Wide band wiring

[1of1547]

I am having problems with my wide band. Can anybody tell me how to check the wiring. What is the voltage on each wire, grounds, etc.
Thanks,

 

[TurboDave]

Some information might help. What type do you have. What do you have it hooked into that will display it's results. etc.
INFO

 

[1of1547]

Sorry Dave, it is a typical non calibrated wide band for a classic FAST system. I think it is a NTK 7 wire. I think the original application was for a 2003 Honda Accord V6. When ever I do a data log the wide band correction just flat lines across the center of the screen. Everything has been tested (harness, cables, ECM) or replaced (sensor) and it still doesn't work. Everything was fine until I changed from a PT&E FAST harness to a Caspers harness. Since then lost my wide band. The PT&E harness is powered by the battery and the Caspers is plug and play. So I am wondering if the WB has lost a power or ground.

 

[TurboDave]

Sorry Dave, it is a typical non calibrated wide band for a classic FAST system. I think it is a NTK 7 wire. I think the original application was for a 2003 Honda Accord V6. When ever I do a data log the wide band correction just flat lines across the center of the screen. Everything has been tested (harness, cables, ECM) or replaced (sensor) and it still doesn't work. Everything was fine until I changed from a PT&E FAST harness to a Caspers harness. Since then lost my wide band. The PT&E harness is powered by the battery and the Caspers is plug and play. So I am wondering if the WB has lost a power or ground.

Hmmm, sounds like a call to Caspers might be in order!! When you say the "correction flat lines" , is that all? Does the WB show an A/F ratio and just the correction flat lines or are they both not reading.. I would think FAST would be like most and show you what A/F ratio is actually being measured along with a correction value that's being applied.
At least my that's what I see on my Translator Pro.

 

[1of1547]

I will have to take another look this weekend. But I am almost 100% sure it is not registering nothing. Normally the WB correction will go up and down just like any of the other parameters. Now it just flat lines across the center of the screen.

I sent the adapter harness back to John. He bench tested and put the harness in another car and it worked. So somewhere I have a gremlin running around somewhere. The last time I messed with the car I used a test light to see if the WB was getting any voltage. Some of the wires did have voltage. But I can't remember exactly which ones. I've been looking for a troubleshooting chart or info. But haven't found any yet.