DESCRIPTION This DTC is set when the DCM (Telematics Transceiver) detects either of the following conditions.
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.
CAUTION / NOTICE / HINT NOTICE:
HINT: Before performing this diagnostic procedure, make sure to perform Health Check and confirm that the DCM/VIN registration information is correct. Click here
PROCEDURE
(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
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Toyota Avalon Service & Repair Manual > Cellular Communication: Back-up Battery
ComponentsCOMPONENTS ILLUSTRATION *1 BACK-UP BATTERY *2 BATTERY COVER InstallationINSTALLATION PROCEDURE 1. INSTALL BACK-UP BATTERY (a) Install the back-up battery shown in the illustration. Install in this Direction NOTICE: Make sure that the back-up battery is securely installed. (b) Connect the ...