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 MANUALSCHEVROLET2002CAVALIER BASE, 4D SEDAN, 2.4 TREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - BASIC DIAGNOSTIC PROCEDURESNO-START DIAGNOSISNO START - ENGINE CRANKS OKAY (1.9L)NO RPM DETECTED DIAGNOSIS
2002 Chevrolet Cavalier Base, 4D Sedan, 2.4 T
No RPM Detected Diagnosis
2002 Chevrolet Cavalier Base, 4D Sedan, 2.4 TSECTION No RPM Detected Diagnosis
- Turn ignition off. Disconnect 80-pin PCM harness connector. Measure resistance between 7X signal high circuit and 7X signal low circuit at PCM harness connector. If resistance is 800-1600 ohms, go to next step. If resistance is less than 800 ohms, go to step 3. If resistance is greater than 1600 ohms, go to step 4.
- Check CKP sensor for correct torque and terminal tension. Repair as necessary. If CKP sensor and connections are okay, replace PCM. Perform PCM relearn procedure.
- Disconnect CKP sensor. Check for continuity between 7X signal high circuit and 7X signal low circuit at CKP sensor harness connector. If continuity is present, repair circuits for short together. If continuity is not present, replace CKP sensor.
- Disconnect CKP sensor. Check for open in 7X signal high circuit or 7X signal low circuit. Repair as necessary. If circuits are okay, CKP sensor or connections is faulty.
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.