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 SYSTEMSA/C SIGNALDESCRIPTION AND OPERATION
1993 Dodge Colt L4-1468cc 1.5L SOHC
A/C Signal: Description and Operation
1993 Dodge Colt L4-1468cc 1.5L SOHCSECTION Description and Operation
OPERATION
The air conditioning switch applies the battery voltage to the engine control module when the air conditioning is turned on.
When the air conditioning ON signal is input, the engine control module drives the idle air control motor and turns ON the power transistor. As a result, the air conditioning compressor clutch relay coil is energized to turn ON the relay switch, which activates the air compressor magnet clutch.
The air conditioning switch applies the battery voltage to the engine control module when the air conditioning is turned on.
When the air conditioning ON signal is input, the engine control module drives the idle air control motor and turns ON the power transistor. As a result, the air conditioning compressor clutch relay coil is energized to turn ON the relay switch, which activates the air compressor magnet clutch.
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.