PARKING ASSIST MONITOR SYSTEM, Diagnostic DTC:C1622

DTC Code DTC Name
C1622 Open or Short Circuit in Back Camera Signal

DESCRIPTION

This DTC is stored if the navigation ECU sub-assembly judges that the signals or signal lines between the navigation ECU sub-assembly and the rear television camera assembly are not normal as a result of its self check.

DTC No. DTC Detection Condition Trouble Area
C1622 Open or short in the rear television camera assembly signal circuit

  • Harness or connector

  • Rear television camera assembly

  • Navigation ECU sub-assembly

WIRING DIAGRAM

A01HQKNE01

INSPECTION PROCEDURE

Note


  • When "System initializing" is displayed on the navigation ECU sub-assembly after disconnecting the cable from the negative (-) 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.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (NAVIGATION ECU SUB-ASSEMBLY - REAR TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the I66 connector from the navigation ECU sub-assembly.

    2. Disconnect the T6 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
      I66-7 (CA+) - T6-6 (CB+) Always Below 1 Ω
      I66-8 (V+) - T6-3 (CV+) Always Below 1 Ω
      I66-15 (CGND) - T6-5 (CGND) Always Below 1 Ω
      I66-16 (V-) - T6-2 (CV-) Always Below 1 Ω
      I66-7 (CA+) - Body ground Always 10 kΩ or higher
      I66-8 (V+) - Body ground Always 10 kΩ or higher
      I66-15 (CGND) - Body ground Always 10 kΩ or higher
      I66-16 (V-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. CHECK NAVIGATION ECU SUB-ASSEMBLY (V-, CGND, CA+)


    1. A01HPUFE03
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU sub-assembly)

      Reconnect the I66 connector to the navigation ECU sub-assembly.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I66-15 (CGND) - Body ground Always Below 1 Ω
      I66-16 (V-) - 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
      I66-7 (CA+) - I66-15 (CGND)

      Engine switch on (IG)

      Shift lever in R

      		 5.5 to 7.05 V

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

  3. CHECK NAVIGATION ECU SUB-ASSEMBLY (V+, GND1)


    1. Reconnect the T6 connector to the rear television camera assembly.

    2. A01HOLVE01
      Text in Illustration
      *a

      Component with harness connected

      (Navigation ECU sub-assembly)
      *b Waveform 1 (camera lens is not covered, displaying an image)
      *c Waveform 2 (camera lens is covered, blacking out the screen)
      *d Synchronization Signal
      *e Video Waveform

      Reconnect the I66 connector to the navigation ECU sub-assembly.

    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 navigation ECU sub-assembly with the connector connected.

      OK
      Waveform is as shown in the illustration.
      Item Content
      Terminal No. (Symbol) I66-8 (V+) - I66-7 (GND1)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Engine 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 NAVIGATION ECU SUB-ASSEMBLY Click here