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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis >> Electrical >> Gauges >> Instrument Cluster Illumination And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test D: The Steering Wheel Control Illumination Is Inoperative >> Normal Operation

Normal Operation

The Smart Junction Box (SJB) sends a Pulse Width Modulated (PWM) voltage to the steering wheel controls through the clockspring. The voltage passes through the clockspring to the steering wheel control switches.

This pinpoint test is intended to diagnose the following: 

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