alanius Posted May 10, 2017 Share Posted May 10, 2017 I'm currently fitting a V8 engine + autobox in to a 2004 Defender Td5. The original defender has ABS-ETC and I want to re use this. The only wire I dont know what to do with is the grey-purple. Cant't find any info about this wire, to what to connect this wire or.... I can activate the abs module via the nanocom and all works fine, ABS pulp works and each wheel give readings. When I start (or just the ignition on) the V8 all lights go out just the ABS stays on. As soon as I select gear all lights (abs - etc - handbrake) go on. Dont know how this is possible as the autobox has no elektronics. Who can help - urgent! Many thanks Regards Alain Quote Link to comment Share on other sites More sharing options...
Dave W Posted May 10, 2017 Share Posted May 10, 2017 The TD5 ECU sends out an RPM square wave signal to the ECU at 5 volts, maybe you are missing that ? Although it's a 5 cylinder engine the ECU actually sends out a spoofed 4 cylinder RPM with 2 pulses per revolution. Without that RPM signal I doubt the ABS and TC can operate. Quote Link to comment Share on other sites More sharing options...
western Posted May 10, 2017 Share Posted May 10, 2017 grey [slate] with purple trace goes from ABS ECU to ABS Modulator on abs ecu pin C0506-10 to abs modulator pin C00501-5 & abs ecu pin C0504-10 to engine ecu pin C0658-32 taken from pages 40 & 41 of http://www.legionlandrover.com/manuales/electrical schemes - defender 2002 uk.pdf as DaveW says without the corresponding engine ecu signal it won't work. Quote Link to comment Share on other sites More sharing options...
alanius Posted May 10, 2017 Author Share Posted May 10, 2017 Thabks for the info allready! i found on the black box dizgnostics website some details and there is mentionned for pin 10 (middle connector abs ecu) 'throttle position sensor'. i dont have a rpm signal from the engine connected to the abs ecu. But even when the engine is not running, just live igntion and i switch gears all the lights will come on. Just noticed i have the following fault: 04-01 pump relay open circuit 004 times same problem or will this be somehing different? Quote Link to comment Share on other sites More sharing options...
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