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. Remove the transmission assembly from the vehicle. Automatic Transmission Assembly > REMOVAL2. Remove the air breather hose. Air Breather Hose > REMOVAL3. Remove the oil pan and control valve body. Control Valve Body > REMOVAL4. Remove the transmission harness. Transmission Harness > REMOVAL5 ...