Subaru Crosstrek Service Manual: Dtc b2a0f backup battery degradation
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
TELEMATICS SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC B2A0E MUTE LINE CIRCUITDiagnosis start condition:When ignition switch is ON.DTC detecting condition:Any ...
Dtc u0122 lost communication with vehicle dynamics control module
TELEMATICS SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Diagnostic Trouble Code (DTC)DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULEDetected when CAN data from VDC does not ar ...
Other materials:
Installation
CONTINUOUSLY VARIABLE TRANSMISSION(TR580) > Reverse Brake AssemblyINSTALLATION1. Select a washer. Forward Clutch Assembly > ADJUSTMENT">2. Install the selected washer to the reverse brake housing.3. Install the thrust bearing to the reverse brake housing.NOTE:Face the temper color sur ...
Specification
DIFFERENTIALS > General DescriptionSPECIFICATION1. REAR DIFFERENTIALWhen replacing a rear differential assembly, select the correct one according to the following table.NOTE:• Using a different rear differential assembly will cause the drive train and tires to drag or emit abnormal noise.&b ...
Note
LIGHTING SYSTEM > Day Time Running Light SystemNOTEFor operation procedures of each component of the daytime running light system, refer to the respective section.• Headlight Assembly: Headlight Assembly">• Headlight bulb: Headlight Bulb">• Combination switch ( ...
