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Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1853 (Instrument Cluster System And Panel Illumination) >> Diagnostic Tests >> Instrument Cluster and Panel Illumination >> Pinpoint Tests >> Pinpoint Test D: A Single Illumination Source Is Inoperative >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

For dimmable backlighting, a variable pulse width modulated (PWM) voltage is supplied to the illumination source(s) through circuit 19 (LB/RD).

For non-dimmable backlighting, with the ignition switch in the START or RUN position, voltage is supplied to the illumination sources from the accessory delay relay through circuit 54 (LG/YE).

Ground is supplied to the illumination source(s) through circuit 57 (BK).

Possible Causes