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 859 (ENGINE CONTROLS AND FUEL - 2.2L - DTC P0351 TO DTC P2544)DTC P0412 OR P0418COMPONENT 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 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the appropriate relay.
- Test for the following resistance between terminals 85 and 86.
- 50-75 Ξ©-Secondary Air Injection Pump Relay
- 70-11 Ξ©-Secondary Air Injection Solenoid Relay
- If the resistance is not within the specified range, replace the relay.
- Test for infinite resistance between the following terminals:
- 86 and 87
- 86 and 30
- 85 and 87
- 87 and 30
- If not the specified value, replace the relay.
- Install a 15 A fused jumper wire between relay terminal 86 and B+. Install a jumper wire between relay terminal 85 and ground. Test for less than 2 Ξ© between terminals 87 and 30.
- If greater than the specified range, replace the relay.
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.