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Home >> Ford >> 2007 >> Freestar SEL >> Repair and Diagnosis (Single Page) >> Electrical >> Gauges >> Instrument Cluster System And Panel Illumination >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> 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 provided to the steering wheel control switch(es) through circuit 1205 (BK).

Possible Causes

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