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.
Engine Controls - Sensor Operating Range Charts: Introduction
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a diagnostic trouble code, but it may cause driveability problems.
| ECM/PCM Terminal (1) | (2) Voltage | ||||
|---|---|---|---|---|---|
| SGC Signal | 5 (1 pulses/rev) | ||||
|
|||||
| Terminals (1) | Temperature | Ohms | ||
|---|---|---|---|---|
| "A" & "B" | 68°F (20°C) | 950-1250 | ||
|
||||
| Temperature | Ohms |
|---|---|
| 68°F (20°C) | 2200-2700 |
| 176°F (80°C) | 290-350 |
| Vacuum | Voltage |
|---|---|
| 0 in. Hg | 2.5 |
| 2.0 in. Hg | 0.5 |
| Operating Condition | Volts |
|---|---|
| Acceleration | 0.5-1.0 |
| Deceleration | 0.0-0.5 |
| Application | Ohms |
|---|---|
| 77°F (25°C) | 30,000-36,00 |
| 185°F (85°C) | 3300-3700 |
| ECM/PCM Wire Color | Closed Throttle Volts | WOT Volts | ||
|---|---|---|---|---|
| Red/Blue (3F) (1) | 0.1-1.1 | 2.8-4.5 | ||
|
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| Condition (1) | Continuity Between Terminals "C" & "D" | ||
|---|---|---|---|
| .006" (.15 mm) | Yes | ||
| .020" (.5 mm) | No | ||
|
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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.
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