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Home >> Mercury >> 2006 >> Monterey >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster System And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Test >> Pinpoint Test D: The Steering Wheel Control Switch Illumination Source Is Inoperative >> Normal Operation

Normal Operation

When the headlamp switch is turned to the ON position, the smart junction box (SJB) monitors input from the instrument panel dimmer switch. The SJB then sends a variable voltage to the steering wheel control switch(es) through circuit 1417 (LG/RD). The ground is supplied to the steering wheel control switch(es) through circuit 1205 (BK).

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