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BigBlue94

New Member
The glow plugs on my 300tdi have no power getting to them. The relay is ok and all associated fuses are intact. What I am I missing here? Electrics are not my strong point.
 
The feed for the glow plug relay is fed from the yellow starter relay by the red/white wire
Does the glowplug light come on the dash??

Daz
 
So timer is working too then I'd guess, you tried all to make sure its just not one thats working ?

Could also be a poor earth
 
If the dash light is coming on / going off it sounds like the timer is working ok
You could test from the 1st glow plug wire to earth with a volt meter or 5w lamp - have you done that??

Daz
 
Wonder if theres a short in the wire, if power if getting to the relay and the relay is working then the only thing left would be a bad connection to the plug itself
 
Yep you could check the output pin from the relay - if there is no voltage present with the glow plug light on - its the relay or relay feed wire ;)

Daz
 
Starting to look like the feed wire as I put new relay in but nothing changed. I will check the output pin on the relay.
 
Looking at the wiring diagram :
white/red = relay activation wire
brown = feed from battery to glow plugs via relay
white = switched live
yellow/black = glow plug dash light
black = relay earth

yellow/black = glow plug feed wire

Daz
 
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