Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b2241 can communication

Subaru Legacy BN/BS (2015-2019) Service Manual / Infotainment system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc b2241 can communication

DTC DETECTING CONDITION:

Detected when there has been no proper communication in 10 seconds with the driver control of serial communication between CAN microcomputer and main microcomputer.

TROUBLE SYMPTOM:

Screen display does not link with combination meter or vehicle.

STEP	CHECK	YES	NO
1.CHECK AUDIO (7-INCH DISPLAY) OR NAVIGATION UNIT. 1) Turn the ignition switch to OFF. 2) Turn the ignition switch to ACC.	Is the audio (7-inch display) or navigation unit activated-	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. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2241 CAN COMMUNICATION
2.CHECK DTC. Inspect LAN system. Basic Diagnostic Procedure > PROCEDURE	Is there any fault-	Perform the diagnosis according to diagnosis for LAN system.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2241 CAN COMMUNICATION
3.CHECK AUDIO (7-INCH DISPLAY) OR NAVIGATION UNIT. 1) Perform the Clear Memory Mode. Clear Memory Mode 2) Turn the ignition switch to OFF > ON. 3) Read the DTC again. Read Diagnostic Trouble Code (DTC)	Is DTC B2241 displayed- (Current malfunction)	Replace the audio (7-inch display) or navigation unit. Audio Navigation Body	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. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.

Dtc b2242 uart communication

DTC DETECTING CONDITION:Regular communication with A/C panel (20 ms) cannot be established for 10 seconds.TROUBLE SYMPTOM:• A/C operation cannot be activated using the voice control.• Time ...

Dtc u1232 lost communication with rear/side radar control module

Detected when CAN data from the radar sensor does not arrive.NOTE:Perform the diagnosis for LAN system. Basic Diagnostic Procedure > PROCEDURE ...

Other materials:

Basic diagnostic procedure procedure
CAUTION:• Subaru Select Monitor kit is required for reading DTC, performing diagnosis and reading current data.• Before removal or installation, be sure to remove any foreign matter (dust, moisture, oil, etc.).• Registration of immobilizer may be needed after the replacement of con ...