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 MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 324 (COMPUTER/INTEGRATING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B1440COMPONENT TESTING
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Component Testing
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Component Testing
WARNING: This page is about a different car, the 2006 Chevrolet Monte Carlo and 2006 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
- With the key out of ignition and then with the key in the ACC position, measure for infinite resistance between the battery positive voltage and the off/run/crank voltage terminals of the ignition switch. Repeat the same measurement between ignition key resistor signal and off/run/crank voltage terminals of the ignition switch.
- If less than infinite ohms, replace the ignition switch.
- With the key in ignition, in OFF position, measure for 0 ohms between the battery positive voltage and the off/run/crank voltage terminals at the ignition switch.
- If over 0 ohms, replace the ignition switch.
- With the key in the RUN position, measure for 0 ohms between the ignition key resistor signal and the off/run/crank voltage terminals at the ignition switch.
- If over 0 ohms, replace the ignition switch.
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.