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Home >> Chevrolet >> 2017 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 97 (Engine Controls And Fuel - 1.6L (LWC) - DTC P0010 To DTC P0238) >> Diagnostic Information and Procedures >> DTC P00C7 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON.
  2. Verify that DTCs P0106, P0107, P0236, P0237, P0238, P2227, P2228, P2229 or P2230 are not set.
    • Go to next step: If none of the DTCs is set 
  3. Verify none of the following conditions exist:
    • The air intake duct system for loose connecting clamps, cracks, or other damage
    • A damaged Q38 Throttle Body blade or shaft
    • Splits, kinks, or improper connections at the vacuum hoses
    • Faulty positive crankcase ventilation system operation
    • Carbon deposits on the throttle blade.
    • Vacuum leaks at the intake manifold, Q38 Throttle Body, Q17 Fuel Injector O-rings, and B65 Intake Manifold Pressure and Air Temperature Sensor.
    • If a condition exist 

      Repair as necessary.

    • Go to next step: If none of the conditions exist 
  4. Ignition ON.
  5. Verify the following scan tool parameters are within range of the Altitude vs. Barometric Pressure table. Refer to: Altitude Versus Barometric Pressure table.
    • BARO Sensor
    • MAP Sensor
    • Turbocharger Boost Sensor
    • If a sensor parameter is not within range 

      Refer to the appropriate diagnostic below for further diagnosis.

    • Barometric Pressure (BARO) Sensor. Refer to: DTC P2227-P2230
    • Manifold Absolute Pressure (MAP) Sensor. Refer to: DTC P0106 
    • Turbocharger Boost Pressure Sensor. Refer to: DTC P0236 
    • Go to next step: If all sensor parameters are within range 
  6. All OK
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