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Home >> Lincoln >> 2009 >> Navigator RWD >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Cluster Illumination & Instrument Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test E: The Steering Wheel Control Illumination Is Inoperative >> Normal Operation

Normal Operation

The Smart Junction Box (SJB) sends a pulse-width modulated voltage to the steering wheel controls through circuit VLN04 (VT/GY) (Navigator) or circuit VLN18 (BU/WH) (Expedition) to the clockspring. The voltage passes through the clockspring to the steering wheel harness and on to the steering wheel controls. Ground is provided through the clockspring and circuit GD133 (BK).

This pinpoint test is intended to diagnose the following: 

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