Quote:
Originally Posted by upstate240sx
actually blue sockets are also on odbI sentras, nx2ks you find me a blue socket harness and it will definately be odbI, white sockets are also found in odbII cars. every blue harness ive pulled is odb1 and every white harness is odbII. thats not misinformation ive owned at least 7 nissan cars within the last year along, and have looked at the harnesses on all of them. its just a coincidence that s14s are white plug and s13s are blue plugs. theres not a different color plug for every nissan generation. its has nothing to do with generation. that change in color has everything to do with odb. the blue plugs have a different pinout then the white plug ecus. this is the same for all nissan vehicles. if they have a white plug that are odbII. if they have a blue plug they are odbI.
and as far as coils go, an odb I harnnes (blue plug) will be external coil. and an odbII harness (white plug) will be internal coil. if you look at an odbII harness there will be no wires that will allow you to plug in a power transistor or a signal wire for a coil.
the same can be said for an odbI harnnes, the pinout on the plug for the distributor will not run a internal coil distributor. odbI harnnes also have the wiring to support an external coil.
even here
#/f/tech-talk/136803...ml#post1291500
you said that s14 harnesses (white socket odb2) cannot run an external coil and you explained why.
have you seen any blue plug odbII harnesses, no. have you seen any odb II harnnes with external coil no.
and as far as the ka series engine harness is concerned a 1 wire o2 sensor vs a 3 wire heated o2 sensor can be another tell tale sign of odb1 or obd 2
nothing i said at all was mis information. |
As far as blue/white sockets go, I was speaking Schassis only. I don't do enough other Nissan work to look at ECU plugs. I do however do a shit fuck ton of Schassis work, and I can say for absolute certain that
every S14 engine harness has a white socket for the ECU. I've parted over 40 of them over the last few years and serviced another hundred, trust me. All S14 harnesses have a white socket, period. But, not ALL S14s are OBD-II. 1995 models with the OBD plug under the glovebox, beside the console are OBD-I. Period. They may meet the OBD-II mandates but on any code scanner or other unit they will show OBD-I codes. Even the 1995 FSM diagnoses problems based on OBD-I codes, NOT OBD-II. The codes referenced in the FSM are different for 96-98 models.
So again, the color of the ECU socket has nothing to do with OBD on Schassis models. All S13s use a blue socket. All S14s use a white socket. All 91-95 models are OBD-I. All 96-98 models are OBD-II. Period. In your argument you could say SOHC models, with a blue socket, are OBD-I. There wasn't even a federal mandate back in 89-90, in fact those cars didn't even have a CONSULT port.