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

Short in Telephone Antenna Circuit (B1573,B15CB)

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Manual (SOS) Switch Green Indicator Malfunction (B1571)

DESCRIPTION This DTC is set when the DCM (Telematics Transceiver) detects an open or short in the manual (SOS) switch green indicator circuit of the manual (SOS) switch. The manual (SOS) switch g ...

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