Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Backup Battery Internal Electronic Failure (B15CC49)

DESCRIPTION

This DTC is stored when the DCM (telematics transceiver) detects one of the following:

  • The mobilephone battery voltage drops or the mobilephone battery malfunctions.
  • The mobilephone battery temperature is (temporarily) high.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15CC49

Backup Battery Internal Electronic Failure

Mobilephone battery malfunction

  • Mobilephone battery
  • DCM (telematics transceiver)

CAUTION / NOTICE / HINT

NOTICE:

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

Click here

PROCEDURE

1.

CHECK DTC

(a) Turn the ignition switch to ON and wait for 10 seconds or more.

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(c) Check for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes
OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK MOBILEPHONE BATTERY

(a) Replace the mobilephone battery with a normal one and check if the same problem occurs again.

NOTICE:

  • The mobilephone battery must not be replaced while an ACN call is in progress.

    Click here

  • After replacing the mobilephone battery, perform initialization.

    Click here

(b) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(c) Recheck for DTCs and check that no DTCs are output.

Body Electrical > Telematics > Trouble Codes

OK:

No DTCs are output.

OK

PERFORM INITIALIZATION

NG

3.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (telematics transceiver) with a new one.

Click here

NOTICE:

  • The ignition switch must be off.
  • Do not exchange the DCM (telematics transceiver) with one from another vehicle.
NEXT

PERFORM DCM ACTIVATION

    READ NEXT:

     Green Indicator Remains Off

    DESCRIPTION After turning the ignition switch to ON, the DCM (telematics transceiver) will enter into self check mode. The manual (SOS) switch red indicator will illuminate for 2 seconds and turn

     Red Indicator Remains On

    DESCRIPTION This means that the DCM (telematics transceiver) has detected a malfunction in the safety connect system and stored a DTC or specific vehicle control history (RoB) Code. CAUTION / NO

     Unable To Connect To Call Center

    DESCRIPTION This may occur when the intensity of telephone radio frequency was very weak, or the safety connect system has a malfunction and a DTC is stored. CAUTION / NOTICE / HINT NOTICE: Depe

    SEE MORE:

     Installation

    INSTALLATION CAUTION / NOTICE / HINT COMPONENTS (INSTALLATION) Procedure Part Name Code 1 BRAKE ACTUATOR BRACKET CUSHION 44547B - - - 2 NO. 1 BRAKE

     Removal

    REMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 BACK DOOR UPPER PANEL TRIM ASSEMBLY 64790B - - - 2 BACK DOOR SIDE GARNISH LH 67938A - - - 3 BACK DOOR SIDE GARNISH RH 67937

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