TELEMATICS 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

B002K7IE02
*a Telematics Transceiver
*b Mayday Battery

CAUTION / NOTICE / HINT

Note

Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for G-BOOK.

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


    1. Disconnect the I40 telematics transceiver connector.

    2. Disconnect the I41 mayday battery connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      I40-30 (BBI+) - I41-1 (BBO+) Always Below 1 Ω
      I40-13 (BBI-) - I41-5 (BBO-) Always Below 1 Ω
      I40-20 (CTR1) - I41-3 (BTR1) Always Below 1 Ω
      I40-21 (CTR2) - I41-4 (BTR2) Always Below 1 Ω
      I40-30 (BBI+) - Body ground Always 10 kΩ or higher
      I40-13 (BBI-) - Body ground Always 10 kΩ or higher
      I40-20 (CTR1) - Body ground Always 10 kΩ or higher
      I40-21 (CTR2) - Body ground Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG
    OK
  3. CHECK MAYDAY BATTERY


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

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      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
    B