PARKING ASSIST MONITOR 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

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. 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

A01NEUHE01

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the multi-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 HARNESS AND CONNECTOR (PARKING ASSIST ECU - REAR TELEVISION CAMERA)


    1. A01NDS1E01

      Disconnect the F55 connector from the parking assist ECU.

    2. A01NI0EE04

      Disconnect the Y14 connector from the rear television camera assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F55-11 (CV-) - Y14-1 (CV-) Always Below 1 Ω
      F55-12 (CV+) - Y14-2 (CV+) Always Below 1 Ω
      F55-14 (CB+) - Y14-4 (CB+) Always Below 1 Ω
      F55-11 (CV-) - Body ground Always 10 kΩ or higher
      F55-12 (CV+) - Body ground Always 10 kΩ or higher
      F55-13 (CGND) - Body ground Always 10 kΩ or higher
      F55-14 (CB+) - Body ground Always 10 kΩ or higher
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Parking Assist ECU)
      *2

      Front view of wire harness connector

      (to Rear Television Camera Assembly)

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A01NEXVE01
      Text in Illustration
      *1

      Component with harness connected

      (Parking Assist ECU)

      Reconnect the F55 connector to the parking assist ECU.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F55-11 (CV-) - Body ground Always Below 1 Ω
      F55-13 (CGND) - Body ground Always Below 1 Ω

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

  3. CHECK REAR TELEVISION CAMERA ASSEMBLY (CB+, CGND)


    1. Disconnect the Y14 connector from the rear television camera assembly.

    2. A01NI0EE03
      Text in Illustration
      *1

      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
      Y14-3 (CGND) - Y14-4 (CB+)

      Power switch on (IG)

      Shift lever in R

      		 5.8 to 7.0 V

    NG

    REPLACE PARKING ASSIST ECU Click here

    OK

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


    1. Reconnect the Y14 connector to the rear television camera assembly.

    2. A01NFWRE01

      Reconnect the F54 and F55 connectors to the parking assist ECU.

    3. A01NFQZE02
      Text in Illustration
      *1

      Component with harness connected

      (Parking Assist ECU)
      *2 Waveform 1 (under normal conditions)
      *3 Waveform 2 (camera lens is covered, blacking out the screen)
      *4 Synchronized Signal
      *5 Video Waveform

      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) F55-12 (CV+) - F54-3 (GND1)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Power switch on (IG), shift lever in R

      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