1.4 pre-heating fuse

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Tips for a Diesel powered Citroen C3

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Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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The 1.4 and 1.6 diesel engines are fitted with pre-heaters. These engine pre-heaters also operate in the post-heating mode and were often called 'glow-plugs'. The pre heaters got the name glow-plug because the heated end would glow when they were powered with 12v.

There is one pre-heater per cylinder operated in parallel by a pre-heat relay.

The 1.4 preheating relay is located behind the front bumper, as shown in the photo.

Citroen C3 pre heating relay location
Citroen C3 pre heating relay location


The pre-heat relay power supply is connected directly to the battery live line to the BSM/Maxifuses.

The Citroen C3 pre heaters are not fused, there is a direct supply from the relay.

You will not find a fuse for the pre-heaters or a fuse for the pre heater relay. This could well be one of the reasons that pre-heater relay will fail with a bad pre-heater.


Citroen C3 1.4 pre heat diagram
Citroen C3 1.4 pre heat diagram
The Citroen C3 1.4 16v pre-heater diagram shows the 4 pre-heaters, the relay that controls them (as shown the picture above), the battery and the engine ECU component.
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