INTELLIGENT PARKING ASSIST SYSTEM, Diagnostic DTC:C1621, C1622

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

DESCRIPTION

These DTCs are stored if the parking assist ECU judges as a result of its self check that the signals or signal lines between the parking assist ECU and rear television camera assembly are not normal.

DTC No. DTC Detection Condition Trouble Area
C1621 Rear television camera power supply failure

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU
C1622 An open or short in the rear television camera signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU

WIRING DIAGRAM

A0042M2E02

INSPECTION PROCEDURE

Note


  • When the "System initializing" message is displayed on the navigation ECU sub-assembly after the auxiliary battery cable has been disconnected, 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 intelligent parking assist system may be needed Click here.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the L59 parking assist ECU connector.

    2. Disconnect the V15 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
      L59-14 (CB+) - V15-4 (CB+) Always Below 1 Ω
      L59-15 (CV+) - V15-2 (CV+) Always Below 1 Ω
      L59-37 (CGND) - V15-3 (CGND) Always Below 1 Ω
      L59-38 (CV-) - V15-1 (CV-) Always Below 1 Ω
      L59-14 (CB+) - Body ground Always 10 kΩ or higher
      L59-15 (CV+) - Body ground Always 10 kΩ or higher
      L59-37 (CGND) - Body ground Always 10 kΩ or higher
      L59-38 (CV-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING ASSIST ECU (CV-, CGND)


    1. A0043ULE06
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the L59 parking assist ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      L59-37 (CGND) - Body ground Always Below 1 Ω
      L59-38 (CV-) - Body ground Always Below 1 Ω

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (REAR TELEVISION CAMERA ASSEMBLY POWER SOURCE)


    1. Disconnect the V15 rear television camera assembly connector.

    2. A00419LE04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Rear Television Camera Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      V15-3 (CGND) - V15-4 (CB+)

      Power switch on (READY)

      Reverse (R) selected

      		 5.8 to 7.0 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  4. CHECK PARKING ASSIST ECU (CV+, GND1)


    1. Reconnect the V15 rear television camera assembly connector.

    2. A00412BE06
      Text in Illustration
      *a

      Component with harness connected

      (Parking Assist ECU)
      *b Waveform 1 (camera lens not covered, displaying an image)
      *c Waveform 2 (camera lens covered, blacking out the screen)
      *d Synchronization Signal
      *e Video Waveform

      Reconnect the L59 parking assist ECU connector.

    3. Check the waveform of the rear television camera assembly using an oscilloscope.

      Tech Tips

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

      OK
      Waveform is as shown in the illustration.
      Item Content
      Terminal No. (Symbol) L59-15 (CV+) - L60-4 (GND1)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Power switch on (READY), reverse (R) selected

      Tech Tips

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


    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY Click here

    OK

    REPLACE PARKING ASSIST ECU Click here