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Home >> Ford >> 1990 >> Bronco II RWD, Standard, M5OD-R1 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Test J - Fuel Pump Circuit >> Test J - Introduction
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Test J - Introduction

NOTE: Perform this test when Service Code 87, 95, or 96 is displayed during QUICK TEST or when directed here by other test procedures.
NOTE: This test is intended to diagnose only the following:
TEST PIN NO. 22 IDENTIFICATION

Application (Test Pin No.) Wire Color
Pin 22
Bronco & F-Series Pickup Light Blue/Orange
2.3L Orange/Light Blue
All Others Tan/Light Green
Pin 8, 19 or 50, Power-to-Pump
2.3L & 2.9L (Truck) & 4.0L (Bronco II & Ranger) Orange/Light Blue
Bronco & F-Series Pickup Dark Green/Yellow
Cougar & Thunderbird Pink/Black
E-Series (Van) Orange/Light Blue
All Others Pink/Black
Batt (+) Ckt
Bronco, E-Series (Van) & F-Series Pickup Yellow
2.3L & 2.9L PFI (Truck) White/Green
4.0L PFI (Aerostar) Yellow
4.0L PFI (Bronco II & Ranger) Black/Yellow
Pin 37 or 57 Red
VPWR Ckt at Relay (Bronco, E-Series (Van) & F-Series Pickup) Red
Fig 1: 2.3L MA PFI, 2.9L, & 4.0L PFI (Truck) Fuel Pump Ckt Diagram
G90E12447
Fig 2: 4.9L PFI, 5.0L, 5.8L, 7.5L PFI Fuel Pump Ckt Diagram
G90F12448