PARKING ASSIST MONITOR SYSTEM(for Navigation Receiver Type), 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 television camera assembly are not normal as a result of its self check.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1622 Open or Short Circuit in Back Camera Signal Open or short in the television camera assembly signal circuit

  • Television camera assembly

  • Navigation ECU sub-assembly

  • Harness or connector

WIRING DIAGRAM

A00YVIHE08

CAUTION / NOTICE / HINT

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 - TELEVISION CAMERA ASSEMBLY)


    1. Disconnect the G49 navigation ECU sub-assembly connector.

    2. Disconnect the U6 television camera assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G49-7 (CA+) - U6-6 (CB+) Always Below 1 Ω
      G49-8 (V+) - U6-3 (CV+) Always Below 1 Ω
      G49-16 (V-) - U6-2 (CV-) Always Below 1 Ω
      G49-15 (CGND) - U6-5 (CGND) Always Below 1 Ω
      G49-7 (CA+) - Body ground Always 10 kΩ or higher
      G49-8 (V+) - Body ground Always 10 kΩ or higher
      G49-16 (V-) - Body ground Always 10 kΩ or higher
      G49-15 (CGND) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. A00YSRLC14
      *a

      Component with harness connected

      (Navigation ECU Sub-assembly)

      Reconnect the G49 navigation ECU sub-assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G49-15 (CGND) - Body ground Always Below 1 Ω
      G49-16 (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
      G49-7 (CA+) - G49-15 (CGND) Ignition switch ON, shift lever in R 5.5 to 7.05 V
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    OK

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


    1. Reconnect the U6 television camera assembly connector.

      A00YWR7C09
      *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 - -

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

      Tech Tips

      A waterproof connector is used for the television camera assembly. Therefore, inspect the waveform at the navigation ECU sub-assembly with the connector connected.

      Item Content
      Terminal No. (Symbol) G49-8 (V+) - G138-7 (GND1)
      Tool Setting 200 mV/DIV., 50 μsec./DIV.
      Condition Ignition switch ON, shift lever in R

      Tech Tips

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

      Result
      Proceed to
      Waveform is as shown in the illustration
      Waveform is not as shown in the illustration

    Waveform is as shown in the illustration

    REPLACE NAVIGATION ECU SUB-ASSEMBLY Click here

    Waveform is not as shown in the illustration

    REPLACE TELEVISION CAMERA ASSEMBLY Click here