Removal and installation of high-frequency sound signal "H2" and low-frequency sound signal "H7"
Instructions: The high-frequency horn "H2" and the low-frequency horn "H7" are controlled in parallel by the on-board power supply control unit "J519". Removal and installation of both horn is similar, so the description is given only for one. The horn is installed on the left and right next to the side members.
Turn off the ignition and all electrical consumers. Remove the front bumper trim. Disconnect connector "1". Unscrew the mounting bolt "arrow" and remove the horn "2" together with the mounting plate.
Installation in reverse order.
Instructions: When installing, position the horn so that it does not touch adjacent parts.
Tighten the bolts of the mounting plate to the side members to a torque of 20 Nm.
Checking the high-frequency sound signal "H2" and the low-frequency sound signal "H7"
The acoustic signals (high-frequency acoustic signal "H2" and low-frequency acoustic signal -H7-) can be checked using the actuator diagnostics of the on-board power supply control unit "J519".
Sound signal buttons "H"
The horn is activated by pressing the spring-loaded trim in the middle of the steering wheel. Depending on the vehicle's equipment, the horn buttons may either be part of the steering wheel or integrated into the driver's airbag module and cannot be replaced separately. If the buttons are faulty, the airbag module or steering wheel must be replaced. Remove the steering wheel. Remove the driver's airbag module.
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