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HOMESERVICE MANUALSPONTIAC2007TORRENT AWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS AND FUEL - 3.4L - DTC P0016 TO DTC P0408DTC P0340 OR P0341CIRCUIT/SYSTEM VERIFICATION
2007 Pontiac Torrent AWD

Circuit/System Verification

2007 Pontiac Torrent AWDSECTION Circuit/System Verification
  1. With the engine running, observe the CMP Sensor parameter using the scan tool. The CMP Sensor speed should match the Engine Speed parameter within 100 RPM.
    • If the CMP Sensor speed is 0, continue with Circuit/System Testing.
  2. With the ignition ON and the engine OFF, use the Live Plot function on the scan tool. Select the Engine Speed parameter and the CMP Sensor parameter. Change the minimum spec to 0 RPM for both parameters. Change the maximum spec to 1,500 RPM for both parameters.
  3. Observe the scan tool and start the engine. The graphed lines should stay together.
  4. With the engine running, use the Live Plot function on the scan tool. Select the Engine Speed parameter and the CMP Sensor parameter. Change the minimum spec to 400 RPM for both parameters. Change the maximum spec to 3,000 RPM for both parameters.
  5. Observe the scan tool and operate the vehicle under 3,000 RPM within the Conditions for Running the DTC. The graphed lines should stay together.
  6. With the engine running, use the Live Plot function on the scan tool. Select the Engine Speed parameter and the CMP Sensor parameter. Change the minimum spec to 3,000 RPM for both parameters. Change the maximum spec to 5,500 RPM for both parameters.
  7. Observe the scan tool and operate the vehicle, between 3,000-5,500 RPM, within the Conditions for Running the DTC. The graphed lines should stay together.
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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.