Check Horn

SYMPTOM CHART

Step	Check	Yes	No
1 CHECK HORN OPERATION. Check if the horn sounds when pressing the horn switch.	Does horn sound?	Go to step 2 .	Check the horn circuit.
2 CHECK OUTPUT TO HORN RELAY. Connect the Subaru Select Monitor kit. Turn the ignition switch to ON (engine OFF) and run the "PC application for Subaru Select Monitor". On « System Selection Menu» display, select {Integ. unit mode}. Select the {Function check}. Select the {Hazard Output} and execute it.	Does horn sound?	The horn circuit is OK.	Go to step 3 .
3 CHECK HORN RELAY CIRCUIT. Disconnect the connector of body integrated unit. Remove the horn relay. Measure the resistance between body integrated unit connector and horn relay. Connector & terminal (B280) No. 24 - Horn relay No. 4:	Is the resistance less than 10 Ω?	Check body integrated unit. Ref. to BASIC DIAGNOSTIC PROCEDURE .	Repair or replace the harness.