Hans
Hi,

Is it possible to wire a wideband lambda sensor directly to a SQ6 module without a controller ?
If so, can someone tel me wich pins I have to use ? On the datasheet I can only find:

pin 68 Lambda
pin 38 Lambda Current Pump
pin 69 Lambda
pin 39 Lambda Current Pump

pinout sensor:
1 WBO Vs
2 -
3 +12v source
4 WBO Heater
5 WBO Vs/Ip
6 WBO Ip

partnumber sensor:
bosch 0 281 004 122

Kind Regard,
Hans
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troberts
Hi Hans

We do not officially support Bosch Lambda sensors and would recommend you using one of the Pectel sensors instead:

http://www.cosworth.com/media/199277/29E-071446.pdf

If you want to attempt then the likely set up for the wiring is as follows:

Pin 38 Lambda Pump Current is WBO Ip
Pin 68 Lambda is WBO Vs

WBO Vs/Ip is not known to us.

You will also need to supply 12v from the ECU supplies, a ground which you haven't specified a pin for, and supply the heater from one of the ECU outputs.

The 12v supply and Lambda Heater Output function are assigned and configured via Pi CalTool, although Bosch heater control is not a full supported feature.

Cosworth Support
Cosworth Electronics 

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Hans
Hi,

Thank you for your reply !

We do not officially support Bosch Lambda sensors and would recommend you using one of the Pectel sensors instead:

http://www.cosworth.com/media/199277/29E-071446.pdf

 > We are using SQ6, which doesn't have the connector on the ECE. Ofcourse we can use a female connector to wire it up to the ECU orwire it directly. But when I have a look at pinout information table in the datasheet you posted, I can not find the pinout we have to use. Or what does this abbreviation means:LAM I, LAMV, LAM ID ?I can also find them in the datasheet of the ECU. I suppose this pinout would be the same for a Bosch wideband sensor ?

If you want to attempt then the likely set up for the wiring is as follows:

Pin 38 Lambda Pump Current is WBO Ip
Pin 39 Lambda is WBO Vs

> When I have a look at the Pectel SQ6 datasheet I can find the next pinout for the lambda sensor(s)

pin 68   LAMV1   Lambda
pin 38   LAMI1    Lambda current pump
pin 69   LAMV2   Lambda
pin 39   LAMI2    Lambda current pump

So I suppose you mean pin 68 in stead of pin 39 ? Otherwise we would use 2 times a current pump output.

Thank you in advance



LAM I
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troberts
Hi Hans

LAM I is the lambda pump current
LAM V is the lambda voltage
LAM ID is used to identify the calibration for NTK Wideband sensors and is not relevant to Bosch sensor applications.


This is correct:

pin 68   LAMV1   Lambda
pin 38   LAMI1    Lambda current pump
pin 69   LAMV2   Lambda
pin 39   LAMI2    Lambda current pump

Cosworth Support
Cosworth Electronics 

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