amgstyle

hey guys i just bought o2 simulators for my cel. i have to tap into the wires of the rear o2 senors with the simulators but don't have a diagram of what the wires are coming from the ecu. if anybody know's please can you post it up asap. thanks also i have slk 32 will the diagram be the same a c 32??

MBtech1098

What wires are you wanting to tap into?

amgstyle

i need to tap into the two rear o2 sensor wires. it's a 4 wire sensor so i believe it has 2 heater, 1 signal, and 1 ground wire. i need to tap into both the signal and ground wire on both sides of the rear 02 senors. thanks

amgstyle

also do you know what the difference is when they say upstream or downstream for the o2 sensors?

MBtech1098

Your car has a total of 4 O2 sensors 2 on each bank, the ones before the cat are upstream, the ones after are downstream. In my previous post I should have been more specific...where do you want to tap in, by the ME-SFI or the O2S?

amgstyle

thanks for the help. i need to tap into senors closest to the muffler so that would be the downstream sensors rite ?? the instructions for the simulators said not to tap near the sesnor as it's near the exhaust pipe and outside the car. they reccomend installing it under the hood or passenger cabin. sorry but was is the ME-SFI??

thanks again for the help

MBtech1098

ME, is the engine control unit...which is located which is locate under the hood on the driver side in the module box. You want connector 4 pin 5 (blue/brown)for the signal out for both sensors, and connector 4 pins 15(blue) for the R/S, and connector 4 pin 16(yellow) for the L/S.

amgstyle

sorry for all the questions. but do you have a print out of what the connectors and the pinouts. i don't know excatly where they are how the pins are listed. so the signal out for both the sensors is one wire and not sperated between r/s and l/s?? also pin 15 and 16 are they ground wire??

thanks

MBtech1098

There are not really any good pics, but everything is numered on the connectors, also when you pull the connector out of the ME, if you look in the socket it will tell you the connector numbers...pretty straight forward.

ali saklaoui

you can do it without simulator,just need star diagnos.i already did it .

superstar

Could you please explain in more details how did you mange to turn it off? I have Kleemann headers and cat less sys, I am getting code (Po432) " The efficiency of the left catalytic converter is insufficient "

ali saklaoui

no problem,i have a workshop in lebanon and have a star diagnos,but i am now in germany.you have to use the developement data,and than you can do it.the developement data is available in all star diagnos with XENTRY version but it is only in german.when i will be back,i will send you the procedure step by step.it is very easy.

loungn14

you beat me to it ALI!

Yup, he is correct, a developer edition of star does have that functionality.

superstar

Unfortunately I have sent my ECU to Eurocharged for tuning and they could not turn it off for me, I will be waiting for your instructions..Thanks Ali

amgstyle

could you also send me the directions too. thanks so much

ali saklaoui

sorry to be late.
1 select developer data
2 control unit adaptation(inside the developer kit dont select the control unit adaptation in the menu where fault memory clear memory,actual value etc.....)
3 read and change coding
4 now there is several options,choose the adress 182(lambda sonde hinten katalysator)choose the option AUS
5 press the button F3 on the laptop