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 341 (KEYLESS ENTRY SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC B3105CIRCUIT/SYSTEM TESTING
2006 Chevrolet Cobalt SS, 4D Sedan, Standard
Circuit/System Testing
2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Circuit/System 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.
- Verify that the transmitter being used is a correct transmitter for the vehicle. ? If not the correct transmitter, replace the transmitter.
- Place the transmitter on the test pad of the J 43241 and press each button of the transmitter one at a time. The tester should sound a tone and illuminate a green light when each button is pressed. ? If any of the buttons do not sound the tone and illuminate the green light, replace the transmitter battery. Retest with the J 43241 . If the transmitter continues to malfunction, replace the affected transmitter.
- Verify the scan tool Fob Programmed parameter for the transmitter being used is Yes. ? If not the specified value, program the applicable transmitter.
- Press each transmitter button. Verify the scan tool Fob Function parameter for the transmitter being used responds to each button press. ? If the parameter does not respond, test the keyless entry antenna for an open/high resistance. If all circuits test normal, replace the RCDLR.
- If all circuits test normal, test or replace the RCDLR.
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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.