No power to glow plugs 300tdi
- Thread starter BigBlue94
- Start date
This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
DEFENDER90-DAZ
New Member
- Posts
- 3,239
- Location
- Scotland - Houston
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
Does the glowplug light come on the dash??
Daz
Dr_evil
Banned
- Posts
- 29,535
- Location
- Perched on the naughty step
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
Could also be a poor earth
DEFENDER90-DAZ
New Member
- Posts
- 3,239
- Location
- Scotland - Houston
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
You could test from the 1st glow plug wire to earth with a volt meter or 5w lamp - have you done that??
Daz
Dr_evil
Banned
- Posts
- 29,535
- Location
- Perched on the naughty step
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
DEFENDER90-DAZ
New Member
- Posts
- 3,239
- Location
- Scotland - Houston
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
Daz
DEFENDER90-DAZ
New Member
- Posts
- 3,239
- Location
- Scotland - Houston
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
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
DEFENDER90-DAZ
New Member
- Posts
- 3,239
- Location
- Scotland - Houston
Get some one to switch on the ignition while you lightly touch the relay - if its working you should feel it operate
Daz
Daz
DEFENDER90-DAZ
New Member
- Posts
- 3,239
- Location
- Scotland - Houston
Ok let us know what you find
Daz
Daz
