I have searched but I can't seem to find the right way to wire my MAP. I have a 99 Civic SI and I put a JDM B16A in. Wires from ecu are yellow/red, red/green, green/white...wires on plug that I am splicing in from the JDM motor are green/white, red/blue, yellow. Can anyone help me?! My motor starts and doesn't want to idle for a couple of seconds until the CEL comes on and then it idles good, horrible low RPM throttle response though. I have switched the MAP out with a known good one from another B16 and the car wouldn't start. I have tried wiring several ways. HELP!

 

Your car is OBD2, what OBD is the Engine?

 

Obd1 for reference:
d21 = sensor ground
d19 = +5v dc
d17 = map input


OBD2a OBD2b Function OBD1 Color
D03____C17___MAP____D17 Pink/White
D04____C19___VCC1___D19 Yellow/Green
D12____C07___SG1____D21 Green/Blue


I'd assume if you took a multimeter and tested the connections (grounding each one individually, ignition on), you'd get +5v at one pin, 0v at another, and a varying voltage (if any) for the third. Chances are those aren't the wires. THe TPS wires are different too, so I can't really help with OBD2.

Otherwise it will be easier just running new wires to the harness, to those pins posted above.

 

the engine is OBD1. What wire goes where on the clip...starting from closest to the firewall?