I have a b16 Crx and it shuts off when touching the B and/or C ECU plug. The car won't start again and I pinpointed it to the injectors not firing. Which wire/wires in ECU plug B and/or C would cause this problem?

 

http://www.phearable.net/tech/wiring/obd0ecupins.gif

 

Thanks, but I guess I should have clarified. I have the pinout but I am unsure of the relationships between the sensors linked to those plugs and how they relate to the injector signal because obviously one or more of those wires in the b and c plug are disconnecting and causing the injectors not to fire.

I am receiving no codes, but I don't know if that is because the car dies before the ECU registers a code or if wire/wires in question have no ecu code.

 

if the injectors won't fire, there is an intermittent break in the wiring for them. trace them and ring them out. you should consider checking the earth as well, as this sounds like the symptom of a loose earth to the ECU.

 

What ECU? OBD0 or OBD1?

Is spark also affected? If so, focus on the crank sensor wires at OBD0 B10 and B12.

The wires at A1-A5 and A7 are also critically important for the injectors, but they don't pin to OBD0 connectors B or C.

 

Sorry I have 2 ecus and this problem happens no matter which one is plugged in. They are obd0 PWO and PR3 ecus.

Spark is not afftected

When I play with Plug A the car does not die. It is only when I play with b and c.

 

The two wires for the crank sensor (connector B) and the three wires for the MAP sensor (connector C - C11, 14, 15) seem to be the only possible candidates from what I can see.

 

I have already checked continuity in the injector wires, this is how I know the problem is the ecu is not sending the injector signal.

I never thought to run a new ground to ecu, but I don't see a ground in plug b or c?

 

Correct

 

Thank you, I will pull the pins on those and see if that is the problem.

 

This diagram may also help you...