TELEMATICS SYSTEM, 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. DTC Detection Condition Trouble Area
B15CC Mayday battery malfunction

  • Mayday battery

  • Harness or connector

  • Telematics transceiver

WIRING DIAGRAM

B00186HE04
*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 Click here.

PROCEDURE


  1. CHECK DTC OUTPUT


    1. Clear the DTCs Click here.

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

      OK
      B15CC is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

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


    1. Disconnect the P2 telematics transceiver connector.

    2. Disconnect the j1 mayday battery connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      P2-30 (BBI+) - j1-1 (BBO+) Always Below 1 Ω
      P2-13 (BBI-) - j1-5 (BBO-) Always Below 1 Ω
      P2-20 (CTR1) - j1-3 (BTR1) Always Below 1 Ω
      P2-21 (CTR2) - j1-4 (BTR2) Always Below 1 Ω
      P2-30 (BBI+) - Body ground Always 10 kΩ or higher
      P2-13 (BBI-) - Body ground Always 10 kΩ or higher
      P2-20 (CTR1) - Body ground Always 10 kΩ or higher
      P2-21 (CTR2) - Body ground Always 10 kΩ or higher

    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.

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

        OK
        B15CC is not output.

    OK

    END (MAYDAY BATTERY IS DEFECTIVE)

    NG

    REPLACE TELEMATICS TRANSCEIVER Click here