93 FZJ80 Won't Turn Over/EFI Relay Diagnosis

[mgriff67]

I spent the better part of yesterday trying to diagnose why my 93 fzj80 would crank, but not turn over. I was able to get the vehicle to turn over if I jumped the FP and power supply on the OBD port. Fuel pump will power and the motor will turn over with a little gas so I assume the issue is in the COR/EFI circuit. I was able to bench test the two just want someone to confirm my diagnosis. EFI was tested following the attached wiring diagram. Should I replace both COR and EFI? What could cause these to go bad? Thanks!

EFI:
ECU logic ↔ Ground = Open Loop
+12v ↔ Load = 71.1ohms

COR:
STA → E = 24.3ohm
FC → E = Open Loop
+B → FP = Open Loop

 

[Malleus]

Idle air control valve

 

[mgriff67]

I started talking about the wrong issue. IACV 6-pin connector came in the mail this morning.

 

[Malleus]

FWIW, the '93-'94 IACV is NLA. You can replace it with the later '95-'97 model: 22270-66011, but they are not cheap.

 

[mgriff67]

FWIW, the '93-'94 IACV is NLA. You can replace it with the later '95-'97 model: 22270-66011, but they are not cheap.

Valve itself is fine, just needed to replace the plastic 6-pin since it disintegrated.