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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBUICK1996CENTURY SEDAN L4-2.2L VIN 4REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSSENSORS AND SWITCHES - COMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)TESTING AND INSPECTION
1996 Buick Century Sedan L4-2.2L VIN 4
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
1996 Buick Century Sedan L4-2.2L VIN 4SECTION Testing and Inspection
SCAN TOOL TESTING
A scan tool displays the engine temperature in degrees Celsius. After the engine is started, the temperature should rise steadily to about 90°C (194°F) then stabilize when the thermostat opens. If the engine has not been run for several hours (overnight), the ECT and AT temperatures should be close to each other hard fault in the ECT sensor circuit should set either a DTC P0117 or P0118. An intermittent failure in the ECT sensor circuit should set either a P1114 or P1115. The DTC charts also contain a chart to check for sensor resistance values relative to temperature.
A scan tool displays the engine temperature in degrees Celsius. After the engine is started, the temperature should rise steadily to about 90°C (194°F) then stabilize when the thermostat opens. If the engine has not been run for several hours (overnight), the ECT and AT temperatures should be close to each other hard fault in the ECT sensor circuit should set either a DTC P0117 or P0118. An intermittent failure in the ECT sensor circuit should set either a P1114 or P1115. The DTC charts also contain a chart to check for sensor resistance values relative to temperature.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.