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 MANUALSFORD1992TEMPO L4-140 2.3L HSCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPINPOINT TESTSTE - TRANSMISSION OIL TEMPERATURE SENSORTE - TESTING NOTES
1992 Ford Tempo L4-140 2.3L HSC
TE - Testing Notes
1992 Ford Tempo L4-140 2.3L HSCSECTION TE - Testing Notes
NOTE: You should enter this Pinpoint Test only when you have been directed here from Quick Test.
REMEMBER
To prevent the replacement of good components, be aware that the following non-EEC areas may be at fault.
- Transmission fluid level
- Transmission operating temperature
- Ambient Temperature
This Pinpoint Test is intended to diagnose only the following:
- TOT sensor
- Harness circuits: TOT and SIG RTN
- Processor assembly
DESCRIPTION
The Transmission Oil Temperature (TOT) sensor is a thermistor that changes resistance in response to temperature. The TOT sensor resistance decreases as the surrounding fluid temperature increases. The resistance variation is converted into a voltage signal and sent to the processor to give an indication of the transmission fluid temperature.
REMEMBER
To prevent the replacement of good components, be aware that the following non-EEC areas may be at fault.
- Transmission fluid level
- Transmission operating temperature
- Ambient Temperature
This Pinpoint Test is intended to diagnose only the following:
- TOT sensor
- Harness circuits: TOT and SIG RTN
- Processor assembly
DESCRIPTION
The Transmission Oil Temperature (TOT) sensor is a thermistor that changes resistance in response to temperature. The TOT sensor resistance decreases as the surrounding fluid temperature increases. The resistance variation is converted into a voltage signal and sent to the processor to give an indication of the transmission fluid temperature.
RENDER: 1.0x
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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.