G-BOOK SYSTEM(w/ Telematics Transceiver) "NCON" is Displayed in "DCM" on the System Check Mode Screen

DTC Code DTC Name
"NCON" is Displayed in "DCM" on the System Check Mode Screen

DESCRIPTION

If the display and navigation module display cannot detect the DCM for a certain period of time (15 seconds) after the engine switch is turned on (ACC) and the display and navigation module display confirms that the information is missing by checking past DCM recognition information (registered information), "NCON" will be displayed.

The G-BOOK system uses USB communication between devices. If an open, short, short to +B or short to ground occurs in the USB circuit, communication is interrupted and the G-BOOK system will not operate normally.

WIRING DIAGRAM

E203064E04

CAUTION / NOTICE / HINT

Note:

Inspect the fuse for circuits related to this system before performing the following inspection procedure.

Tip:

When replacing the display and navigation module display or the telematics transceiver, perform the vehicle contract setting (Click here).

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - BATTERY AND BODY GROUND)

    1. E192516C02

      *a

      Front view of wire harness connector

      (to Telematics Transceiver)

      Disconnect the G56 telematics transceiver connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G56-4 (E) - 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

      G56-1 (+B) - Body ground

      Engine switch off

      11 to 14 V

      G56-7 (IG2) - Body ground

      Engine switch on (IG)

      11 to 14 V

      G56-8 (ACC) - Body ground

      Engine switch on (ACC)

      11 to 14 V

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  2. INSPECT DISPLAY AND NAVIGATION MODULE DISPLAY (USBV, USBG)

    1. E203066C01

      *a

      Component without harness connected

      (Display and Navigation Module Display)

      Disconnect the H35 display and navigation module display connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H35-2 (USBG) - 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

      H35-4 (USBV) - H35-2 (USBG)

      Engine switch on (ACC)

      5 V

      Result

      Result

      OK

      NG
    NG

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY

    Click hereClick here

    OK

  3. CHECK HARNESS AND CONNECTOR (DISPLAY AND NAVIGATION MODULE DISPLAY - TELEMATICS TRANSCEIVER)

    1. Check the installation condition.

      1. Check the USB communication cable (digital communication cable) between the display and navigation module display and the telematics transceiver for any installation or connection problems.

    2. Disconnect the H35 display and navigation module display connector.

    3. Disconnect the H36 telematics transceiver connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H35-4 (USBV) - H36-4 (USBV)

      Always

      Below 1 Ω

      H35-2 (USBG) - H36-2 (USBG)

      Always

      Below 1 Ω

      H35-1-2 (USB+) - H36-1-2 (USB+)

      Always

      Below 1 Ω

      H35-1-1 (USB-) - H36-1-1 (USB-)

      Always

      Below 1 Ω

      H35-1-3 (USBS) - H36-1-3 (USBS)

      Always

      Below 1 Ω

      H35-4 (USBV) - Body ground

      Always

      10 kΩ or higher

      H35-2 (USBG) - Body ground

      Always

      10 kΩ or higher

      H35-1-2 (USB+) - Body ground

      Always

      10 kΩ or higher

      H35-1-1 (USB-) - Body ground

      Always

      10 kΩ or higher

      H35-1-3 (USBS) - Body ground

      Always

      10 kΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TELEMATICS TRANSCEIVER

    1. Replace the telematics transceiver with a normal one.

      Click hereClick here

    2. Perform inspections indicated on the System Check Mode screen to confirm the DCM inspection result.

      Click here

      Result

      Result

      Proceed to

      "OK" displayed for "DCM" on System Check Mode screen

      A

      "NCON" displayed for "DCM" on System Check Mode screen

      B
    A

    END

    B

    REPLACE DISPLAY AND NAVIGATION MODULE DISPLAY

    Click hereClick here