PARKING ASSIST 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

This DTC 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 power supply failure

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU

C1622

Open or Short Circuit in Back Camera Signal

Open or Short Circuit in rear television camera signal

  • Harness or connector

  • Rear television camera assembly

  • Parking assist ECU

WIRING DIAGRAM

E205014E06

CAUTION / NOTICE / HINT

Note:

  • When "System initializing" is displayed on the display and navigation module display after the battery terminal 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 parking assist monitor system may be needed (Click here).

PROCEDURE

  1. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Chassis > IPA/Parking Assist Monitor > Clear DTCs

      Body Electrical > Main Body > Clear DTCs

    2. Check for DTCs.

      Click here

      Chassis > IPA/Parking Assist Monitor > Trouble Codes

      Body Electrical > Main Body > Trouble Codes

      Result

      Result

      Proceed to

      DTC is output

      A

      No DTC is output

      B
    B

    USE SIMULATION METHOD TO CHECK

    Click hereClick here

    A

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

    1. Disconnect the I2 parking assist ECU connector.

    2. Disconnect the X1 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

      I2-11 (CV-) - X1-1 (CV-)

      Always

      Below 1 Ω

      I2-12 (CV+) - X1-2 (CV+)

      Always

      Below 1 Ω

      I2-13 (CGND) - X1-3 (CGND)

      Always

      Below 1 Ω

      I2-14 (CB+) - X1-4 (CB+)

      Always

      Below 1 Ω

      I2-11 (CV-) - Body ground

      Always

      10 kΩ or higher

      I2-12 (CV+) - Body ground

      Always

      10 kΩ or higher

      I2-13 (CGND) - Body ground

      Always

      10 kΩ or higher

      I2-14 (CB+) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK PARKING ASSIST ECU

    1. E236916C01

      *a

      Component without harness connected

      (Parking Assist ECU)

      Disconnect the I2 parking assist ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      I2-11 (CV-) - Body ground

      Always

      Below 1 Ω

      I2-13 (CGND) - Body ground

      Always

      Below 1 Ω

      Result

      Result

      OK

      NG
    NG

    REPLACE PARKING ASSIST ECU

    Click here

    OK

  4. CHECK PARKING ASSIST ECU

    1. E227664C01

      *a

      Front view of wire harness connector

      (to Rear Television Camera Assembly)

      Disconnect the X1 rear television camera assembly connector.

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      X1-4 (CB+) - X1-3 (CGND)

      Engine switch on (IG), shift lever in R

      5.8 to 7.05 V

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  5. CHECK REAR TELEVISION CAMERA ASSEMBLY

    1. Using an oscilloscope, check the waveform.

      E167080C01

      *a

      Component with harness connected

      (Parking Assist ECU)

      -

      -
      Table 1. Measurement Condition

      Item

      Content

      Tester Connection

      I2-12 (CV+) - I2-11 (CV-)

      Tool Setting

      0.2 V/DIV., 50 μs/DIV.

      Condition

      • Engine switch on (IG), shift lever in R*1

      • Engine switch on (IG), shift lever in R, screen blacked out by covering camera lens*2

      OK

      Waveform is as shown in illustration.

      Result

      Result

      OK

      NG
    OK

    REPLACE PARKING ASSIST ECU

    Click here

    NG

  6. REPLACE REAR TELEVISION CAMERA ASSEMBLY

    1. Replace the rear television camera assembly with a new or normally function one.

      Click here

      Result

      Result

      NEXT
    NEXT

  7. CHECK FOR DTC

    1. Clear the DTCs.

      Click here

      Chassis > IPA/Parking Assist Monitor > Clear DTCs

      Body Electrical > Main Body > Clear DTCs

    2. Check for DTCs.

      Click here

      Chassis > IPA/Parking Assist Monitor > Trouble Codes

      Body Electrical > Main Body > Trouble Codes

      Result

      Result

      Proceed to

      DTC is output

      A

      No DTC is output

      B
    A

    REPLACE PARKING ASSIST ECU

    Click here

    B

    END (REAR TELEVISION CAMERA ASSEMBLY WAS DEFECTIVE)