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.

Click here

PROCEDURE

1.

CHECK DTC

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch ON 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 B15CC is output

A

DTC B15CC is not output

B
B

CHECK FOR INTERMITTENT PROBLEMS

A

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.

Click here

NOTICE:

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

Click here

NEXT

3.

CLEAR DTC

(a) Clear the DTCs.

Click here

NEXT

4.

RECHECK DTC

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

Click here

OK:

No DTC is output.

OK

END
NG

5.

REPLACE DCM (TELEMATICS TRANSCEIVER)

(a) Replace the DCM (Telematics Transceiver).

Click here

NOTICE:

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

PERFORM DCM ACTIVATION

    Short in Telephone Antenna Circuit (B1573,B15CB)
    DESCRIPTION These DTCs are stored when the DCM (Telematics Transceiver) detects an open or a short in the telephone and GPS antenna assembly (for Roof Side) circuit. The DCM (Telematics Transceiv ...

    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 ...

    Other materials:

    Toyota CH-R Service Manual > Door Control Transmitter(w/ Smart Key System): Removal
    REMOVAL CAUTION / NOTICE / HINT NOTICE: Take extra care when handling these precision electronic components. PROCEDURE 1. REMOVE TRANSMITTER BATTERY (a) Slide the release hook knob to remove the mechanical key as shown in the illustration. *a Hook Knob ...

    Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): Voice is not Recognized
    PROCEDURE 1. CHECK CONDITION (a) While paying attention to the condition of the spoken voice command, perform a voice recognition operation. OK: Voice command is recognized normally. HINT: When the voice command is recognized, the content of the voice ...

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0117