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Home >> Jeep >> 2017 >> Wrangler Sahara, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Body Control Module (BCM) - DTCS B106A-12 To B1A90-51) >> DTC Troubleshooting >> B1666-18-Left Reverse Lamp Control - Under Current >> Theory Of Operation

Theory Of Operation

WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

The BCM provides a Pulse Width Modulated (PWM) voltage output through the backup lamp driver circuit. The driver circuit connects to the Backup Lamp. A ground path for the lamps is present through the harness to the body sheet metal. For additional information on the Backup Lamps operation. Refer to OPERATION .

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