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 MANUALSSATURN1993SC L4-1.9L SOHC VIN 9REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)DESCRIPTION AND OPERATION
1993 Saturn SC L4-1.9L SOHC VIN 9
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
1993 Saturn SC L4-1.9L SOHC VIN 9SECTION Description and Operation
Coolant Temperature Sensor.:
Coolant Temperature Sensor (CTS) Wiring.:
DESCRIPTION
The coolant temperature sensor is identical to the air temperature sensor. it is mounted in a coolant passage located in the cylinder head. The signal received by the PCM indicates the temperature of the engine coolant, which is an indication of engine operating temperature. This sensor input is used by the PCM for fuel enrichment, ignition timing, EGR operation, canister purge control, idle speed control, and Closed Loop fuel control.
Coolant Sensor And Intake Air Sensor Resistance Chart.:
SENSOR RESISTANCE CHART
The chart lists the resistances of the air temperature sensor and coolant temperature sensor as compared to sensor resistance.
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.