Subaru Legacy BN/BS (2015-2019) Service Manual: Inspection

Subaru Legacy BN/BS (2015-2019) Service Manual / Communication system / Horn switch / Inspection

1. CHECK HORN SWITCH

CAUTION:

Refer to “CAUTION” of “General Description” before handling the airbag system components. General Description > CAUTION

1. Disconnect the ground terminal from the battery sensor, and wait for at least 60 seconds before starting work. NOTE

2. Remove the driver’s airbag module. Driver’s Airbag Module > REMOVAL

3. Check that the connection of the horn switch harness connector is correct.

4. Measure the resistance between connectors.

Preparation tool:

Circuit tester

(a)

Ground terminal

(b)

Horn switch terminal

Terminal No.	Standard
Horn switch terminal — ground terminal	Less than 1 -

5. Replace the driver’s airbag module if the inspection result is not within the standard value.

2. CHECK ROLL CONNECTOR

CAUTION:

If the steering wheel and steering angle sensor (steering roll connector) are removed, perform “VDC sensor midpoint setting mode” of the VDC. VDC Control Module and Hydraulic Control Unit (VDCCM&H/U) > ADJUSTMENT

1. Remove the roll connector. Roll Connector > REMOVAL

2. Measure the resistance between connector terminals.

Preparation tool:

Circuit tester

Terminal No.	Inspection conditions	Standard
A1 — C9	Always	Less than 1 -

3. Replace the roll connector if the inspection result is not within the standard value.

Note

• Horn switch is a unit with the driver’s airbag module.• Refer to “Airbag System” for removal and installation procedures of the driver’s airbag module. Driver&rs ...

Horn system

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Other materials:

Removal
1. BACK-UP LIGHT AND NEUTRAL POSITION SWITCH1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the clip (A) from the air intake boot.3. Loosen the clamp (B) connecting the air intake boot and air cleaner case (rear).4. Loosen the clamp (C) which connects the air intake boot and th ...