General Information

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

Glow plugs provide a direct heat source to the combustion chamber. This allows for the intake air to get up to temperature allowing the engine to start at cold ambient temperatures. There is one glow plug per cylinder and they are electrically connected via a harness to the glow plug control module. For a detailed wiring schematic, see the engine wiring diagram. Refer to Wiring Diagram .
Each glow plug has one electrical connector pin at the top of the glow plug body and is grounded through the seat to the glow plug in the cylinder head. A glow plug that is not properly tightened into the cylinder head can cause open circuit fault codes to set.

When the glow plug control module commands the glow plugs to the pre-glow state, the WAIT to START lamp/engine warming lamp will be commanded by the ECM to turn ON. The WAIT to START lamp can stay ON up to 4 seconds.
NOTE: Allow the WAIT to START lamp/Engine Warming lamp to shut off before cranking the engine or a long crank to start could occur.
See the following procedure for a detailed component view. Refer to Overview .