Check Security Indicator Light Circuit: Wiring Diagram

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Security Indicator Light Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE CHART

Step	Check	Yes	No
1 CHECK FUSE. Remove the ignition key from ignition switch. Check the fuse (M/B No. 8).	Is the fuse OK?	Go to step 2 .	Replace the fuse. If the replaced fuse blows out easily, repair the short circuit in the harness between the fuse and body integrated unit.
2 CHECK SECURITY INDICATOR LIGHT. Disconnect the connector from body integrated unit. Connect the resistor (100 Ω) between the body integrated unit connector terminal (i84) No. 10 and chassis ground.	Does the security indicator light illuminate?	Go to step 3 .	Go to step 5 .
3 CHECK BODY INTEGRATED UNIT GROUND CIRCUIT. Measure the resistance between the body integrated unit connector terminal and chassis ground. Connector & terminal (i84) No. 28 - Chassis ground: (B280) No. 17 - Chassis ground: (B281) No. 20 - Chassis ground: (B279) No. 27 - Chassis ground:	Is the resistance less than 10 Ω?	Go to step 4 .	Repair the open circuit of the body integrated unit ground circuit.
4 CHECK BODY INTEGRATED UNIT POWER SUPPLY CIRCUIT. Turn the ignition switch to OFF. Measure the voltage between the body integrated unit connector terminal and chassis ground. Connector & terminal (B280) No. 6 (+) - Chassis ground (-): (B281) No. 2 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Replace the body integrated unit < Refer to BODY INTEGRATED UNIT . > Register all ignition keys (transponders). Refer to the PC application help for Subaru Select Monitor.	Check the harness for open or short circuit between body integrated unit and fuse.
5 CHECK COMBINATION METER CIRCUIT. Remove the combination meter. < Refer to COMBINATION METER . > Measure the voltage between combination meter connector terminal and chassis ground. Connector & terminal (i10) No. 1 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 6 .	Check for an open or short circuit in the harness between the combination meter and fuse.
6 CHECK COMBINATION METER CIRCUIT. Measure the resistance between the body integrated unit connector terminal and combination meter connector terminal. Connector & terminal (i84) No. 10 - (i10) No. 39:	Is the resistance less than 10 Ω?	LED bulb is defective. Replace the combination meter case assembly. < Refer to DISASSEMBLY , Combination Meter. >	Repair the harness or connector.