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Home >> Chrysler >> 2011 >> 300 C, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1168 (3.0L Diesel - DTCS P0683-00 To P20C0-00 - 1500) >> DTC Troubleshooting >> P0691-00-Cooling Fan 1 Control Circuit Low >> Set Condition

Set Condition

WARNING: This page is about a different car, the 2016 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

The Powertrain Control Module (PCM) sends a Pulse-Width Modulated (PWM) signal to the Cooling Fan Module to operate the Engine Cooling Fan. The PCM detects that the Cooling Fan Control circuit is below a calibrated voltage for a calibrated threshold of time.

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