Glow Plug System - INGENIUM I4 2.0L Diesel (G1809317): Overview

WARNING: This page is about a different car, the 2019 Jaguar XE. However, it is still accessible from the selected car via links, so may be relevant.

A glow plug is installed in the inlet side of each cylinder to heat the combustion chambers before and during cranking. This helps cold starting and reduces emissions and engine noise when idling from a cold engine.

A glow plug control module powers each glow plug individually. The glow plug control module incorporates diagnostic functions for the individual glow plugs and reports the diagnostic status by means of an output signal to the Engine Control Module (ECM). An input signal from the ECM determines the power level applied to the glow plugs by the glow plug control module.

Each glow plug is grounded through its fixing in the cylinder head. The ECM controls the operation of the glow plug relay which is located in the glow plug control unit. The glow plug relay controls the illumination of the glow plug indicator in the Instrument Cluster (IC).