Subaru Crosstrek Service Manual: Dtc b2a10 battery voltage high

Diagnosis start condition:

When ignition switch is ON.

DTC detecting condition:

DCM battery power supply input of 16 V or more continues for 5 seconds.

Trouble symptom:

RED LED illuminates.

CAUTION:

CommCheck is required after replacing the DCM. Telematics System > OPERATION">

1.CHECK DTC.

Read the DTC. Diagnostic Code(s) Display">

Is DTC B2A10 displayed? (Current malfunction)

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2A10 BATTERY VOLTAGE HIGH">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 CURRENT DATA.

Check «Battery Voltage» of «Data Monitor». Read Current Data">

Is «Battery Voltage» OK?

Replace the DCM. Data Communication Module">

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2A10 BATTERY VOLTAGE HIGH">Go to Step 3.

3.CHECK BATTERY.

Check the battery unit. Battery > INSPECTION">

Is the battery OK?

Replace the DCM. Data Communication Module">

Replace the battery. Battery">

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