Warren G
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Registered: 14th May 06
Location: Kent
User status: Offline
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No eml light on, no spark
anyone else had to promblem when converting ecu's?
any ideas untill i get some wiring diagrams sorted?
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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Exactly what are you using then?
Just a bare x16xe engine?
C16xe loom/ecu/sensors(afm etc)
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Warren G
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Registered: 14th May 06
Location: Kent
User status: Offline
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c16xe ecu, loom, afm etc etc
all plugged in fine, as colours matchted only thing that possibly different is its got a x16xe crank sensor 
on a x16xe bottom end, c26xe head with dbilas throttle bodies
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
User status: Offline
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Crank sensors the same as far as i know.
Check the black plug in the footwell.
Make sure your getting a perm live, and an ignition live.
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Olsrey
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Registered: 13th Jan 07
Location: Bradford Drives: LET Vectra B
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Just checked EPC and the crank sensor is the same for x14xe,x16xe and x16xe 
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Stu_22
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Registered: 25th Mar 02
Location: Luton
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if you have the X16 bottom end you need a X16 ECU also the C16 ecu will be looking for the AFM
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Warren G
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Registered: 14th May 06
Location: Kent
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quote:
Originally posted by Stu_22
if you have the X16 bottom end you need a X16 ECU also the C16 ecu will be looking for the AFM
nothing to do with it, and i do have a afm
quote:
Originally posted by Vaux Lad
Crank sensors the same as far as i know.
Check the black plug in the footwell.
Make sure your getting a perm live, and an ignition live.
have
thick red wire - live
thick red/blue wire - switched live
got to get a test light monday to check everything, will also plug tech 1 in to see it if even reconises a ECU is there
its gonig to be either wiring or ecu fault, just got to check all the feeds now
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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The red/blue is fuel pump wire, which the ecu switches to live.
Black should be ignition switched live.
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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quote:
Originally posted by Vaux Lad
The red/blue is fuel pump wire, which the ecu switches to live.
Black should be ignition switched live.
Exactly right
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Warren G
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Registered: 14th May 06
Location: Kent
User status: Offline
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quote:
Originally posted by luke85
quote:
Originally posted by Vaux Lad
The red/blue is fuel pump wire, which the ecu switches to live.
Black should be ignition switched live.
Exactly right
nope
red - perment live
black - switched live
red/blue is earth!
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lee mitchell
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Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
User status: Offline
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quote:
Originally posted by warren.g
quote:
Originally posted by luke85
quote:
Originally posted by Vaux Lad
The red/blue is fuel pump wire, which the ecu switches to live.
Black should be ignition switched live.
Exactly right
nope
red - perment live
black - switched live
red/blue is earth!
red/blue earth? i hope u are joking? 
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
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red/blue is fuel pump
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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Thats the LET loom but the colours are the same
[Edited on 07-01-2008 by luke85]
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Warren G
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Registered: 14th May 06
Location: Kent
User status: Offline
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yes im 99% sure it was
4 wires on fuel pump relay
thick 4mm red was perment live
thin black was ignition feed
thin red/brown - cant remember
thick 4mm red/blue was earth
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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But if your fitting the C16XE and loon to the corsa then the plugs should be the same anyway and even if they have been cut off you just match colour for colour. The reason youve got no spark is your ECU isnt powered up because the EM light doesnt come on (assuming youve wired it up)
but the thick red/blue is the fuel pump, earths are brown
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Warren G
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Registered: 14th May 06
Location: Kent
User status: Offline
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thats correct, its the main earth for the fuel pump
and iv fixed it, found a broken ignition feed wire  its running now
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Adam-D
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Registered: 11th May 02
Location: Cheshire
User status: Offline
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knock sensor is different?
later is 2 wire, and early is 1 wire...
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
User status: Offline
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Red/Blue is NOT an earth 
The fuel pump earth comes from the pump to the chassis.
Red/Blue is the switched 12v from the relay to the pump.
The thin red/brown is the switched earth, that the ecu switches to then switch the relay. Which supplys 12v to the blue/red wire.
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luke85
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Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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Measure the voltage with the engine running on the red/blue wire......
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Warren G
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Registered: 14th May 06
Location: Kent
User status: Offline
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the red/blue wire runs to all the injectors, fuel tank vent switch and the secondary air pump if you look on TIS wiring diagrams, its an earth
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luke85
Member
Registered: 26th Nov 07
Location: Chesterfield
User status: Offline
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The injectors dont have a permanent earth either!
They have a live on one side and the ECU grounds the other pin of the injector it wants to fire
[Edited on 08-01-2008 by luke85]
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Warren G
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Registered: 14th May 06
Location: Kent
User status: Offline
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seems your right, must of written it down wrong, twat!
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Vaux Lad
Member
Registered: 15th Dec 04
Location: Stoke-on-Trent
User status: Offline
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Aye, as said. The red/bue goes to the injectors yeah, as it provides the 12v to them.
The ecu then grounds them to fire them.
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