Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b2a0c dcm internal fault

Subaru Legacy BN/BS (2015-2019) Service Manual / Telematics system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / 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)

TROUBLE SYMPTOM:

• Telematics function cannot be used.

• 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 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 b2a0d airbag signal

DIAGNOSIS START CONDITION:When ignition switch is ON.DTC DETECTING CONDITION:Either the regular signal or collision signal cannot be detected from the airbag CM for at least 2 seconds.TROUBLE SYMPTOM: ...

Dtc b2a0b green led circuit

DIAGNOSIS START CONDITION: When ACC is ON.DTC DETECTING CONDITION:• Current in LED is less than 1 mA. (Improper LED connection, etc.)• Current is more than 200 mA for at least 50 ms. (Shor ...

Other materials:

Removal
1. EGR PIPE A1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the collector cover.(1) Carefully pull up the rear of collector cover at two positions (A).(2) Carefully pull up the front of collector cover at two positions (B) while moving it forward.3. Loosen the clamp (A) securi ...