Toyota CH-R Service Manual: Backup Battery Failure (B15CC)

Toyota CH-R Service Manual / Cellular Communication / Safety Connect System / Backup Battery Failure (B15CC)

DESCRIPTION

This DTC is set when the DCM (Telematics Transceiver) 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 (Telematics Transceiver)

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.

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PROCEDURE

CHECK DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(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 B15CC is output	A
DTC B15CC is not output	B

CHECK FOR INTERMITTENT PROBLEMS

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.

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NOTICE:

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

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CLEAR DTC

(a) Clear the DTCs.

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4.	RECHECK DTC

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

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OK:

No DTC is output.

END

5.	REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

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NOTICE:

The ignition switch must be off.
Do not swap the DCM (Telematics Transceiver) with one from another vehicle.

PERFORM DCM ACTIVATION

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