jims13 6 Posted December 8, 2008 Report Share Posted December 8, 2008 right does anyone have a diagram of what wires do what at the vw end of the sensor...i need to know so i can splice my new lambda in..as i have no plug attached.cheers jim Link to post Share on other sites
cabrioman 6 Posted December 8, 2008 Report Share Posted December 8, 2008 brown with red trace is earthred with white trace comes from "heated oxygen sensor relay" black wire is from ECU pin 20yellow goes to ECU pin 42 ....hope this helps jim Link to post Share on other sites
cabrioman 6 Posted December 8, 2008 Report Share Posted December 8, 2008 urs is OBD2 aint it .... have u got two oxygen sensors ??? Link to post Share on other sites
UnitedMotorsport 55 Posted December 8, 2008 Report Share Posted December 8, 2008 UK OBD2 with only Pre Cat. 02 probe.:Loom plug:Pin 1 - Red/White - Power from fuel pump relay.Pin 2 - Brown - Pin 12 on ECU.Pin 3 - Yellow - Pin 42 on ECU.Pin 4 - White - Pin 20 on ECU.Sensor plug:Pin 1 - White - heater.Pin 2 - White - Heater control.Pin 3 - Grey - Signal reference.Pin 4 - Black - Lambda signal. Link to post Share on other sites
jims13 6 Posted December 9, 2008 Author Report Share Posted December 9, 2008 nice one cheers..ill wire it in tonight mk2paul 1 Link to post Share on other sites
jims13 6 Posted December 18, 2008 Author Report Share Posted December 18, 2008 wired it in , but i dunno , im still not sure..used my multimeter to double check the pre heats.. i think ill chuck the laptop on and see what vagcom says.. it might be a duff sensor, which aint a problem a i have the other one running the air/fuel gauge.. Link to post Share on other sites
jims13 6 Posted December 22, 2008 Author Report Share Posted December 22, 2008 just rewired it all , and fitted another fpr so , well see if it cures it.. seems to idle alot better though.. but a road test will tell Link to post Share on other sites
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