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Home >> Lincoln >> 2012 >> MKT Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster Illumination And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test D: The Steering Wheel Switch Illumination Is Inoperative >> Normal Operation

Normal Operation

The Smart Junction Box (SJB) provides voltage to the steering wheel switches based on input from the instrument panel dimmer switch. The voltage passes through the clockspring to the steering wheel harness and then to the steering wheel switches.

This pinpoint test is intended to diagnose the following: 

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