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Home >> Cadillac >> 2006 >> STS V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - 4.4L - DTC P0010 To P0175 >> DTC P0101 >> Circuit/System Verification
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Circuit/System Verification

IMPORTANT: If you cannot duplicate the condition, 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/Failure Records.
  1. Verify the integrity of the air induction system by inspecting for the following conditions:
    • A bypass valve that is binding or incorrectly adjusted
    • A restricted or collapsed air intake duct
    • A misaligned or damaged air intake duct
    • A dirty or deteriorating air filter element
    • Any objects blocking the air inlet probe of the MAF/IAT sensor
    • Any contamination or debris on the sensing elements in the probe of the MAF/IAT sensor
    • Any water intrusion in the induction system
    • Any vacuum leak downstream of the MAF/IAT sensor
    • An intake manifold leak
    • A SCIP sensor vacuum hose that is missing or damaged
    • A MAP sensor vacuum hose that is missing or damaged
    • A BARO sensor that is skewed or stuck
    • A skewed or stuck ECT or IAT sensor-Refer to Temperature Versus Resistance .
    • Any type of restriction in the exhaust system-Refer to Restricted Exhaust .
  2. Ignition ON, observe the MAP and SC Inlet Pressure Sensor kPa parameters with a scan tool. Start the engine. The MAP and SC Inlet Pressure Sensor kPa parameters should decrease.
    • If the MAP Sensor kPa parameter does not decrease, refer to DTC P0106 .
    • If the SC Inlet Pressure kPa parameter does not decrease, refer to DTC P1182 .
  3. Ignition ON, depress the accelerator pedal completely and observe the TP Indicated Angle parameter with a scan tool. The TP Indicated Angle parameter should read 98-100 percent.
  4. With the ignition ON and the engine OFF, perform a snapshot of the throttle actuator control (TAC) data while performing the following action. Refer to Scan Tool Snapshot Procedure .
    1. Slowly depress the accelerator pedal to WOT position and then slowly release the pedal. Exit from the snapshot and review the data.
    2. Compare the TP Sensor 1 and the TP Sensor 2 parameters, frame by frame. The difference between the parameters should be less than 4 percent.
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