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Home >> Jaguar >> 2019 >> XF S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 21 (Electronic Engine Controls - INGENIUM I4 2.0L Petrol -- XF/(X260)) >> Electronic Engine Controls - INGENIUM I4 2.0L Petrol (G2006487) >> Description And Operation >> Electronic Engine Controls >> Description >> Active Engine Mount Solenoid

Active Engine Mount Solenoid

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G11308571Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The Powertrain Control Module (PCM) controls the vacuum operated engine mounts via an active engine mount solenoid.

The active engine mount solenoid softens both side engine mounts by applying a vacuum.

When the engine is idling, the PCM completes the ground circuit to the active engine mount solenoid. The active engine mount solenoid softens both side engine mounts by applying a vacuum. This makes the engine mount more compliant and allows it to absorb more vibration and shake. At higher engine speeds, the PCM reduces the frequency of the pulse signal to the active engine mount solenoid. The engine mounts are switched off when the engine speed decreases a predetermined threshold. The threshold is engine speed dependent, the active engine mounts are switched off when the engine speed increases to 1, 250 Revolutions Per Minute (RPM).

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