Horn System: General Description: Caution

Before disconnecting connectors of sensors or units, be sure to disconnect the ground cable from battery.
When replacing the audio and MFD parts provided with memory functions, record the memory contents before disconnecting the battery ground cable.
Be careful of the following items. Failing to do so may cause the airbag system malfunction.
- Yellow connectors and harnesses with yellow tapes around them are the connectors and harnesses for the airbag system. When using a tester on these circuits, follow the cautions of "AIRBAG SYSTEM". < Ref. to CAUTION , General Description. >
- Be careful not to damage the airbag system wiring harness when servicing the electrical parts around the steering column.
When removing, installing or replacing the VDCCM&H/U, VDCCM&H/U bracket, steering wheel or steering angle sensor (steering roll connector), perform "VDC sensor midpoint setting mode" of the VDC. < Ref. to ADJUSTMENT , VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). >