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, 2D CONVERTIBLE, 2.2 4, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)TRANSMISSIONAUTOMATIC TRANSAUTOMATIC TRANSAXLE DIAGNOSIS - 3T40DIAGNOSTIC TESTSP1870, TRANSAXLE COMPONENT SLIPPINGCONDITIONS FOR SETTING DTC P1870
1995 Chevrolet Cavalier LS, 2D Convertible, 2.2 4, Standard
Conditions For Setting DTC P1870
1995 Chevrolet Cavalier LS, 2D Convertible, 2.2 4, StandardSECTION Conditions For Setting DTC P1870
DTC will set under the following conditions:
- DTCs P0122 and P0123 (throttle position), or P0502 (vehicle speed sensor) are not present.
- Engine speed is 2000-3300 RPM.
- MAP is 2.9-8.9 psi (20.3-61.5 kPa).
- Throttle position angle is 13-35 percent.
- TCC is on for 5 seconds or more.
- TCC slip speed is 150-1000 RPM for 10 seconds.
- Speed ratio is .98-1.34.
- Vehicle speed is 40-65 MPH.
- All conditions are met for 3 TCC cycles.
DTC P1870 will be stored in PCM history. MIL will light at first failure signal and PCM will inhibit TCC engagement.
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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.