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 MANUALSFORD2021TRANSIT-350 XLT, 3.5L ENG VIN G, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - PINPOINT TESTS (EXCEPT DIESEL & HYBRID) (A TO H)PINPOINT TESTS AB: COLD START SYSTEMINTRODUCTION
2021 Ford Transit-350 XLT, 3.5L Eng VIN G, RWD
Pinpoint Tests Ab: Cold Start System: Introduction
2021 Ford Transit-350 XLT, 3.5L Eng VIN G, RWDSECTION Introduction
WARNING:
REFER TO THE FUEL SYSTEM WARNING INFORMATION AT THE BEGINNING OF PINPOINT TEST HC. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN PERSONAL INJURY.
This pinpoint test is intended to diagnose the following:
- fuel injector heaters
- fuel injector heater control module
- harness circuits: FIHC, FIHM, FIH1, FIH2, FIH3, GND, PWRGND, VBATT and VPWR
| Pin | Circuit |
|---|---|
| 2 | GND (Ground) |
| 1 | FIH (Fuel Injector Heater) |
| Pin | Circuit |
|---|---|
| 1 | FIHM (Fuel Injection Heater Monitor) |
| 2 | FIHC (Fuel Injection Heater Control) |
| 3 | PWRGND (Power Ground) |
| 4 | VPWR (Vehicle Power) |
| 5 | VBATT (Battery Voltage) |
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| A | 3 1 4 6 |
FIH4 FIH3 FIH2 FIH1 |
|
| All other vehicles | A | 4 1 3 |
FIH3 FIH2 FIH1 |
Powertrain Control Module (PCM) Connector
For PCM connector views or reference values, refer to Reference Values.
| Vehicle | Connector | Pin | Circuit |
|---|---|---|---|
| EcoSport 1.5L Manual Transmission | 112 PIN | E12 E46 |
FIHM FIHC |
| KA 1.0L | 128 PIN | T13 E33 |
FIHM FIHC |
| KA 1.5L | 198 PIN | E16 | FIHC |
| Ranger | 128 PIN | E13 E41 |
FIHM FIHC |
| All other vehicles | 198 PIN | B28 E16 |
FIHM FIHC |
RENDER: 1.0x
NO RELATED
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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.