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Home >> Pontiac >> 2009 >> Vibe Base, 2.4 0, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 69 (Engine Control System & Fuel System - 4.6L - DTC P0016 To DTC P0336) >> DTC P0120, P0122, P0123, P0220, P0222, P0223, or P2135 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC P0641 or P0651 are the only DTCs set.
  2. Ignition ON, observe the scan tool TP sensor 1 voltage parameter. The reading should be between 4.75-0.33 volts, and change with the accelerator pedal input.
  3. Ignition ON, observe the scan tool TP sensor 2 voltage parameter. The reading should be between 0.25-4.59 volts, and change with accelerator pedal input.
  4. Ignition ON, observe the scan tool TP sensor 1 and 2 parameter. The scan tool should indicate Agree.
  5. Clear the DTCs with the scan tool.
  6. Operate the vehicle within the Conditions for Running the DTC, or within the conditions that you observed from the Freeze Frame/Failure Records.
  7. Verify that DTC P0120 or P0220 are not set.
    • If DTC P0120 or P0220 are set, replace the ECM.
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