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BOSCH 5 Wire wideband and Kpro, Help

24K views 13 replies 4 participants last post by  Hoffy 
#1 ·
BOSCH 5 Wire wideband and Kpro

Really need some help. :(

So i have Bosch wideband o2 sensor(Bosch
part no 0 258 007 137) and i want to connect it to my Hondata Kpro.

I already have 4 wires ready for wideband o2, but Bosch wideband is 5 wire.
So which wire goes where? Because wideband sensor has one that shouldn't be connected.

Wire colors on Bosch sensor are:

RED - ?
BLACK - ?
WHITE - ?
GRAY - ?
YELLOW - ?

This is the sensor - http://www.lambdasensor.com/main/bosch/price.pl?item=0258007137

P.s. As far as i found out from here - http://www.motec.com/sensors/lambdasensors/

GRAY - heater + (what pin on ECU?)
WHITE - heater - (what pin on ECU?)

Now i'm confused.. :mindboom:
 
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#2 ·
My idea is this:

1 Primary O2 signal (+) -> Ip (RED) wire on Bosch?
Continuity to C101 pin 19 (from there the wire goes over to ecu A6)

2 Primary O2 ground (-) -> (BLACK) wire on Bosch?
Continuity to C101 pin 13 (from there the wire goes over to ecu A16)

3 Primary O2 Heater signal (+) -> GRAY wire on Bosch?
Continuity to C101 pin 15 (from there the wire goes over to ecu A22)
*NOTE: This wire is also divided and leads into a relay.

4 Primary O2 Heater ground (-) -> WHITE wire on Bosch?
Continuity to C101 pin 10 (from there the wire goes over to ecu pin A1)
 
#4 · (Edited)
I actually had a Bosch one but cant remember the colors, I sold it a while back, Mine was only a 4 wire sensor like the Denso , just different colors. Are you sure you even have the right one? I dont even recall seeing any red or yellow wires on any Brand RSX-S one?
I have brand new Denso primary RSX-S wideband sensors instock ready to ship only $120 to your door, plug and play no messing around with your old sensor. Ive personally already had all these headaches with Primary wideband sensors your having, not even worth it to me, I bought a brand new one and plugged her in and bam!, I was back on track
 
#8 ·
I know that some people are using 5 wire wideband sensors.
need some more input on this..

5 wire wideband uses some kind of tank pressure sensors or something like this.. And the other 4 wires are the same as 4 wire sensor, so why it should be impossible to use 5 wire?
 
#12 ·
this is just a guess from taking a quick look at my wire manuals but its worth a shot because you dont want to use the proper sensor for your setup, ebaby has new denso sensors for $100 so dont say they cost to much and if you fuck up your computer its not my fault

the 5wire info came from my TL 04-06 manual so not sure about other years

5wire - rsx computer
yellow- A1
gray - A6
blue - tap A22
black - A16
white- dont use
 
#13 ·
I dod some research and find some good info about 5 wire bosch. :up:

Wire colors for Bosch LSU 4.2 are:

1. RED - Pump+
2. BLACK - Sensor+
3. WHITE - Heater -
4. YELLOW - Pump-/Sensor-
5. GRAY - Heater+

So:

1 Primary O2 signal (+) -> BLACK wire on Bosch
Continuity to C101 pin 19 (from there the wire goes over to ecu A6)

2 Primary O2 ground (-) -> YELLOW wire on Bosch
Continuity to C101 pin 13 (from there the wire goes over to ecu A16)

3 Primary O2 Heater signal (+) -> GRAY wire on Bosch
Continuity to C101 pin 15 (from there the wire goes over to ecu A22)
*NOTE: This wire is also divided and leads into a relay.

4 Primary O2 Heater ground (-) -> WHITE wire on Bosch
Continuity to C101 pin 10 (from there the wire goes over to ecu pin A1)
 
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