darkdementshun

I have a 96 Integra LS that i bought with a GSR swapped into it. It is converted to OBD1 and running on a chipped p28 that supposedly has stock GSR maps on it. The car drives fine, but VTEC does not engage and it has the Check Engine Light on. I jumped the little connector by the passengers kickpanel like any other OBD1 Honda, and i was getting a VTEC oil pressure code. I think i figured that out, but here is where my questions begin:

-On any other OBD1 Honda, i can jump the connector in the passenger kickpanel and the CEL will cycle through its codes. On this car, i jump the wires together and it runs through the codes one time and the Check Engine Light stays solid; no cycling through again.

-Also, now i am getting ABS codes 1 *pause* 8 and 4 *pause* 2. Those codes do not cycle through either. They cycle one time, and then thats it till you turn the ignition off and back on again. The codes are for "high pressure system", whatever that means? and left front wheel sensor.

Any insight would be great!

darkdementshun

So does anyone know about the CEL?
Surely somebody here on Honda Tech.

darkdementshun

Also, not to bump my own post too much, but more to elaborate on specific questions.
I have VTEC wired straight up to the engine harness. When i have the VTEC pressure switch and solenoid each wired directly to their corresponding units, i get a CEL for the VTEC pressure switch. Then i read on one of the pinout guides that in OBD2a cars to wire the pressure switch in with the solenoid wire, which seems like it would basically just be bypassing the pressure switch. When i have it wired up that way, the code goes away, but still no VTEC and then i just have a mystery code that makes the Check Engine Light stay on, but flashes no code.

Come on guys, any insight?

darkdementshun

Still nobody?

darkdementshun

Wow... Honda Tech not being very technical lately. haha

HONDRETTI

you might be asking a little too much hence why you dont have any replies but your own. i dont understand how you are checking codes with a jumper if your car was previously obd2 i assume. they dont have one, only a service connector behind the radio. if your car is running an obd1 ecu/harness, you should be grounding terminal D4 on the harness while its still plugged into the ecu. stick one end in D4 and the other on a good ground. see what you get. and since you have no vtec, make sure it is wired up correctly, theres a thread i cant find at the moment that may help...

HONDRETTI

https://honda-tech.com/zerothread?id=833163

darkdementshun

Thanks for the reply! I just figured i would ask my questions in 1 thread rather than starting several different ones.

Yes, the car is OBD2 and i do have an OBD1 ecu and conversion harness. HOWEVER i do have the same blue service connector with black and brown wires that the EK's have (pictured HERE), and i have read other places that you can use the factory blue little connector there to check codes if you are running an OBD1 ecu. It seems to work... for the most part. I will be sure to ground D4 though and see if anything changes. I had not heard of that before, so i hope it works!

Oh, and so far as VTEC wiring goes, i have that figured out for the most part. Just wondering if anyone else has had problems with it like i described above?