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Home >> Pontiac >> 2004 >> Aztek Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 110 (Lighting Systems) >> Diagnostic Information and Procedures >> DTC B2625: Display Dimming Pulse Width Modulation (PWM) Output Circuit >> Circuit Description
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Circuit Description

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The body control module (BCM) receives a variable voltage signal from the instrument panel (I/P) dimmer switch requesting to illuminate the instrument panel illumination lamps to a desired intensity. When this occurs, the BCM directly sends a pulse width modulated (PWM) voltage based on the I/P dimmer switch position through the instrument panel lamps dimming control circuit to the instrument panel illumination lamps.

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