PANORAMIC VIEW MONITOR SYSTEM, Diagnostic DTC:C1621 and C1622

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

DESCRIPTION

DTC C1621 is stored if the parking assist ECU determines that the input/output signal communication with the rear television camera assembly is abnormal.

DTC C1622 is 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 the rear television camera assembly are not normal.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1621

Back Camera Power Supply Failure

Rear television camera assembly power supply malfunction

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU

C1622

Open or Short Circuit in Back Camera Signal

Open or short in the rear television camera signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU

WIRING DIAGRAM

E297862E07

CAUTION / NOTICE / HINT

Note:

  • When "!" mark is displayed on the multi-display after the cable is disconnected 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 panoramic view monitor system may be needed.

    Click here

PROCEDURE

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

    1. Disconnect the a1 parking assist ECU connector.

    2. Disconnect the c3 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

      a1-3 (CB+) - c3-6 (CB+)

      Always

      Below 1 Ω

      a1-1 (CV+) - c3-3 (CV+)

      Always

      Below 1 Ω

      a1-2 (CV-) - c3-2 (CV-)

      Always

      Below 1 Ω

      a1-9 (CGND) - c3-5 (CGND)

      Always

      Below 1 Ω

      a1-3 (CB+) or c3-6 (CB+) - Body ground

      Always

      10 kΩ or higher

      a1-1 (CV+) or c3-3 (CV+) - Body ground

      Always

      10 kΩ or higher

      a1-2 (CV-) or c3-2 (CV-) - Body ground

      Always

      10 kΩ or higher

      a1-9 (CGND) or c3-5 (CGND) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK PARKING ASSIST ECU (CB+, CGND)

    1. E272332C60

      *a

      Component with harness connected

      (Parking Assist ECU)

      Remove the parking assist ECU with the connector still connected.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      a1-9 (CGND) - Body ground

      Always

      Below 1 Ω

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      a1-3 (CB+) - a1-9 (CGND)

      Powr switch on (IG)

      5.5 to 7.05 V

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE PARKING ASSIST ECU

    Click here

    OK

  3. CHECK REAR TELEVISION CAMERA ASSEMBLY

    1. Remove the parking assist ECU with the connector still connected.

      E272333C61

      *a

      Component with harness connected

      (Parking Assist ECU)

      *b

      Waveform 1

      *c

      Waveform 2

      *d

      Synchronization Signal

      *e

      Video Waveform

      -

      -

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

      Tip:

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

      Table 1. Measurement Condition

      Item

      Content

      Terminal No. (Symbol)

      a1-1 (CV+) - a1-9 (CGND)

      Tool Setting

      200 mV/DIV., 50 μsec./DIV.

      Condition

      • Waveform 1: Power switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens not covered, displaying image

      • Waveform 2: Power switch on (IG), telltale light assembly (panoramic view monitor main switch) on, camera lens covered, blacking out screen

      OK

      Waveform is as shown in the illustration.

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE PARKING ASSIST ECU

    Click here

    NG

    REPLACE REAR TELEVISION CAMERA ASSEMBLY

    Click here