G-BOOK SYSTEM "NCON" is Displayed in "DCM" on the System Check Mode Screen

DESCRIPTION

If the multi-media module receiver assembly cannot detect the DCM for a certain period of time (15 seconds) after the engine switch is turned on (ACC) and the multi-media module receiver assembly 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

A01EPCBE01

INSPECTION PROCEDURE

Note

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

Tech Tips

When replacing the multi-media module receiver assembly or the telematics transceiver, perform the vehicle contract setting Click here.

PROCEDURE


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


    1. A01EQREE17
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Telematics Transceiver)

      Disconnect the P2 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P2-4 (E) - Body ground Always Below 1 Ω
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      P2-1 (+B) - Body ground Always 11 to 14 V
      P2-7 (IG2) - Body ground Engine switch on (IG) 11 to 14 V
      P2-8 (ACC) - Body ground Engine switch on (ACC) 11 to 14 V

    NG
    OK
  2. CHECK MULTI-MEDIA MODULE RECEIVER ASSEMBLY (USBV, USBG)


    1. A01ENKME07
      Text in Illustration
      *1

      Component without harness connected

      (Multi-media Module Receiver Assembly)

      Disconnect the F81 multi-media module receiver assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F81-2 (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
      F81-4 (USBV) - F81-2 (USBG) Engine switch on (ACC) 4.75 to 5.25 V

    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA MODULE RECEIVER ASSEMBLY - TELEMATICS TRANSCEIVER)


    1. Check the installation condition.


      1. Check the USB communication cable (digital communication cable) between the multi-media module receiver assembly and the telematics transceiver for any installation or connection problems.

    2. Disconnect the F81 multi-media module receiver assembly connector.

    3. Disconnect the P3 telematics transceiver connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F81-1-1 (USB-) - P3-1-1 (USB-) Always Below 1 Ω
      F81-1-2 (USB+) - P3-1-2 (USB+) Always Below 1 Ω
      F81-1-3 (USBS) - P3-1-3 (USBS) Always Below 1 Ω
      F81-2 (USBG) - P3-2 (USBG) Always Below 1 Ω
      F81-4 (USBV) - P3-4 (USBV) Always Below 1 Ω
      F81-1-1 (USB-) - Body ground Always 10 kΩ or higher
      F81-1-2 (USB+) - Body ground Always 10 kΩ or higher
      F81-1-3 (USBS) - Body ground Always 10 kΩ or higher
      F81-2 (USBG) - Body ground Always 10 kΩ or higher
      P3-4 (USBV) - Body ground Always 10 kΩ or higher

    NG
    OK
  4. CHECK TELEMATICS TRANSCEIVER


    1. Replace the telematics transceiver with a normal one and check if the same problem occurs again Click here.


      1. Perform inspections indicated on the System Check Mode screen to confirm the DCM inspection result Click here.

        Result
        Result Proceed to
        "OK" is displayed in "DCM" on the System Check Mode screen. A
        "NCON" is displayed in "DCM" on the System Check Mode screen. B

    B
    A