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.
2002 Mazda B2300 StandardFACTORY OEM SERVICE PROCEDURE
Throttle Position Sensor
THROTTLE POSITION (TP) SENSOR VOLTAGE
| ECM/PCM Wire Color (1) | Closed Throttle Volts (2) | (2) Wide Open Throttle Volts | ||||||
|---|---|---|---|---|---|---|---|---|
| B2300, B3000, B4000 & Tribute | ||||||||
| Gray/White (89) | .49 | 4.65 | ||||||
| Miata | ||||||||
| Green/Black (4V) | 0.1-1.1 | 3.0-4.6 | ||||||
| Millenia | ||||||||
| Yellow/Green (3B) | 0.1-1.1 | 2.8-4.5 | ||||||
| MPV | ||||||||
| Gray/White (89) | 0.1 | 4.9 | ||||||
| Protege & Protege5 | ||||||||
| 2.0L | ||||||||
| Brown/Yellow (89) | 0.1-1.1 | 3.0-4.6 | ||||||
| 626 | ||||||||
| 2.0L | ||||||||
| Violet/Yellow (89) | 0.3-0.7 | 3.4-5.3 | ||||||
| 2.5L | ||||||||
| Violet/Yellow (89) | 0.3-1.0 | 2.8-4.5 | ||||||
|
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Factory Service Tools
Use the Manual With the Right Hardware
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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.