Subaru Crosstrek Service Manual: Dtc b2a0c dcm internal fault

DIAGNOSIS START CONDITION:

When ignition switch is ON.

DTC DETECTING CONDITION:

• Main microcomputer and communication circuit IC cannot communicate. (Defective IPC)

• SIM (communication chip) cannot be read. (Defective SIM)

• Telematics function cannot be used.

• RED LED illuminates.

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

1.CHECK DTC.

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

Is DTC B2A0C displayed? (Current malfunction)

Replace the DCM. Data Communication Module">

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.

Dtc b2a0b green led circuit

Dtc b2a0d airbag signal

Other materials:

Removal
FUEL INJECTION (FUEL SYSTEMS)(H4DO) > Fuel Filler PipeREMOVALWARNING:Place “NO OPEN FLAMES” signs near the working area.CAUTION:Be careful not to spill fuel.1. Release the fuel pressure. Fuel > PROCEDURE">2. Drain fuel. Fuel > PROCEDURE">3. Disconnect the groun ...

Removal
EXTERIOR/INTERIOR TRIM > Lower Inner TrimREMOVALCAUTION:• Before handling the airbag system components, refer to “CAUTION” of “General Description” in “AIRBAG SYSTEM”. General Description > CAUTION">• Airbag system satellite safing senso ...

Seat ventilation
The Subaru Ascent is equipped with seat ventilation for the front seats, providing enhanced comfort during warm weather conditions. The seat ventilation system operates when the ignition switch is in the "ON" position. CAUTION Avoid placing heavy or sharp objects on the ventilate ...