Citroen xsara saloon no power to glow plugs hdi 90

[Jeff_1972]

Hi everyone
I’ve got a Citroen xsara saloon hdi 90 it’s becoming difficult to start in the mornings, I’ve tested the glow plug circuit and there is no power on switching in the ignition.
Any ideas on where to look first any help would be appreciated
Thanks
Jeff

[petarc1971]

Inspect the heater module located near the battery, it may melt the contact and drop the wire.

[jimbobc]

Try testing the Glow plug circuit when the engine is cold it should stay on for a while after the light on the dash goes out, there is a thermal cut out switch that cuts power to the relay and plugs when engine is hot.
Could be a faulty relay......
On cold mornings I usually turn on ignition for 5 secs then off again, repeat two more times and she usually fires up.