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 MANUALSCHEVROLET2001CAVALIER LS, 2.4 TREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 8 (ENGINE CONTROL SYSTEM SELF-DIAGNOSTICS - 5.7L)DIAGNOSTIC TESTSDTC P1571: TRACTION CONTROL TORQUE REQUEST CIRCUIT ("Y" BODY)DIAGNOSTIC PROCEDURES
2001 Chevrolet Cavalier LS, 2.4 T
Diagnostic Procedures
2001 Chevrolet Cavalier LS, 2.4 TSECTION Diagnostic Procedures
WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
- Perform On-Board Diagnostic (OBD) system check. See ON-BOARD DIAGNOSTIC (OBD) SYSTEM CHECK . After performing OBD system check, go to next step.
- Turn ignition on, with engine off. Using scan tool, read DTCs. If any ABS/Traction control DTCs are also set, diagnose affected DTCs first. If no ABS/Traction control DTCs are set, go to next step.
- Turn ignition off. Disconnect EBTCM connector. Turn ignition on. Using a DVOM and Connector Test Kit Adaptor (J-35616-A), check voltage between ground and EBTCM connector, DT circuit. If voltage reading is about 5 volts, see appropriate ANTI-LOCK article in BRAKES. If voltage reading is not as specified, go to next step.
- Using a DVOM, check voltage between ground and EBTCM connector, DT circuit. If voltage reading is about battery voltage, go to step 7. If voltage reading is not as specified, go to next step.
- Connect a test light between battery positive and EBTCM connector, DT circuit. If test light illuminates, go to step 8. If test light does not illuminate, go to next step.
- Check for open in DT circuit. Repair as necessary. After repairs, go to step 11. If circuit is okay, go to step 9.
- Repair short to battery voltage on DT circuit. After repairs, go to step 11.
- Repair short to ground on DT circuit. After repairs, go to step 11.
- Check terminal connections at PCM. Repair terminals as necessary. After repairs, go to step 11. If terminals are okay, go to next step.
- Replace PCM. Program replacement PCM using required equipment. After replacing PCM, go to next step.
- Using scan tool, select DTC, CLEAR INFO function. Start and warm engine to normal operating temperature. Select DTC, SPECIFIC, then enter this DTC. Operate vehicle within conditions for setting this DTC. If scan tool indicates that this test ran and passed, go to next step. If scan tool does not indicate that this test ran and passed, repeat step 2.
- Using scan tool, select CAPTURE INFO, REVIEW INFO function. If any undiagnosed DTCs are displayed, go to applicable DTC 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.