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 P0335CIRCUIT/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.
- With the ignition OFF, disconnect the harness connector at the CKP sensor.
- With the ignition ON, measure for 4.8-5.2 volts, between the 5-volt reference circuit of the CKP sensor and ground.
- If the voltage is less than 4.8 volts, test for a short to ground, open/high resistance at the circuit or faulty ECM.
- With the ignition ON, measure for 4.8-5.2 volts between the 5-volt reference circuit of the CKP sensor and the low reference circuit of the CKP sensor.
- If the voltage is less than 4.8 volts, test for an open/high resistance at the circuit or a faulty ECM.
- With the ignition ON, momentarily connect a test lamp between the CKP sensor signal circuit and the 5-volt reference circuit of the CKP sensor. The fuel pump should operate when the test lamp is applied to the CKP sensor signal circuit.
- If the fuel pump does not operate when the test lamp is applied to the CKP sensor signal circuit, test for a short to ground, open/high resistance, short to voltage at the circuit or a faulty ECM.
- Remove the CKP sensor.
- Inspect the CKP sensor for the following conditions:
- Physical damage
- Excessive play or looseness
- Improper installation
- Foreign material passing between the CKP sensor and the reluctor wheel
- Electromagnetic interference in the CKP sensor circuits
- Inspect the CKP reluctor wheel for the following conditions:
- Physical damage
- Excessive end play or looseness
- Improper installation
- If all circuits and components test normal, replace the CKP sensor.
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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.