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 XL, 3.5L ENG VIN G, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 510 (ENGINE CONTROLS - PINPOINT TEST DO: BAROMETRIC PRESSURE (BARO) SENSOR THROUGH PINPOINT TEST HC: FUEL DELIVERY SYSTEM - (EXCEPT DIESEL & HYBRID))PINPOINT TEST DV: THROTTLE BODY ASSEMBLY ELECTRONIC THROTTLE CONTROL (ETC)INTRODUCTION
2021 Ford Transit-350 XL, 3.5L Eng VIN G, RWD
Pinpoint Test DV: Throttle Body Assembly Electronic Throttle Control (Etc): Introduction
2021 Ford Transit-350 XL, 3.5L Eng VIN G, RWDSECTION Introduction
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WARNING:
Substantial opening and closing torque is applied by this system. To prevent injury, be careful to keep fingers away from throttle mechanism when actuated. Failure to follow these instructions may result in personal injury.
This pinpoint test is intended to diagnose the following:
- electronic throttle body (ETB) (9F991)
- electronic throttle body throttle position sensor (ETBTPS) (9E928)
- harness circuits: ETCRTN, ETCREF, TP, TP1, TP2, TACM+, and TACM-
- PCM (12A650)
Harness Side
| Circuit | Pin |
|---|---|
| ETCREF (Electronic Throttle Control Reference Voltage) | 5 |
| ETCRTN (Electronic Throttle Control Return) | 4 |
| TP (Throttle Position) | 3 |
Harness Side
| Circuit | Pin |
|---|---|
| TACM+ (Throttle Actuator Control Motor +) | 1 |
| TACM- (Throttle Actuator Control Motor -) | 2 |
Harness Side
| Circuit | Pin |
|---|---|
| ETCREF (Electronic Throttle Control Reference Voltage) | E10 |
| ETCRTN (Electronic Throttle Control Return) | E16 |
| TACM- (Throttle Actuator Control Motor -) | E51 |
| TACM+ (Throttle Actuator Control Motor +) | E50 |
| VPWR (Vehicle Power) | B100 |
| PWRGND (Power Ground) | B96 |
| TP (Throttle Position) | E54 |
| PWRGND (Power Ground) | B97 |
| PWRGND (Power Ground) | B98 |
| PWRGND (Power Ground) | B99 |
| VPWR (Vehicle Power) | B102 |
| VPWR (Vehicle Power) | B101 |
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.