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 MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 517 (ENGINE CONTROLS - PINPOINT TEST DO: BAROMETRIC PRESSURE (BARO) SENSOR THROUGH PINPOINT TEST H: FUEL CONTROL - (EXCEPT DIESEL & HYBRID))PINPOINT TEST DX: ENGINE COOLANT TEMPERATURE (ECT) SENSORINTRODUCTION
2021 Ford Edge SE, 4WD
PINPOINT TEST DX: Engine Coolant Temperature (ECT) Sensor: Introduction
2021 Ford Edge SE, 4WDSECTION Introduction
WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 2019 Lincoln Navigator, 2019 Lincoln Nautilus, 2019 Lincoln MKZ, 2019 Lincoln MKT, and 2019 Lincoln MKC. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Engine coolant temperature must be greater than 10°C (50°F) to pass the KOEO self-test and greater than 82°C (180°F) to pass the KOER self-test.
This pinpoint test is intended to diagnose the following:
- ECT sensor (12A648)
- harness circuits: ECT and SIGRTN
- powertrain control module (PCM) (12A650)
TEMPERATURE SENSOR VOLTAGE AND RESISTANCE SPECIFICATIONS
| Temperature | Temperature Sensor Values | |
|---|---|---|
| °C | °F | Resistance (K ohms) |
| 120 | 248 | 1.18 |
| 110 | 230 | 1.55 |
| 100 | 212 | 2.07 |
| 90 | 194 | 2.80 |
| 80 | 176 | 3.84 |
| 70 | 158 | 5.37 |
| 60 | 140 | 7.70 |
| 50 | 122 | 10.97 |
| 40 | 104 | 16.15 |
| 30 | 86 | 24.27 |
| 20 | 68 | 37.30 |
| 10 | 50 | 58.75 |
| 0 | 32 | 95.85 |
| -10 | 14 | 160.31 |
Harness Side
| Circuit | Pin |
|---|---|
| ECT (Engine Coolant Temperature) | 1 |
| SIGRTN (Signal Return) | 2 |
Harness Side
| Circuit | Pin |
|---|---|
| ECT (Engine Coolant Temperature) | E38 |
| SIGRTN (Signal Return) | E13 |
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.