Just wondering if anyone had a wiring diagram for a '94-'97 Accord and could tell me the pinout on the ECU harness that sends CEL signals to the dash light. I am looking to wiring in a switch so that I can selectively turn it on and off. The reason I want to do this is that my CEL is constantly on and reporting codes 71-75. The reason for this is that I am running my '93 H22A off of a '96 OBD2 P13 ECU and it is not reading a couple of the sensors correctly (the ones that were moved from the distributor to the crank); the car runs fine though.

I'd like to do it at the ECU side since it would be easier than tearing the dash apart, and it would let me mount the switch out of view. Any help would be apprechiated.

 

Simplest and most safest way is just to buy the correct ECU. The car may run "fine", but you could be losing some power. Also, if the ECU is turning the CEL on, then that means that it is probably putting the ECU into "limp mode". This will allow the car to run "fine", but will not allow you to see the motors true potential.