Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012VMA
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 - 09/2019]
Title: CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: B15EC; Backup Battery Degradation; 2018 - 2019 MY Camry [03/2017 - 09/2019]

DTC

B15EC

Backup Battery Degradation

DESCRIPTION

This DTC is set when the DCM (Telematics Transceiver) detects either of the following conditions.

  • The BUB (Back-Up Battery) charge level becomes less than the criteria.
  • The BUB (Back-up Battery) was used for Automatic Collision Notification (ACN).

When this DTC is set, the BUB (Back-Up Battery) must be replaced.

BUB (Back-Up Battery) degradation DTC B15EC is not reported in deactive mode.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

B15EC

Backup Battery Degradation

BUB (Back-Up Battery) is used up.

BUB (Back-Up Battery)

CAUTION / NOTICE / HINT

NOTICE:

  • If this DTC is set, be certain to replace the BUB (Back-Up Battery) with a new one.
  • After the BUB (Back-Up Battery) is replaced, it is necessary to clear this DTC.
  • The BUB (Back-Up Battery) must not be replaced while an ACN call is in progress.

    Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: ACN CALL END

HINT:

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

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; CELLULAR COMMUNICATION: SAFETY CONNECT SYSTEM: HEALTH CHECK

PROCEDURE

1.

CHECK DTC

(a) Turn the engine switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the engine switch on (IG) and wait for 10 seconds.

(d) Turn the Techstream on.

(e) Clear the DTCs.

Body Electrical > Telematics > Clear DTCs

(f) Recheck for DTCs.

Body Electrical > Telematics > Trouble Codes

Result

Proceed to

DTC B15EC is output

A

DTC B15EC is not output

B

A

REPLACE BUB (BACK-UP BATTERY)

B

CHECK FOR INTERMITTENT PROBLEMS 2018 MY Camry [03/2017 - 06/2017]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2018 MY Camry [06/2017 - 08/2018]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING 2019 MY Camry [08/2018 - 09/2019]; INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING