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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 F: The Control Illumination Is Inoperative/Always On >> Normal Operation

Normal Operation

When the headlamp switch is turned to the ON position, the SJB monitors outputs to the instrument panel dimmer switch through circuits 2085 (VT/YE), 1405 (LB/BK) and 1403 (BK/WH). The instrument panel dimmer switch internal circuitry is grounded through the SJB by circuit 1410 (TN/OG).