G-BOOK SYSTEM(w/ Telematics Transceiver), Diagnostic DTC:B15CC

DTC Code DTC Name
B15CC Backup Battery Failure

DESCRIPTION

This DTC is stored when the telematics transceiver receives a result "Defect", "High Temperature" or"Low Voltage" or cannot receive any signals during the mayday battery self check.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15CC

Backup Battery Failure

Mayday battery malfunction

  • Mayday battery

  • Harness or connector

  • Telematics transceiver

WIRING DIAGRAM

E284127E01

CAUTION / NOTICE / HINT

Tip:

When replacing the telematics transceiver, perform the vehicle contract setting.

Click here

PROCEDURE

  1. CHECK DTC OUTPUT

    1. Clear the DTCs.

      Click here

      Body Electrical > Navigation System > Clear DTCs

    2. Recheck for DTCs and check if the same DTC is output again.

      Click here

      Body Electrical > Navigation System > Trouble Codes

    Result

    Result

    Proceed to

    B15CC is not output.

    A

    B15CC is output.

    B
    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

  2. CHECK HARNESS AND CONNECTOR (TELEMATICS TRANSCEIVER - MAYDAY BATTERY)

    1. Disconnect the G56 telematics transceiver connector.

    2. Disconnect the G2 mayday battery connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      G56-30 (BBI+) - G2-1 (BBO+)

      Always

      Below 1 Ω

      G56-13 (BBI-) - G2-5 (BBO-)

      Always

      Below 1 Ω

      G56-20 (CTR1) - G2-3 (BTR1)

      Always

      Below 1 Ω

      G56-21 (CTR2) - G2-4 (BTR2)

      Always

      Below 1 Ω

      G56-30 (BBI+) - Body ground

      Always

      10 kΩ or higher

      G56-13 (BBI-) - Body ground

      Always

      10 kΩ or higher

      G56-20 (CTR1) - Body ground

      Always

      10 kΩ or higher

      G56-21 (CTR2) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK MAYDAY BATTERY

    1. Replace the mayday battery with a normal one and check if the same problem occurs again.

      Click here

      1. Clear the DTCs.

        Click here

        Body Electrical > Navigation System > Clear DTCs

      2. Recheck for DTCs and check if the same DTC is output again.

        Click here

        Body Electrical > Navigation System > Trouble Codes

    Result

    Result

    Proceed to

    B15CC is not output.

    A

    B15CC is output.

    B
    A

    END (MAYDAY BATTERY IS DEFECTIVE)

    B

    REPLACE TELEMATICS TRANSCEIVER

    Click here