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displaying posts 1 to 9 of 9
| Author | Subject: Lambda wiring |
 prism7guy
Seasoned Pro  Location: DoncastAAAAARGH Registered: 13 Jan 2008 Posts: 4,639 Status: Offline |
Post #1
I'm installing a DTA E48 on my car, according to the wiring diagram for the ecu the black and grey wires are used for the ecu. I was just wondering whether i should do anything with the two white wires as from an internet search it appears that they are used for heating it up.  ________________________________________ Goldie the track car. |
 Posted 22nd Jul 2015 at 21:23
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craig903
Regular  Location: whitstable Registered: 08 Jul 2013 Posts: 273 Status: Offline |
Post #2
Yep thats correct, two are for pre heating. The ve+ for the heater comes from the 20pin connector on the chassis just connect it back up. I think it is pin 6 on the big chassis connector. Obviously just wire that to the heater live and then ve- to the chassis. The power for the lambda heater ultimatly comes from the fuel pump relay so this switches it on/off.________________________________________ 208 GTI OwnerTurbo'd '6 project - work in progress |
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Posted 23rd Jul 2015 at 18:43
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prism7guy
Seasoned Pro Location: DoncastAAAAARGH Registered: 13 Jan 2008 Posts: 4,639 Status: Offline |
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Posted 23rd Jul 2015 at 21:15
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craig903
Regular Location: whitstable Registered: 08 Jul 2013 Posts: 273 Status: Offline |
Post #4
No worries, there is a fuse for the lambda heater in the engine bay fuse box. I can't remember the fuse number but use that to double check what pin it is in the 20 pin plug________________________________________ 208 GTI OwnerTurbo'd '6 project - work in progress |
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Posted 23rd Jul 2015 at 22:00
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prism7guy
Seasoned Pro Location: DoncastAAAAARGH Registered: 13 Jan 2008 Posts: 4,639 Status: Offline |
Post #5
Any idea on the current draw for the heater?I'm making completely new looms and don't want to under-spec the wiring or fuse etc, i'll power it from one of the fuel pump relays. ________________________________________ Goldie the track car. |
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Posted 24th Jul 2015 at 21:45
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welshpug!
Capt Pedantic  Location: Bigend, Wales. Registered: 27 Mar 2007 Posts: 25,817 Status: Offline |
Post #6
9 or 11 w iirc.________________________________________ need a part number? get on here - http://public.servicebox.peugeot.comBring on the Trumpets. |
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Posted 24th Jul 2015 at 21:57
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prism7guy
Seasoned Pro Location: DoncastAAAAARGH Registered: 13 Jan 2008 Posts: 4,639 Status: Offline |
Post #7
Ahh, much less than i thought, i was assuming 20A for some reason.Thanks Mei. One other question, the large ring terminal that lives on the large live starter post then goes into the wiring loom, does that just supply a live for the fuel pump relay which then powers other stuff? I had a look at some wiring diagrams but couldnt see that mentioned, im pretty sure i traced it back to one of the pins on the relay connector. ________________________________________ Goldie the track car. |
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Posted 24th Jul 2015 at 22:19
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craig903
Regular Location: whitstable Registered: 08 Jul 2013 Posts: 273 Status: Offline |
Post #8
The fuel pump relay only powers the fuel pump and labda sensor heater. The switched live on the relay goes into the inertia switch and then into the engine bay fuse box via the 20pin chassis plug. It splits into two fuses (fuel pump and lambda heater fuse). after the fuses it goes to the fuel pump and to the lambda heater via the 20 pin plug again. I believe i read up that lambda heaters have a 1 amp draw.All the body electrics etc are powered by a live wire going into the engine fuse box. it bolts in the end off the fuse holder a cover pulls up and there is a 10mm nut holding it on. This is how the ignition is powered up. Then when you turn your ignition on then their is a 12v switch wire which goes fuel pump/ecu relay. Ultimately the ecu controls the fuel pump relay. ________________________________________ 208 GTI OwnerTurbo'd '6 project - work in progress |
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Posted 24th Jul 2015 at 22:50
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cully
Seasoned Pro  Location: Cullompton Registered: 12 Jun 2013 Posts: 1,093 Status: Offline |
Post #9
white wire runs to the inersia switch to the double relay it will power fuel pump/lambda/ECU/injectors/coilpacks + more |
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Posted 25th Jul 2015 at 07:40
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