DTC B15CC-49: Backup Battery Internal Electronic Failure [07/2022 - ]: Procedure

1. Turn the ignition switch to ON and wait for 10 seconds or more.
2. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

3. Check for DTCs and check that no DTCs are output.

   Body Electrical > Telematics > Trouble Codes 

   Result

   Proceed to
   OK
   NG

Result: 

OK 

USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2018 - ] 

Result: 

NG 

See step  2

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

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

     Refer to ACN CALL END [07/2022 - ]

   • After replacing the mobilephone battery, perform initialization.

     Refer to INITIALIZATION [07/2022 - ]

   Refer to REMOVAL [07/2022 - ]

2. Clear the DTCs.

   Body Electrical > Telematics > Clear DTCs 

3. Recheck for DTCs and check that no DTCs are output.

   Body Electrical > Telematics > Trouble Codes 

   OK

   No DTCs are output.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PERFORM INITIALIZATION. Refer to  INITIALIZATION [07/2022 - ] 

Result: 

NG 

See step  3

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

   Refer to REMOVAL [07/2022 - ]

   NOTE:

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

PERFORM DCM ACTIVATION. Refer to  DCM ACTIVATION [07/2022 - ]