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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Controls/Fuel - 1.8L - DTC Diagnostics, Troubleshooting & Diagnosis) >> Diagnostic Information and Procedures >> DTC P0627-P0629 (LUW) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different variant/trim than selected.
NOTE:

If you were sent here from engine cranks but does not run proceed to Circuit/System Testing.

  1. Attempt to start the engine. Observe the DTC information with a scan tool. DTC P0627, P0628, or P0629 should not set.
  2. Ignition ON, command the Fuel Pump Enable ON and OFF with a scan tool while observing the following control circuit status parameters. Each parameter should display OK or Not Run.
    • Fuel Pump Enable Circuit Low Voltage Test Status
    • Fuel Pump Enable Circuit Open Test Status
    • Fuel Pump Enable Circuit High Voltage test Status
  3. Ignition ON, view the DTC information with a scan tool. DTC P0627, P0628, or P0629 should not be set.
  4. 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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