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Home >> Dodge and Ram >> 2024 >> ProMaster 2500 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Body Control Module (BCM) - DTCS B1107-18 To B145E-01) >> DTC Troubleshooting >> B110F-15 Fog Front Light Left - Circuit Short To Battery Or Open >> Theory Of Operation - Fog Lamps

Theory Of Operation - Fog Lamps

WARNING: This page is about a different car, the 2024 RAM ProMaster EV. However, it is still accessible from the selected car via links, so may be relevant.

The Fog Lamp Switch is integral to the Headlamp switch. When the Body Control Module (BCM) receives an input signal from the Headlamp Switch, requesting Fog Lamp illumination, the BCM provides a Pulse Width Modulated (PWM) voltage output through the Left and Right Front Fog Lamp Control Circuits to the Left and Right Front Fog Lamps. A ground path for the Left and Right Front Fog Lamps is provided through the wiring harness to the body sheet metal.

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