Toyota 4Runner: Backup Battery Degradation (B15EC)

Toyota 4Runner Service Manual / Audio / Visual / Telematics / Cellular Communication / Safety Connect System / Backup Battery Degradation (B15EC)

DESCRIPTION

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

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

When this DTC is stored, the BUB (Back-Up Battery) must be replaced. BUB (Back-Up Battery) degradation DTC B15EC is not reported in the deactive mode.

DTC Code	DTC Detection Condition	Trouble Area
B15EC	The BUB (Back-Up Battery) is deteriorated.	BUB (Back-Up Battery)

CAUTION / NOTICE / HINT

NOTICE:

If this DTC is stored, be sure 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.

PROCEDURE

1.	CHECK FOR DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(d) Perform "Health Check" and check for current DTCs (See page ).

Result

Result	Proceed to
DTC B15EC is output	A
DTC B15EC is not output	B

REPLACE BUB (BACK-UP BATTERY)

CHECK FOR INTERMITTENT PROBLEMS

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DIAGNOSTIC TROUBLE CODE CHART HINT: If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" bel ...

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