disconnect the E28 navigation ECU sub-assembly connector.
    2. Disconnect the O6 rear television camera assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E28-11 (CA+) - O6-6 (CB+) Always Below 1 Ω
      E28-12 (V+) - O6-3 (CV+) Always Below 1 Ω
      E28-24 (V-) - O6-2 (CV-) Always Below 1 Ω
      E28-23 (CGND) - O6-5 (CGND) Always Below 1 Ω
      E28-11 (CA+) - Body ground Always 10 kΩ or higher
      E28-12 (V+) - Body ground Always 10 kΩ or higher
      E28-24 (V-) - Body ground Always 10 kΩ or higher
      E28-23 (CGND) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  3

  3. INSPECT NAVIGATION ECU SUB-ASSEMBLY 
    1. Reconnect the E28 navigation ECU sub-assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY587339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      E28-23 (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
      E28-11 (CA+) - E28-23 (CGND) Power switch on (ACC) 5.5 to 7.05 V
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Navigation ECU Sub-assembly)

    Result: 

    NG 

    REPLACE NAVIGATION ECU SUB-ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  4

  4. INSPECT REAR TELEVISION CAMERA ASSEMBLY 
    1. Reconnect the O6 rear television camera assembly connector.
    2. Using an oscilloscope, check the waveform of the rear television camera assembly.
      GTY600226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Navigation ECU Sub-assembly)
      GTY582164Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

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

      OK

      Waveform is similar to that shown in the illustration.

      Item Content
      Measurement terminal E28-12 (V+) - E17-7 (GND1)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), shift lever in R

      HINT: 

      • 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).
      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

    Result: 

    OK 

    REPLACE NAVIGATION ECU SUB-ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    REPLACE REAR TELEVISION CAMERA ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

  5. CHECK HARNESS AND CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY) 
    1. Disconnect the E27 radio and display receiver assembly connector.
    2. Disconnect the O6 rear television camera assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      E27-11 (CA+) - O6-6 (CB+) Always Below 1 Ω
      E27-12 (V+) - O6-3 (CV+) Always Below 1 Ω
      E27-24 (V-) - O6-2 (CV-) Always Below 1 Ω
      E27-23 (CGND) - O6-5 (CGND) Always Below 1 Ω
      E27-11 (CA+) - Body ground Always 10 kΩ or higher
      E27-12 (V+) - Body ground Always 10 kΩ or higher
      E27-24 (V-) - Body ground Always 10 kΩ or higher
      E27-23 (CGND) - Body ground Always 10 kΩ or higher

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. INSPECT RADIO AND DISPLAY RECEIVER ASSEMBLY 
    1. Reconnect the E27 radio and display receiver assembly connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY594525Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard Resistance

      Tester Connection Condition Specified Condition
      E27-23 (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
      E27-11 (CA+) - E27-23 (CGND) Power switch on (ACC) 5.5 to 7.05 V
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Radio and Display Receiver Assembly)

    Result: 

    NG 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    OK 

    See step  7

  7. INSPECT REAR TELEVISION CAMERA ASSEMBLY 
    1. Reconnect the O6 rear television camera assembly connector.
    2. Using an oscilloscope, check the waveform of the rear television camera assembly.
      GTY602038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Component with harness connected
      (Radio and Display Receiver Assembly)
      GTY582164Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

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

      OK

      Waveform is similar to that shown in the illustration.

      Item Content
      Measurement terminal E27-12 (V+) - E1-7 (GND1)
      Measurement setting 200 mV/DIV., 50 μs./DIV.
      Condition Power switch on (IG), shift lever in R

      HINT: 

      • 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).
      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

    Result: 

    OK 

    REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

    Result: 

    NG 

    REPLACE REAR TELEVISION CAMERA ASSEMBLY 

    (Refer to REMOVAL [10/2014 - ] )

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