DTC B2220: Break The Wire Of IGN

DTC detecting condition:

There was voltage malfunction caused by poor contact of IGN power supply circuits.

Trouble symptom:

Airbag indicator does not illuminate.

NOTE: Wiring diagram:

Multi-function display (MFD) system Ref. to WIRING DIAGRAM , Multi-function Display (MFD) System.

Fig 1: Ignition Power Supply To MFD Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

Step	Check	Yes	No
1 CHECK DTC . Read the DTC of the MFD using the Subaru Select Monitor. Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .	Is DTC B2220 a current malfunction?	Go to step 2 .	Go to step 5 .
2 CHECK DTC . Turn the ignition switch to OFF. Disconnect the MFD connector and reconnect it. Turn the ignition switch to ON. Read the DTC relating the MFD using the Subaru Select Monitor. Ref. to READ DIAGNOSTIC TROUBLE CODE (DTC) .	Is DTC B2220 a current malfunction?	Go to step 3 .	Go to step 5 .
3 CHECK FUSE . Turn the ignition switch to OFF. Check the fuse.	Is the fuse OK?	Go to step 4 .	Replace the defective fuse.
4 CHECK HARNESS . Disconnect the MFD connector. Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (i122) No. 3 (+) - Chassis ground (-):	Is the voltage 8.5 - 16.5 V?	Replace the MFD. Ref. to Multi-function Display (MFD) .	Repair the harness between MFD and fuse.
5 CHECK CONNECTOR . Turn the ignition switch to OFF. Disconnect the MFD connector.	Is there poor contact of connector?	Repair or replace the poor contact of connector.	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.