MembersPage/RichardBarrington/CapriWiring (2006-03-16 04:43:08)

Plug'n'play was a nice idea, but connectors are harder to find. A new ECU and a new loom to suit is easier. Land Rover made life good for us and used injector connectors on most everything, so hook up is easy - just needed to fit the MAT sensor to the plenum.


Trigger signal - channel A, 1V per segment:

scope1-thumbnail.jpg scope2-thumbnail.jpg


Pin mapping:

FunctionVEMS ECU pinWire ColourComments
Power
VbattEC36-25Red 
GroundEC36-26BlackDirect to battery for lowest noise
Power GroundEC36-21 EC36-32 EC36-5BlackGood connections!
Inputs
TriggerEC36-27WhiteShielded, see notes below
TPSEC36-1Green 
TPS VrefEC36-28Red 
TPS GndEC36-5Yellow 
Coolant temperatureEC36-14Blue 
Manifold air tempEC36-2Grey 
Outputs
Fuel pump relay -veEC36-15OrangeP259_5
Cooling fan relay -veEC36-5GreenP259_0
Injector 1EC36-7Black 
Injector 2EC36-19Black 
Injector 3EC36-8Black 
Injector 4EC36-20Black 
Injector 5EC36-9Black 
Injector 6EC36-18Black 
Injector 7EC36-6Black 
Injector 8EC36-17Black 
Idle stepper AEC18-4  
Idle stepper BEC18-10  
Idle stepper CEC18-5  
Idle stepper DEC18-11  
WBO2
NernstEC36-13BlackOops, should have been shielded
Pump +EC18-9Red 
Pump -EC18-7Yellow 
Heater + Greyto fuse block
Heater -EC18-18white 
Comms
RS232 rxEC18-? Shielded
RS232 txEC18-? Shielded
RS232 gndEC18-? Shielded

The new loom is constructed from Automotive-spec Cross-linked Polyethelene wire (-40 to 125 degrees centigrade) and Military-spec Tefzel wire (-65 to 150 degrees centigrade). Fuses and relays are automotive, for easy replacement if and when required.

Trigger notes

Check that R30 is removed, and that JP7 is jumpered. Existing 10K R55 should be OK, but could reduce to 1K if necessary. C30 could go up to 100nF if coil signal is too noisy (it shouldn't be though).


Back to MembersPage/RichardBarrington/TonysCapri

Back to MembersPage/RichardBarrington