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 MANUALSTOYOTA1996TERCEL DX, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM TESTS W/CODESCIRCUIT TESTSDTC P0116 - ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEMCIRCUIT DESCRIPTION
1996 Toyota Tercel DX, 4D Sedan, Automatic
Circuit Description
1996 Toyota Tercel DX, 4D Sedan, AutomaticSECTION Circuit Description
The ECT sensor is a thermistor sensor that monitors engine coolant temperature. DTC is set when ECT sensor temperature is 86°F (30°C) or less for at least 20 minutes of engine operation. Possible causes are:
- Engine Coolant Temperature (ECT) sensor.
- Cooling system.
NOTE:
If DTCs P0115 and P0116 are output together, an open may exist in ECT sensor circuit. Perform DTC P0115 circuit test before performing DTC P0116 circuit test.
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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.