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 MANUALSCHEVROLET1995CAVALIER LS, 4D SEDAN, 2.2 4REPAIR AND DIAGNOSISTRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSAXLE DIAGNOSIS - 4T40-EDIAGNOSTIC TESTSP0713, TRANS. FLUID TEMPERATURE (TFT) SENSOR CIRCUIT (HIGH INPUT)DIAGNOSTIC PROCEDURES
1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4
Diagnostic Procedures
1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4SECTION Diagnostic Procedures
- Connect scan tool to DLC. Turn ignition switch to ON position. DO NOT start engine. Using scan tool, record failure records for reference. Data will be lost when DTCs are cleared later in this test.
- Select "TFT sensor" on scan tool. If scan tool displays transaxle fluid temperature at -40°F, go to next step. If scan tool does not display transaxle fluid temperature at -40°F, see Diagnostic Aids.
- Turn ignition off. Disconnect transaxle 20-pin connector. Install Jumper Harness (J-39775) to PCM side of transaxle 20-pin connector. Connect fused jumper between transaxle 20-pin connector terminals "L" and "M" (Yellow/Black wire and Black wire). Turn ignition switch to ON position. DO NOT start engine.
- If scan tool does not display transaxle fluid temperature at 304°F (151°C), go to next step. If scan tool displays transaxle fluid temperature at 304°F (151°C), check for open in Yellow/Black wire or Black wire between transaxle 20-pin connector and TFT sensor connector. Repair wire(s) as necessary, then go to step 7). If wire is okay, replace PSA, then go to step 7).
- Connect jumper wire between ground and terminal "L" (Yellow/Black wire) at PCM side of transaxle 20-pin connector. If scan tool displays transaxle fluid temperature at 304°F (151°C), go to next step. If scan tool does not display transaxle fluid temperature at 304°F (151°C), check for open in Yellow/Black wire between PCM side of transaxle 20-pin connector and PCM. Repair wire as necessary, then go to step 7). If wire is okay, replace PCM then go to step 7).
- Check for open in Black wire between PCM side of transaxle 20-pin connector and PCM. Repair wire as necessary, then go to next step.
- After repair is complete, select DTC on scan tool. Select "Clear Info" function. Select "Specific DTC" and enter DTC "P0713". Turn ignition switch to ON position for more than 3 seconds. TFT signal voltage must be less than 4.9 volts. If DTC P0713 is not present, repair is complete. If DTC P0713 is still present, repeat 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.