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.
2000 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE
Intake Air Temperature (IAT) Sensor
NOTE:
IAT sensor on Protege 1.8L is part of Mass Airflow (MAF) sensor. See SYSTEM & COMPONENT TESTING - MIATA, MILLENIA, MPV, PROTEGE & 626
article.
INTAKE AIR TEMPERATURE (IAT) SENSOR SPECIFICATIONS (B2500, B3000 & B4000)
| Temperature °F (°C) | (1) PID Voltage | (2) Ohms | ||||
|---|---|---|---|---|---|---|
| 50 (10) | 3.52 | 58,750 | ||||
| 68 (20) | 3.06 | 37,300 | ||||
| 86 (30) | 2.62 | 24,270 | ||||
| 104 (40) | 2.16 | 16,150 | ||||
| 122 (50) | 1.70 | 10,970 | ||||
| 140 (60) | 1.35 | 7600 | ||||
| 158 (70) | 1.04 | 5370 | ||||
| 176 (80) | 0.80 | 3840 | ||||
| 194 (90 | 0.61 | 2800 | ||||
| 212 (100 | 0.47 | 2070 | ||||
| 230 (110 | 0.36 | 1550 | ||||
| 248 (120) | 0.28 | 1180 | ||||
|
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INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (MILLENIA 2.3L)
| Temperature °F (°C) | (1) Ohms | |||
|---|---|---|---|---|
| IAT Sensor (Air Cleaner Housing) | ||||
| 68 (20) | 2200-2700 | |||
| 176 (80) | 290-350 | |||
| IAT Sensor (Dynamic Chamber) | ||||
| 77 (25) | 29,700-36,300 | |||
| 185 (85) | 3330-3670 | |||
| IAT Sensor (Lysolm Compressor) | ||||
| 212 (100) | 5600-6900 | |||
|
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INTAKE AIR TEMPERATURE SENSOR RESISTANCE (MIATA, MILLENIA 2.5L, PROTEGE & 626)
| Temperature °F (°C) | (1) Ohms | |||
|---|---|---|---|---|
| Miata | ||||
| 68 (20) | 2090-2810 | |||
| 176 (80) | 274-370 | |||
| Millenia 2.5L | ||||
| 68 (20) | 2200-2700 | |||
| 176 (80) | 290-350 | |||
| MPV | ||||
| 50 (10) | 3300-4100 | |||
| 68 (20) | 2200-2700 | |||
| 86 (30) | 1400-1900 | |||
| Protege 1.6L | ||||
| 50 (10) | 3100-4400 | |||
| 68 (20) | 2200-2700 | |||
| 86 (30) | 1400-1900 | |||
| Protege 1.8L | ||||
| 68 (20) | 2200-2700 | |||
| 176 (80) | 270-370 | |||
| 626 | ||||
| 68 (20) | 35,500-39,200 | |||
| 176 (80) | 7180-7920 | |||
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Factory Service Tools
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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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