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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSPONTIAC2006WAVE BASE, 4D SEDAN, Y4M/MLMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - 1.6L (L91) - DTC P0420 TO DTC P2076DTC P2076, P2077, OR P2078CIRCUIT/SYSTEM VERIFICATION
2006 Pontiac Wave Base, 4D Sedan, Y4M/MLM
Circuit/System Verification
2006 Pontiac Wave Base, 4D Sedan, Y4M/MLMSECTION Circuit/System Verification
- Ignition ON, observe the DTC information with a scan tool. Verify DTC P0651 is not set.
- If DTC P0651 is set, refer to DTC P0641 or P0651.
- Engine idling, command the IMT valve ON with a scan tool and observe the IMT valve vacuum actuator moves to the closed position.
- If the IMT valve vacuum actuator is inoperative, refer to Intake Manifold Tuning (IMT) Valve Diagnosis for further diagnosis.
- Engine idling, observe the DTC information with a scan tool. DTCs P0660, P2076, P2077, and P2078 should not set.
- If DTC P0660 is set, refer to DTC P0660 for further diagnosis.
- If the vehicle passes the Circuit/System Verification test, then operate the vehicle within the conditions for running the DTC. You may also operate the vehicle within the conditions that are captured in the Freeze Frame/Failure Records List.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.