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 MANUALSTOYOTA1991SUPRA L6-3.0L DOHC TURBO (7M-GTE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSCOOLANT TEMPERATURE SENSOR/SWITCH (FOR COMPUTER)TESTING AND INSPECTION
1991 Toyota Supra L6-3.0L DOHC Turbo (7M-GTE)
Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection
1991 Toyota Supra L6-3.0L DOHC Turbo (7M-GTE)SECTION Testing and Inspection
1. Disconnect the connector from the Water Temperature Sensor.
2. Using an Ohmmeter, measure the resistance between the terminals.
3. Refer to the specification chart and compare readings with appropriate temperature parameters.
4. If readings are not as specified, replace the Water Temperature Sensor.
2. Using an Ohmmeter, measure the resistance between the terminals.
Checking Water Temperature Sensor:
3. Refer to the specification chart and compare readings with appropriate temperature parameters.
Water Temperature Sensor (THW):
4. If readings are not as specified, replace the Water Temperature Sensor.
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.