Last Modified: 01-30-2024 6.11:8.1.0 Doc ID: RM100000001EH04
Model Year Start: 2019 Model: RAV4 Prod Date Range: [11/2018 - 10/2019]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15CC; Backup Battery Failure; 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]

DTC

B15CC

Backup Battery Failure

DESCRIPTION

This DTC is set when the DCM (Telephone Transceiver Assembly) detects one of the following:

  • The BUB (Back-Up Battery) voltage drops or the BUB (Back-Up Battery) malfunctions.
  • The BUB (Back-Up Battery) temperature is (temporarily) high.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15CC

Backup Battery Failure

BUB (Back-Up Battery) malfunction

  • BUB (Back-Up Battery)
  • DCM (Telephone Transceiver Assembly)

CAUTION / NOTICE / HINT

HINT:

Before performing this diagnostic procedure, make sure to perform Health Check and confirm that the DCM/VIN registration information is correct.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: HEALTH CHECK

PROCEDURE

1.

CHECK DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON and wait for 10 seconds.

(d) Turn the Techstream on.

(e) Clear the DTCs.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Clear DTCs

(f) Recheck for DTCs.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Trouble Codes

Result

Proceed to

DTC B15CC is output

A

DTC B15CC is not output

B

B

CHECK FOR INTERMITTENT PROBLEMS

A

2.

REPLACE BUB (BACK-UP BATTERY)

(a) Replace the BUB (Back-Up Battery) with a known good one and check if the same problem occurs again.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: MAYDAY BATTERY: REMOVAL

NOTICE:

The BUB (Back-Up Battery) must not be replaced while an ACN call is in progress.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: ACN CALL END

NEXT

3.

CLEAR DTC

(a) Clear the DTCs.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Clear DTCs

NEXT

4.

RECHECK DTC

(a) Recheck for DTCs and check if the same trouble occurs again.

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: DTC CHECK / CLEAR

Body Electrical > Telematics > Trouble Codes

OK:

No DTC is output.

OK

END

NG

5.

REPLACE DCM (TELEPHONE TRANSCEIVER ASSEMBLY)

(a) Replace the DCM (Telephone Transceiver Assembly).

Click here 2019 MY RAV4 RAV4 HV [11/2018 - 10/2019]; CELLULAR COMMUNICATION: DCM(TELEMATICS TRANSCEIVER): REMOVAL

NOTICE:

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

PERFORM DCM ACTIVATION