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Home >> Lincoln >> 2006 >> Zephyr >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster And Panel Illumination >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test B: 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 circuit VLN04 (VT/GY) to the clockspring. The PWM signal passes through the clockspring to circuit VLN04 (VT/GY) to the LH and RH control switches. Ground to the clockspring is supplied through circuit GD116 (BK/VT). Ground from the clockspring to the LH and RH steering wheel switch is supplied through circuit GD165 (BK).

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