TELEMATICS SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)
DTC B2A0F BACKUP BATTERY DEGRADATION
DIAGNOSIS START CONDITION:
When ignition switch is ON.
DTC DETECTING CONDITION:
• Backup battery voltage of charger is low.
• Charging attempt of 2 V or more fails after the backup battery has been charged for 1 hour continuously.
• Full charging is not achieved after the backup battery is charged for 7 hours in total (not continuously).
TROUBLE SYMPTOM:
RED LED illuminates.
CAUTION:
CommCheck is required after replacing the DCM. Telematics System > OPERATION">
| STEP | CHECK | YES | NO |
1.CHECK DTC.
Read the DTC. Diagnostic Code(s) Display">
Is DTC B2A0F displayed? (Current malfunction)
Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2A0F BACKUP BATTERY DEGRADATION">Go to Step 2.
Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again.
In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
2.CHECK THE BACKUP BATTERY.
Check the backup battery unit. Data Communication Module">
Is the backup battery OK?
Replace the DCM. Data Communication Module">
Replace the backup battery. Data Communication Module">
Dtc b2a0e mute line circuit
Dtc u0122 lost communication with vehicle dynamics control moduleHow to change the source
The AUX operation screen can be
reached by the following methods:
Connect a portable audio device. Refer
to "Connecting and disconnecting a USB
memory/portable device"
Select the "AUX" key on the source
select screen. Refer to "Selecting an audio
source"
Audio level settings
You c ...
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