Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b2a00 vin reading

Subaru Legacy BN/BS (2015-2019) Service Manual / Telematics system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc b2a00 vin reading

DIAGNOSIS START CONDITION:

When ignition switch is ON.

TROUBLE SYMPTOM:

When ignition switch is ON, VIN information (CAN) sent from ECM cannot be read.

DTC DETECTING CONDITION:

• 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 B2A00 displayed- (Current malfunction)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2A00 VIN READING	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 DTC. Check DTCs in the following systems; • Telematics Diagnostic Code(s) Display • Engine Read Diagnostic Trouble Code (DTC) Read Diagnostic Trouble Code (DTC)	Is DTC U**** displayed- (Current malfunction)	Perform the diagnosis for LAN system. Basic Diagnostic Procedure	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2A00 VIN READING
3.CHECK CURRENT DATA. Confirm VIN information from the engine OBD mode. General Scan Tool > OPERATION General Scan Tool > OPERATION	Is VIN information displayed-	Replace the DCM. Data Communication Module	Replace the ECM. Engine Control Module (ECM) Engine Control Module (ECM)

Dtc b2a01 lte1 antenna circuit

DIAGNOSIS START CONDITION:When ignition switch is ON.DTC DETECTING CONDITION:Any of the followings continues for 5 seconds or more.• LTE1 impedance is more than 1 M-. (Detached antenna, etc.)&bu ...

Dtc u0074 control module communication bus "body-can" off

Detected when CAN line abnormality is detected.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Other materials:

Inspection
1. CHECK THE MASS AIR FLOW SENSOR UNIT1. Connect the battery positive terminal to terminal No. 3 and the battery ground terminal to terminal No. 4, and connect the circuit tester positive terminal to terminal No. 5 and the circuit tester ground terminal to terminal No. 4.2. Check the voltage changes ...