Glow plug wiring CITROEN C-CROSSER 2009

OEM: 9661631680

Disassembled car photo

Engine running

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What is this part and why does it matter?

This wiring connects the ECU to each glow plug, carrying the current needed to preheat the combustion chamber on a diesel engine.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • Difficult cold starting, especially in winter
  • Check Engine light with a glow plug fault code
  • Excessive white smoke on cold start

Installation information

Routes from the glow plug relay/module to each cylinder’s glow plug — check for secure, correctly seated connectors after installation.

Frequently asked questions

Both a bad wiring connection and a failed glow plug can produce the same symptom (hard cold starting), so a mechanic will typically test the wiring’s continuity before condemning the plugs themselves.

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