The mechanic looking at the car said the 95 is an OBD2 connector but an OBD1 brain?? Is that correct?
Is a 95 NSX fully OBD2?
- Thread starter NetViper
- Start date
I recommend finding a better mechanic.
I think that 95's were either OBDI or OBDII, depending on production build dates. You could have a "between" car. I seem to remember yours being an early production OBDI car.
NSXT said:
Not true. If you go to your link, the first paragragh says this: All cars and light trucks built and sold in the United States after January 1, 1996 were required to be OBD II equipped. So, all 96's and on are OBDII.
Go down a little to where it says:
1995 Model Year Certifications
1995 Model Year Certifications
NSXT is correct. NetViper needs to find a tech who has a better understand of On Board Diagnostics sytems. All 95 cars are OBDII equipped and compliant.
There are no cars with an OBDI ecu (or its connectors) and an OBDII test connector. Not possible. The engine room wiring harness, and cabin harness would not connect to each other (those two large blue connector near the ecu)
HTH,
MB
There are no cars with an OBDI ecu (or its connectors) and an OBDII test connector. Not possible. The engine room wiring harness, and cabin harness would not connect to each other (those two large blue connector near the ecu)
HTH,
MB
I thought it was fully OBD2 compliant. I got a P0336 code, but it sounds like the code has gone away 
Maybe I have a wiring issue?
Maybe I have a wiring issue?
As a preface, this post is not written by me. It was drafted by a person
that has no posting privileges at this time; however, his message may be
helpful to Net Viper's query. His "surrogate" post is as follows.
All 1995 NSXs are fully OBD2 compliant. Anyone that suggests otherwise knows not the NSX in its full form, and should be removed from the job. Below the glove box, towards the center console is on OBD2 diagnostics connection. If this is so on your 1995 NSX, than how in the world can somebody say that the ECU is an OBD1? Your NSX has the upgraded Split Second box, which is specifically configured for the OBD2 ECU. At the time of the upgrade, the owner was on the phone with MB specifically matching the wiring to the OBD2 harness. Finally, when the car was delivered, there was in the trunk, a laptop with some an OBD2 recording software. That software is called AutoTap, and will not work on OBD1 cars. Unless was installed some
super-duper secret OBD2-to-OBD1 conversion interface between the diagnostics port and the ECU, your car is OBD2. Period, end of discussion and fire your technician.
that has no posting privileges at this time; however, his message may be
helpful to Net Viper's query. His "surrogate" post is as follows.
All 1995 NSXs are fully OBD2 compliant. Anyone that suggests otherwise knows not the NSX in its full form, and should be removed from the job. Below the glove box, towards the center console is on OBD2 diagnostics connection. If this is so on your 1995 NSX, than how in the world can somebody say that the ECU is an OBD1? Your NSX has the upgraded Split Second box, which is specifically configured for the OBD2 ECU. At the time of the upgrade, the owner was on the phone with MB specifically matching the wiring to the OBD2 harness. Finally, when the car was delivered, there was in the trunk, a laptop with some an OBD2 recording software. That software is called AutoTap, and will not work on OBD1 cars. Unless was installed some
super-duper secret OBD2-to-OBD1 conversion interface between the diagnostics port and the ECU, your car is OBD2. Period, end of discussion and fire your technician.
Erased my post, as I had not read the original post carefully enough!
ANYTIME said:
Smells like AndyV chimming on on his old ride :biggrin:
Armando
MiamieNeSeX said:
Ya think?
If it smells like a duck , walks like a duck and quacks like a duck......................................... it's AndyV :biggrin:
PS why cant he post?
Armando
PS why cant he post?
Armando
Autotap produced the P0336 code. P0336 4 CKP Sensor A Range/Performance
The tech is the only one who would work on the car. His diag is the Crank Angle Sensor is bad. The 8 pin connector for the sensor assembly is located by the rear of the alternator and was unplugged and checked with a ohm meter. Should read 650 to 850 ohm. He told me it read as an Open Circuit.
FYI, the sensor is brand new and was replaced 3/16/05
The tech is the only one who would work on the car. His diag is the Crank Angle Sensor is bad. The 8 pin connector for the sensor assembly is located by the rear of the alternator and was unplugged and checked with a ohm meter. Should read 650 to 850 ohm. He told me it read as an Open Circuit.
FYI, the sensor is brand new and was replaced 3/16/05
What are you doing to the car?
Armando
Armando
Was the measurement taken at the ECU or sensor? Eliminate the Split Second box and check again.
-- Chris
-- Chris
NetViper said:
Chris@SoS said:
As far as I know it was taken at the connection by the alternator. I am going there monday to check and bring him the old sensor to see.
The crank/cylinder sensor has four pickups. The pickups are just simple coils and are not failure prone but like every thing they can go bad. If you are reading an open in one of the coils then it needs to be changed. With all the discussion of OBDI OBDII and what the mechanic knows or doesn't know I would question exactly which sensor is open and make sure that it is the same one that the ECU is reporting as bad.
To be a bit more precise: All 1995 US NSXs, not true for european models, not sure about the JDM models. Even my german '98 is neither OBD I nor OBD II, no diagnostic plug anywhere, just the usual plug to bridge for the code lights.ANYTIME said:
As stated, the Crank Angle Sensor was replaced, but it sounds like i am still having the same problem. Just for fun, I had the old CAS tested and it tested fine. What does that say? Is it a wiring issue? Did the CAS even need to be replaced the first time?
I have to talk to the mechanic tomorrow and I sure don't want to replace the sensor AGAIN if it is something else. ECU? SS Box?
Thanks all,
I have to talk to the mechanic tomorrow and I sure don't want to replace the sensor AGAIN if it is something else. ECU? SS Box?
Thanks all,
Attachments
NetViper said:
Why would you need to replace a part that your mechanic says is good? Seems you need a tech who is more familiar with the NSX and the SS box.
Armando
MiamieNeSeX said:
Sorry if that is confusing. That sensor picture is of the old sensor that was said to be "BAD". As you can see, it is fine. Nonetheless, it was replaced 3 months ago. The current sensor in the car is brand new and it sounds like the same problem is still occuring. Therefore, I am guessing it is not the CAS.
so let me get this right your tech said you have an OBDI car when it is an OBDII and now he told you to replace a part that isn't bad if so time to find someone else to work on you car
if so time to find someone else to work on you car
