2.0L Diesel
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.
 Courtesy of CHRYSLER GROUP, LLC
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The Fuel Quantity Solenoid (FQS) (1) is mounted to the back of the High Pressure Fuel Injection Pump (HPFIP) (3). The FQS controls the quantity of fuel entering the HPFIP internal pumping chambers.