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 MANUALSMAZDA1993MX-3 V6-1844CC 1.8L DOHCREPAIR AND DIAGNOSISSPECIFICATIONSELECTRICAL SPECIFICATIONSTHROTTLE POSITION SENSOR
1993 Mazda MX-3 V6-1844cc 1.8L DOHC
Throttle Position Sensor
1993 Mazda MX-3 V6-1844cc 1.8L DOHCSECTION Throttle Position Sensor
IGNITION TIMING [1] 10° ± 1° BTDC
IDLE SPEED [1] 670 ± 30 RPM
AIRFLOW METER
Resistance value between terminals
E2-Vs [3] 20 ohms - 600 ohms
E2-Vs [2] 20 ohms - 1K ohms
E2-Vc 200 ohms - 400 ohms
E2-THA (intake air thermosensor) @
-4°F (-20°C) 13.6K - 18.4K ohms
68°F (20°C) 2.2K - 2.7K ohms
140°F (60°C) 490 ohms - 700 ohms
EGR POSITION SENSOR
Resistance value between terminals with 15 in.Hg vacuum applied
A-B Approx. 5K ohms
A-C 0.7 - 5K ohms
B-C 0.7 - 5K ohms
FUEL INJECTOR
Resistance value 12 ohms - 16 ohms
IDLE SPEED CONTROL (ISC) VALVE
Resistance value 10.7 ohms - 12.3 ohms
THROTTLE SENSOR
Voltage at ECU terminal 2F
Throttle fully closed 0.1 - 1.1V
Throttle fully open 3.1 - 4.4V
WATER THERMOSENSOR
Resistance value @
-4°F (-20°C) 14.6 - 17.8K ohms
68°F (20°C) 2.2 - 2.7K ohms
104°F (40°C) 1.0 - 1.3K ohms
140°F (60°C) 0.5 - 0.64K ohms
176°F (80°C) 0.28 - 0.35K ohms
[1] Diagnosis connector grounded.
[2] Airflow meter plate fully open.
[3] Airflow meter plate fully closed.
IDLE SPEED [1] 670 ± 30 RPM
AIRFLOW METER
Resistance value between terminals
E2-Vs [3] 20 ohms - 600 ohms
E2-Vs [2] 20 ohms - 1K ohms
E2-Vc 200 ohms - 400 ohms
E2-THA (intake air thermosensor) @
-4°F (-20°C) 13.6K - 18.4K ohms
68°F (20°C) 2.2K - 2.7K ohms
140°F (60°C) 490 ohms - 700 ohms
EGR POSITION SENSOR
Resistance value between terminals with 15 in.Hg vacuum applied
A-B Approx. 5K ohms
A-C 0.7 - 5K ohms
B-C 0.7 - 5K ohms
FUEL INJECTOR
Resistance value 12 ohms - 16 ohms
IDLE SPEED CONTROL (ISC) VALVE
Resistance value 10.7 ohms - 12.3 ohms
THROTTLE SENSOR
Voltage at ECU terminal 2F
Throttle fully closed 0.1 - 1.1V
Throttle fully open 3.1 - 4.4V
WATER THERMOSENSOR
Resistance value @
-4°F (-20°C) 14.6 - 17.8K ohms
68°F (20°C) 2.2 - 2.7K ohms
104°F (40°C) 1.0 - 1.3K ohms
140°F (60°C) 0.5 - 0.64K ohms
176°F (80°C) 0.28 - 0.35K ohms
[1] Diagnosis connector grounded.
[2] Airflow meter plate fully open.
[3] Airflow meter plate fully closed.
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.