DTC B1101 Batt P/Supply Malfunction Cont: Wiring Diagram

Fig 1: Battery Power Supply Control - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSIS PROCEDURE CHART

Step	Check	Yes	No
1 CHECK FUSE. Turn the ignition switch to OFF. Remove the fuse (No. 7).	Is the fuse blown out?	Replace the fuse (No. 7). If the replaced fuse has blown out easily, repair the short circuit of harness between fuse (No. 7) and body integrated unit.	Go to step 2.
2 CONTINUITY CHECK OF WIRING HARNESS. Disconnect the connector (B281) from body integrated unit. Measure the voltage between body integrated unit connector and chassis ground. Connector & terminal (B281) No. 2 (+) - Chassis ground (-):	Is the voltage 9 - 15 V?	Go to step 3.	Repair the harness for open or shorted circuit between body integrated unit and fuse.
3 CHECK POOR CONTACT OF CONNECTORS.	Is there poor contact in body integrated unit connector?	Repair the poor contact of connector.	Go to step 4.
4 CHECK BODY INTEGRATED UNIT HARNESS. Connect all connectors. Perform the Clear Memory Mode. Read DTC.	Is the same DTC displayed?	Replace the body integrated unit. Refer to BODY INTEGRATED UNIT .	Temporary poor contact occurs.