Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021F-150 LIMITED, 3.5L ENG VIN 8, RWDREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTMEMORY MODULESENGINE CONTROLS - PINPOINT TESTS (EXCEPT DIESEL & HYBRID) (A TO H)PINPOINT TESTS DI: DIRECT FUEL INJECTION FUEL INJECTORINTRODUCTION
2021 Ford F-150 Limited, 3.5L Eng VIN 8, RWD
Pinpoint Tests Di: Direct Fuel Injection Fuel Injector: Introduction
2021 Ford F-150 Limited, 3.5L Eng VIN 8, RWDSECTION Introduction
NOTE:
Do not apply battery voltage across the fuel injector circuits. Permanent damage to the fuel injector may result.
This pinpoint test is intended to diagnose the following:
- fuel injectors (9F593)
- harness circuits: INJ and INJRTN
- PCM (12A650)
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Bronco Sport 1.5L, EcoSport 1.0L, Escape/Kuga 1.5L, Transit Connect 1.0L | A | 2 1 |
INJRTN INJ |
| Bronco Sport 2.0L, Expedition, Explorer 2.3L, Explorer 3.3L, Navigator | B | 1 2 |
INJRTN INJ |
| Continental | C | 2 1 |
INJRTN INJ |
| Corsair, Escape/Kuga 2.0L, F-150 3.3L, F-150 3.5L, Ford GT, Transit TiVCT 3.5L | B | 2 1 |
INJRTN INJ |
| Mustang 2.3L | D | 2 1 |
INJRTN INJ |
| All other vehicles | E | 2 1 |
INJRTN INJ |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to Reference Values.
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| Bronco Sport 1.5L, Escape/Kuga 1.5L, Transit Connect 1.0L | 198 PIN | E89 E88 E77 E82 E78 E83 |
INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| Bronco Sport 2.0L, Corsair, Escape/Kuga 2.0L | 198 PIN | E89 E94 E88 E93 E87 E82 E78 E83 |
INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| Continental, EcoSport 2.0L | 198 PIN | E92 E85 E93 E82 E88 E83 E87 E84 |
INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| EcoSport 1.0L Automatic Transmission | 198 PIN | E93 E82 E89 E90 E87 E84 |
INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| EcoSport 1.0L Manual Transmission | 198 PIN | E76 E93 E82 E92 E84 E91 |
INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| Edge 2.0L, Explorer 2.3L, Mustang 2.3L, Nautilus 2.0L, Ranger, Transit Connect 2.0L | 198 PIN | E89 E94 E88 E93 E77 E82 E78 E83 |
INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| Expedition High Output, Navigator High Output | 198 PIN | E93 E88 E81 E82 E83 E84 E92 E87 E94 E89 E91 E86 |
INJ6RTN INJ6 INJ5RTN INJ5 INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| F-150 2.7L, F-150 3.3L, F-150 3.5L | 306 PIN | E83 E104 E85 E106 E82 E103 E43 E64 E45 E66 E87 E108 |
INJ6RTN INJ6 INJ5RTN INJ5 INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| F-150 5.0L | 306 PIN | E86 E107 E45 E66 E43 E64 E83 E104 E44 E65 E82 E103 E85 E106 E87 E108 |
INJ8RTN INJ8 INJ7RTN INJ7 INJ6RTN INJ6 INJ5RTN INJ5 INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| Ford GT | 198 PIN | E94 E95 E92 E85 E88 E83 E93 E82 E89 E90 E87 E84 |
INJ6RTN INJ6 INJ5RTN INJ5 INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| Mustang 5.0L | 306 PIN | E20 E41 E65 E44 E64 E43 E45 E66 E22 E1 E3 E24 E103 E124 E23 E2 |
INJ8RTN INJ8 INJ7RTN INJ7 INJ6RTN INJ6 INJ5RTN INJ5 INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| Transit GTDI 3.5L | 306 PIN | E20 E41 E64 E43 E1 E83 E65 E44 E45 E66 E23 E2 |
INJ6RTN INJ6 INJ5RTN INJ5 INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
| All other vehicles | 306 PIN | E20 E41 E64 E43 E22 E1 E65 E44 E45 E66 E23 E2 |
INJ6RTN INJ6 INJ5RTN INJ5 INJ4RTN INJ4 INJ3RTN INJ3 INJ2RTN INJ2 INJ1RTN INJ1 |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.