Guest twinbridge01 Posted June 25, 2006 Can anyone help please??? I have just completed an mi16 conversion on my 1991 1.9 gti. I have used the 405 motronic ecu and wiring loom. Basically I have spliced the sesor loom into the 405 loom as per AndyRs guide. I have connected the 405s loom power spade connector into the black fuse box on the right hand side of the engine bay. I am pretty confident that everything is wired up as it should be but when I turn the ignition on nothing happens apart from the relay in the glove box fuse board clicks. The only thing I am not sure of is that I have been left with 2 wires under the steering colum ( 1 brown and 1 lilac) these where cut from the 205 loom and they went to the ecu/relay. I cant quite see where these lead without stripping the dash out. Should these be connected to the 405 loom?? Share this post Link to post Share on other sites
d-9 0 Posted June 25, 2006 Does one of the relays in the 406 loom click when you turn the ignition on? Share this post Link to post Share on other sites
Guest twinbridge01 Posted June 25, 2006 Does one of the relays in the 406 loom click when you turn the ignition on? Hi Yes. the red relay (I presume this is for the fuel pump) switches when the ignition is turned on. Share this post Link to post Share on other sites
d-9 0 Posted June 25, 2006 Nah the other relay is for the fuel pump, which only clicks when the engine is turning over, the relay that clicks when the ignition is turned on is the ignition relay for the ecu. does the starter engage? Share this post Link to post Share on other sites
Guest twinbridge01 Posted June 25, 2006 Nah the other relay is for the fuel pump, which only clicks when the engine is turning over, the relay that clicks when the ignition is turned on is the ignition relay for the ecu. does the starter engage? No the starter doesnt engage Share this post Link to post Share on other sites
d-9 0 Posted June 25, 2006 Ok, kinda hard to diagnose from here, but first of all, check the following: does your car have an imobiliser? is the battery positive terminal securly attached? Is the wire from the +ve terminal atached to the starter? is the wire on the starter solnoid? is the gearbox earth connected and clean? is the brown multiplug on top of the gearbox plugged in? Is the brown multiplug corroded to s*it? If its none of the above, try getting a bit of thickish wire, crimping a spade on the end, puting that end onto the starter solnoid and touching the other end onto the +ve side of the battery, if theres a bit spark and the engine turns over then you need to check the cars wiring, if there isnt then the +ve and -ve leads from the battery need careful checking. Do this with the ignition off and the car out of gear. Share this post Link to post Share on other sites
Guest twinbridge01 Posted June 26, 2006 Ok, kinda hard to diagnose from here, but first of all, check the following: does your car have an imobiliser? is the battery positive terminal securly attached? Is the wire from the +ve terminal atached to the starter? is the wire on the starter solnoid? is the gearbox earth connected and clean? is the brown multiplug on top of the gearbox plugged in? Is the brown multiplug corroded to s*it? If its none of the above, try getting a bit of thickish wire, crimping a spade on the end, puting that end onto the starter solnoid and touching the other end onto the +ve side of the battery, if theres a bit spark and the engine turns over then you need to check the cars wiring, if there isnt then the +ve and -ve leads from the battery need careful checking. Do this with the ignition off and the car out of gear. Thanks a lot for the help. The car did have an imobiliser but I removed it when doing the conversion. I will have a check at the weekend to see if I have overlooked anything on the imobiliser side. Thanks again. Share this post Link to post Share on other sites
