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 > Back Door Lock: Components
    COMPONENTS ILLUSTRATION *A w/ Package Tray Trim *B w/ Tonneau Cover *1 BACK DOOR LOCK ASSEMBLY *2 BACK DOOR LOCK COVER *3 BACK DOOR SIDE GARNISH LH *4 B ...

    Toyota CH-R Service Manual > Audio And Visual System(for Radio And Display Type): No Sound can be Heard from Speakers
    PROCEDURE 1. CHECK AUDIO SETTINGS (a) In sound output setting mode, set volume, fader and balance to the initial values and check that the sound is normal. OK: Audio system returns to normal. HINT: Sound quality adjustment measures vary according to the type ...

    Toyota C-HR (AX20) 2023-2025 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0114