Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b2a02 lte2 antenna circuit

Subaru Legacy BN/BS (2015-2019) Service Manual / Telematics system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc b2a02 lte2 antenna circuit

DIAGNOSIS START CONDITION:

When ignition switch is ON.

DTC DETECTING CONDITION:

Any of the followings continues for 5 seconds or more.

• LTE2 impedance is more than 1 M-. (Detached antenna, etc.)

• LTE2 impedance is less than 1 k-. (Short-circuited antenna, etc.)

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 B2A01 displayed- (Current malfunction)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2A02 LTE2 ANTENNA CIRCUIT	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 ANTENNA. Visually check the telematics sub antenna. Antenna	Is the telematics sub antenna OK-	Replace the DCM. Data Communication Module	Replace the telematics sub antenna. Antenna

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