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PARKING ASSIST MONITOR SYSTEM, Diagnostic DTC:C1621, C1622

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DTC Code DTC Name
C1621 Back Camera Power Supply Failure
C1622 Open or Short Circuit in Back Camera Signal
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DESCRIPTION

These DTCs are stored if the multi-media module receiver assembly judges that the signals or lines between the multi-media module receiver assembly and the television camera assembly are not normal as a result of its self check.

DTC Code DTC Detection Condition Trouble Area
C1621 Television camera power supply failure

  • Harness or connector

  • Television camera assembly

  • Luggage electrical key switch

  • Multi-media module receiver assembly
C1622 Open or short in the television camera signal circuit
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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

  • When "System initializing" is displayed on the accessory meter assembly after disconnecting the cable from the negative (-) auxiliary 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).

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PROCEDURE


  1. Click here

    CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - LUGGAGE ELECTRICAL KEY SWITCH AND BODY GROUND)


    1. Disconnect the L164 multi-media module receiver assembly connector.

    2. Disconnect the S101 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
      L164-12 (GND1) - Body ground Always Below 1 Ω
      L164-18 (V+) - S101-7 (CV+) Always Below 1 Ω
      L164-19 (V-) - S101-2 (CV-) Always Below 1 Ω
      L164-39 (CA+) - S101-6 (CB+) Always Below 1 Ω
      L164-40 (CGND) - S101-1 (CGND) Always Below 1 Ω
      L164-18 (V+) - Body ground Always 10 kΩ or higher
      L164-19 (V-) - Body ground Always 10 kΩ or higher
      L164-39 (CA+) - Body ground Always 10 kΩ or higher
      L164-40 (CGND) - Body ground Always 10 kΩ or higher

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    CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY (CA+, CGND)


    1. A01H13JE46

      Reconnect the multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L164-40 (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
      L164-39 (CA+) - L164-40 (CGND) Power switch on (READY), shift lever in R 5.5 to 7.05 V
      Table 1. Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

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    CHECK TELEVISION CAMERA ASSEMBLY (CV+, CGND)


    1. A01GX4LE08

      Reconnect the S101 television camera assembly connector.

      Table 2. Text in Illustration
      *a

      Component with harness connected

      (Multi-media Module Receiver Assembly)

      		 *b Waveform A
      *c Waveform B *d Synchronization Signal
      *e Video Waveform - -

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

      Item Content
      Terminal No. (Symbol) L164-18 (V+) - L164-40 (CGND)
      Tool Setting 0.2 V/DIV., 50 μs/DIV.
      Condition

      Waveform A: Power switch on (READY), shift lever in R (camera lens is not covered, displaying an image)

      Waveform B: Power switch on (READY), shift lever in R (camera lens is covered, blacking out the screen)
      Tip:

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

      OK
      Waveform is as shown in the illustration.

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    CHECK LUGGAGE ELECTRICAL KEY SWITCH (CAMERA CIRCUIT)

    Table 3. Text in Illustration
    *a

    Front view of Luggage Electrical Key Switch

    (Wire Harness Side)

    		 *b

    Front view of Luggage Electrical Key Switch

    (Television Camera Assembly Side)

    1. Disconnect the luggage electrical key switch connectors.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S101-1 (CGND) - A-5 (CGND) Always Below 1 Ω
      S101-1 (CGND) - A-1 (CURT) Always Below 1 Ω
      S101-2 (CV-) - A-2 (CV-) Always Below 1 Ω
      S101-6 (CB+) - A-6 (CB+) Always Below 1 Ω
      S101-7 (CV+) - A-3 (CV+) Always Below 1 Ω
      S101-1 (CGND) - Body ground Always 10 kΩ or higher
      S101-2 (CV-) - Body ground Always 10 kΩ or higher
      S101-6 (CB+) - Body ground Always 10 kΩ or higher
      S101-7 (CV+) - Body ground Always 10 kΩ or higher

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    REPLACE MULTI-MEDIA MODULE RECEIVER ASSEMBLYClick here

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    REPAIR OR REPLACE HARNESS OR CONNECTOR

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    REPLACE TELEVISION CAMERA ASSEMBLYClick here

  8. Click here

    REPLACE LUGGAGE ELECTRICAL KEY SWITCHClick here