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 MANUALSPONTIAC2006WAVE BASE, 4D SEDAN, Y4M/MLMREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - 1.6L (L91) - DTC P0420 TO DTC P2076DTC P1396 OR P1397COMPONENT TESTING
2006 Pontiac Wave Base, 4D Sedan, Y4M/MLM
Component Testing
2006 Pontiac Wave Base, 4D Sedan, Y4M/MLMSECTION Component Testing
IMPORTANT:
This procedure is for vehicle without ABS. If the wheel speed sensor harness is damaged in any way, DO NOT repair the harness.
- Ignition OFF, disconnect the harness connector of the wheel speed sensor.
- Raise and support the drive wheels.
- Engine running, place the transmission into 2nd gear or drive for an automatic.
- Test for 70 mV AC between the rough road signal circuit and low reference of the wheel speed sensor.
- If less than 70 mV AC, replace the wheel speed sensor.
NOTE:
Support the lower control arms in the normal horizontal position in order to avoid damage to the drive axles. Do not operate the vehicle in gear with the wheels hanging down at full travel.
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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.