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 MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 12 (ENGINE CONTROL SYSTEM - 2.4L - DTC P0010 TO DTC P0341)DTC P0201-P0204CIRCUIT/SYSTEM TESTING
2006 Pontiac G6 GTP, 2D Coupe, Standard
Circuit/System Testing
2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Circuit/System Testing
WARNING: This page is about a different variant/trim than selected.
- Remove the air cleaner outlet resonator. Refer to Air Cleaner Outlet Resonator Replacement .
- Disconnect the fuel injector.
- With the ignition ON, engine OFF, probe the ignition 1 voltage circuit of the fuel injector with a test lamp that is connected to a good ground. The test lamp should illuminate.
- If the test lamp does not illuminate, repair the open or the high resistance in the ignition 1 voltage circuit.
- Connect the J 44603
into the fuel injector connector. See Special Tools
. Start the engine.
- If the test lamp flashes, test for an intermittent or a poor connection at the fuel injector or a faulty fuel injector.
- If the test lamp does not flash, test for an open, high resistance or a short to voltage in the control circuit of the fuel injector, an intermittent or poor connection at the engine control module (ECM) or a faulty ECM.
- If the test lamp remains illuminated at all times, test for a short to ground in the control circuit of the fuel injector or a faulty ECM.
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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.