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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (Engine Controls And Fuel - 2.0L - DTC P000A To DTC P0238) >> DTC P0087, P0088, or P0089 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Observe the DTC information with a scan tool. DTC P029D, P02A1, P02A5, P02A9, P0627, P0628, or P0629 should not set.
  2. Attempt to start and idle the engine.
  3. Observe the DTC information with a scan tool. DTCs P0087, P0088, and P0089 should not set.
  4. Engine idling, observe the Fuel Rail Pressure Sensor parameter with a scan tool. The pressure should be approximately 3.5-5.5 Mpa (508-798 psi).
  5. Command an increase and decrease in fuel rail pressure with a scan tool. Observe the scan tool Fuel Rail Pressure Sensor parameter. The Fuel Rail Pressure Sensor should increase or decrease with each commanded state.
  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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