Narrowband Simulation Wiring

[NewV]

I want to do simple NB simulation with a permanent install of my WB02. This is a PLX WB so I need to place a 20 Ohm resistor across the NB Heater power and Heater ground. I can then use the controller output to the NB O2 signal input. Sounds simple enough but I want it to look clean. I've ordered a new NB pigtail but not sure which of the 4 wires does what. I have a PCM diagram but don't want to tear apart my front end to get to the PCM to see what color the wires are.

Does anyone know what the 4 NB wires are by color or location on the connector? Basically its 2 each power and ground for heater and signal but which two?

On the PCM side of the connector the wires are grey/white, red or pink/black, yellow or brown, brown or purple/white. Hard to see down there. On the NB side of the connector I have 2 black, 1 white, 1 blue. I'm assuming the 2 black are grounds.

This is an 2005 LS6 CTS-V, thanks for any help. BTW I've seen the LC-1 hookups but none of the wires are described by color.

[ringram]

Pop a DMM onto it. You have 12V, GRND, Sig Grnd, Sig.
Sig is like 4.5v, 12v is well.. 12v I think the main ground is next to the 12v.. but check the plugs.
Definately use a MM to check though.

[NewV]

Pop a DMM onto it. You have 12V, GRND, Sig Grnd, Sig.
Sig is like 4.5v, 12v is well.. 12v I think the main ground is next to the 12v.. but check the plugs.
Definately use a MM to check though.

I would have expected the Signal to be <= 1V for the NB??

[SSpdDmon]

This is from a 99 C5 shop manual. I don't know if it would be the same or not for the Cadi...



A - Needs to be grounded to the chasis.
B - NBO2 signal wire.
C - Sensor heater ground.
D - Sensor power supply.

[350SS]

Which sensor are you replacing, bank 1 or 2?

[350SS]

As far as I know for the 05 CTSV:
Bank 1 Sensor 1 at the plug
Pos A Tan O2 Low
Pos B Ppl/Wht O2 High
Pos C Gry/Wht Heater Low
Pos D Pnk/Blk Heater High

Bank 2 Sensor 1 at the plug
Pos A Tan O2 Low
Pos B Ppl O2 High
Pos C Lt Grn Heater Low
Pos D Pnk/Blk Heater High

Hope that helps

Max

If you get this to work please post up; I can't figure out what to wire the gray (NB) wire from the PLX unit to...O2 high or Low and then what goes to the one left over?

[joecar]

GM Service Manual->2005->Cadillac->CTS->5.7 confirms what 350SS said.

[NewV]

Which sensor are you replacing, bank 1 or 2?

Drivers side before the CAT not sure what bank # that is but it looks like 1 based on your wiring list.

[joecar]

Bank 1 is LHS of car (US driver side), contains the odd numbered cylinders.

[NewV]

As far as I know for the 05 CTSV:
If you get this to work please post up; I can't figure out what to wire the gray (NB) wire from the PLX unit to...O2 high or Low and then what goes to the one left over?

Max - I posted on the PLX board but their response levels are a bit inferior to the crack team here. I'll let you know how it works out should have it done by next weekend waiting on some parts. Based on SSpdDmon's post I'm assuming grey goes into Pos B.

Everybody else - Thanks as usual