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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1693 (Engine Controls And Fuel - 3.6L (LCS) - DTC P0008 To DTC P0193) >> DTC P0121, P0122, P0123, P0221, P0222, or P0223 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition ON, observe the DTC information with a scan tool. DTC P0697, P0698, or P0699 should not be set.
  2. Clear the DTC Info with a scan tool.
  3. Engine idling, observe the scan tool TP Sensor 1 voltage parameter. The display should be between 3.6-4.6 V.
  4. Observe the scan tool TP Sensor 2 voltage parameter. The display should be between 0.5-1.5 V.
  5. Observe the scan tool TP sensor 1 and 2 Agree parameters while performing the following tests:
    • Rapidly depress the accelerator pedal from the rest position to the wide open throttle position (WOT) and release pedal. Repeat the procedure several times.
    • Slowly depress the accelerator pedal to WOT and then slowly return the pedal to closed throttle. Repeat the procedure several times.

      The TP sensor 1 and 2 parameter should display Agree.

  6. Observe the DTC Information with a scan tool. DTCs P0121, P0122, P0123, P0221, P0222, and P0223 should not set.
  7. 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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