Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSSUBARU2004OUTBACK LIMITED, 4D SEDAN, EJ259REPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALHORNSHORN SYSTEMHORN SWITCHINSPECTION

2004 Subaru Outback Limited, 4D Sedan, EJ259

Horn Switch: Inspection

2004 Subaru Outback Limited, 4D Sedan, EJ259SECTION Inspection

Treasure horn switch resistance.

Fig 1: Identifying Treasure Horn Switch Resistance

Courtesy of SUBARU OF AMERICA, INC.

RESISTANCE SPECIFICATION CHART

Switch position	Terminal No.	Standard
When horn switch is pushed.	1 and Body ground	Less than 1 ohm
When horn switch is not pushed.	1 and Body ground	More than 1 Mohm

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.