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Home >> Cadillac >> 2008 >> STS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.4L - DTC P0010 To DTC P0158 >> DTC P0069 >> Circuit/System Verification
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Circuit/System Verification

  1. Verify that DTCs P0106, P0107, P0108, P012B, P012C, P012D, P0641, P0651, or P2227, P2228, P2229 are not set.
    2. IMPORTANT:
    • The harness connectors for the following sensors are the same configuration but are not interchangeable.
    • Review the engine controls schematics for the BARO sensor and for the SCIAP sensor and note the circuit colors.
    • Inspect the wiring harness of the BARO sensor for the proper connections.
    • Inspect the wiring harness of the SCIAP sensor for the proper connections.
  2. Ignition ON, engine OFF, determine the altitude for your area. Refer to Altitude Versus Barometric Pressure . Observe the SC Inlet Pressure Sensor and BARO Sensor parameters. The readings should be within 5 kPa of each other.
  3. Ignition ON, observe the scan tool SC Inlet Pressure Sensor kPa parameter. Start the engine. The SC Inlet Pressure Sensor parameter should decrease.
  4. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame Records data.
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