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 MANUALSDODGE1993COLT L4-1468CC 1.5L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTHROTTLE POSITION SENSORDESCRIPTION AND OPERATION
1993 Dodge Colt L4-1468cc 1.5L SOHC
Throttle Position Sensor: Description and Operation
1993 Dodge Colt L4-1468cc 1.5L SOHCSECTION Description and Operation
PURPOSE
The throttle position sensor converts the throttle position opening into a voltage and inputs it to the engine control module, which then controls the fuel injection, based on the input signal.
OPERATION
The 5 V power in the engine control module is supplied to the throttle position sensor. It flows through the resistor in the sensor and is then grounded in the engine control module.
As the throttle valve shaft rotates from the idle position to wide open position, the resistance between the variable resistor terminal of the throttle position sensor and the ground terminal increases. As a result, the voltage at the throttle position sensor variable resistance terminal also increases.
The throttle position sensor converts the throttle position opening into a voltage and inputs it to the engine control module, which then controls the fuel injection, based on the input signal.
OPERATION
The 5 V power in the engine control module is supplied to the throttle position sensor. It flows through the resistor in the sensor and is then grounded in the engine control module.
Throttle Position Sensor Angle To Voltage Scale:
As the throttle valve shaft rotates from the idle position to wide open position, the resistance between the variable resistor terminal of the throttle position sensor and the ground terminal increases. As a result, the voltage at the throttle position sensor variable resistance terminal also increases.
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.