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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
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England 
Test Glow Plugs, ECU and Relay - Identification of parts?

Working on my prolonged starting time.

Youtube has helped with how to test glow plugs although they appear to be a Censored to get to on the FFRR, but just to check:

Quote:
Once connector removed from glow plug, simply attach multimeter to end of glow plug and positive battery terminal. If voltage same as battery (pos to neg) then glow plug OK, if nothing then dead. I understand glow plugs are like light bulbs, they either work or they don't? Can some one please confirm this as OK for FFRR TD6 ?


I have been looking in my "E" box too, which is where the glow plug ECU and relay are. Need some help identifying all the parts and also on any methods to test the function of the ECU and/or the relay. Want to check these are working before moving onto the glow plugs which require a bit more dismantling:

1. Glow Plug ECU
2. Glow Plug relay or other ?
3. Glow Plug relay or other ?





Some more photos inside the E box


Click image to enlarge


Click image to enlarge


Click image to enlarge


IIDTool has always given me this fault, prior to the poor starting

Quote:
“3505 Unknown (Engine)”
Glow plug relay failure - glow relay defective. - detail from GAP


Price for new relay from Dan is £94, but this must be for the ECU (Number 1 in photo) ?

Thanks .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #238731 1st Feb 2014 1:17pm
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6407

England 

bump .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #238907 2nd Feb 2014 10:56am
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dingg1



Member Since: 29 Jun 2013
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2007 Range Rover Vogue SE 4.2 SC V8 Stornoway Grey

http://workshop-manuals.com/landrover/l322.../page_574/


that should help you

Post #238912 2nd Feb 2014 11:12am
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
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Yep

but confusion arises from this extract from RAVE (from changing e box fan section) ?




So is it a relay or an ECU? I will presume the former.

Now how to test if it is working OK ?

Probably nothing like the glow plug relay but this video is useful: #t=488 .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Last edited by Joe90 on 2nd Feb 2014 12:38pm. Edited 1 time in total

Post #238935 2nd Feb 2014 12:25pm
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dingg1



Member Since: 29 Jun 2013
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2007 Range Rover Vogue SE 4.2 SC V8 Stornoway Grey

I'd say relay - just sloppy terminology calling it an ECU

link with vid showing various ways to check relays,

www.squidoo.com/how-to-perform-an-automotive-relay-testing


no-one local able to swap a known good one to try on your car?

Post #238937 2nd Feb 2014 12:36pm
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6407

England 

Well, the connectors are nothing like the relays in the howtos, a big single post for the output power and 11 small pins for the connector, and I couldn't get it off the little plastic board it is fixed to, but with finger on the relay and ignition switched to position 2 I can feel it click, then there is a quiet electrical crackling sound.

There are lots of the same relay knocking about on eBay 2246919 72RB510 for @ £40. Good example with images:
http://www.ebay.co.uk/itm/BMW-E39-E46-3-5-...1344729221

Will have to check glow plugs next.... .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #238955 2nd Feb 2014 2:32pm
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dingg1



Member Since: 29 Jun 2013
Location: PORTUGAL
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2007 Range Rover Vogue SE 4.2 SC V8 Stornoway Grey

use multimeter to earth and top of glowplug should be about 0.9ohms resistance (iirc)

you don't need to pull them to check them

Post #238960 2nd Feb 2014 2:56pm
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wats39



Member Since: 08 Jul 2012
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Scotland 2004 Range Rover SE Td6 Alaska White

Joe, the glow plug relay/ecu can be tested simply by checking that it is putting 12v to the glow plugs when you first turn on the ignition. The big red wire is the feed from the battery to the relay and there are 6 individual wires going to each glow plug so you would have to check each 1 for 12v. To test the glow plugs, disconnect the positive wire on the end and check for continuity with your multimeter from the positive terminal of the glow plug to ground. If it shows an open circuit then its faulty. However, i think you are barking up the wrong tree regarding your starting probs as it happens when hot or cold. You would be better doing a leak off test on your injectors first. Its a very simple test you can do yourself with some hose and small clear bottles. Have a look on 'you tube'. Next to check would be the fuel pumps. '04 td6 se
'63 land rover s2 200tdi
'04 mk indy kitcar bike engine

Post #239467 3rd Feb 2014 11:40pm
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
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England 

Thanks for the advice wats39 & dingg1.

Ran the tank dry (more or less) and filled up with fresh fuel, no change so can rule that one out too (long shot)

Mpg seems to have dropped off by 1 or 2 on this tank full, but no smoke from rear, and still running fine.

Will have to have a go at glow plugs and leak test this weekend Thumbs Up

Some wiring images





 .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #239636 4th Feb 2014 5:28pm
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6407

England 

OK, carried out glow plug test today. Just to ensure i have the science right, removed connector from glow plug relay, then connected multimeter to +ve terminal of battery and inserted -ve lead from multitester into each of the connectors for each glow plug. A reading of 12v + indicates glow plug working OK.












If this is the case, I only have two working glow plugs!! (One gave a very small current flow but I count this as broken). No wonder it is struggling to start!

Off to have a word with Dan Wink .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #245429 28th Feb 2014 9:50am
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6407

England 

Glow plugs @ £16 each all in from Duckworths Thumbs Up .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #245449 28th Feb 2014 12:06pm
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6407

England 

Frosty this morning, 0 degrees, FFRR took nearly 15 seconds to fire up (chatata chatata ad infinitum!) so definitely glow plug related! .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #246185 4th Mar 2014 9:38am
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Joe90



Member Since: 29 Apr 2010
Location: Hampshire
Posts: 6407

England 

It was all going so well, inlet manifold out, correct deep socket applied, then bang, the nut on the glow plug parts company with the threaded end of the glow plug, on four of them!! Evil or Very Mad Evil or Very Mad Evil or Very Mad Really only applied medium pressure to undo, and gave some heat as well.

Guessing this is a head off job to have them drilled out?

Only saving grace is that one of the ones that wasn't working has started working, so at least I have three doing a job for now (Cylinders 1, 4 & 6) Big Cry


Hmm, found this but in situ would be tricky, and £120 + for the kit .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember Wink
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962

Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999

Post #247084 8th Mar 2014 1:49pm
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Full Fat Ray



Member Since: 23 Jan 2014
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Wales 2006 Range Rover Vogue 4.4 V8 Bonatti Grey

Hm, found this? but no link Question 2006 (56 Reg) 4.4 V8 Vogue In Bonatti Grey (Gorgeous!!)

Post #247090 8th Mar 2014 2:32pm
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mjdronfield



Member Since: 04 Nov 2011
Location: Derbyshire
Posts: 7788

United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

link works for me. Click on the word "this".

Thumbs Up 2011 Range Rover Vogue SE 4.4 TDV8

Previous cars :
2003 Range Rover Vogue TD6
1999 Discovery Td5 ES
1995 BMW M5 3.8 6 speed
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Post #247100 8th Mar 2014 3:24pm
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