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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Control System & Fuel System - 1.8L (Lay) - DTC P0441 To DTC P2A00) >> DTC P2120-P2123, P2125, P2127, P2128, or P1238 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
  1. Ignition ON, observe the scan tool APP sensor 1 parameter. The reading should be between 0.75-0.80 volt.
  2. Ignition ON, observe the scan tool APP sensor 2 parameter. The reading should be between 1.60-1.65 volts.
  3. Observe both scan tool APP sensor parameters while pressing the accelerator pedal from the rest position to the floor. Both APP senor readings should change.
  4. Rapidly depress the accelerator pedal from the rest position to the floor and release the pedal. Repeat the procedure several times. DTCs P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 should not set.
  5. Slowly depress the accelerator pedal to the floor and then slowly return the pedal to the rest position. Repeat the procedure several times. P2120, P2121, P2122, P2123, P2125, P2127, P2128 and P2138 should not set.
  6. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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