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Home >> Ford >> 2000 >> Contour SE, 2.0 3, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1212 (Instrument Cluster And Panel Illumination) >> Diagnosis And Testing >> Instrument Cluster and Panel Illumination >> Pinpoint Test E: The Steering Wheel Control Switch Illumination Source Is Inoperative >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.

When the headlamp switch is placed in the PARK position or the headlamp ON position, voltage is supplied to the instrument panel dimmer switch through circuit 14 (BN). The instrument panel dimmer switch then sends a variable voltage to the backlighting control system through circuit 235 (RD/BK). The ground signal is a common steering wheel switch ground, which is used in conjunction with the horn and the vehicle speed control. The ground is supplied to the steering wheel control switch from the powertrain control module (PCM) through circuit 848 (DG/OG).

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