Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001METRO L4-079 1.3L VIN 2 MFIREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDESCRIPTION AND OPERATIONCOMMON OBD II SYSTEMSENABLE CRITERIA
2001 Chevrolet Metro L4-079 1.3L VIN 2 MFI
Enable Criteria
2001 Chevrolet Metro L4-079 1.3L VIN 2 MFISECTION Enable Criteria
The term enable criteria is engineering language for the conditions necessary for a given diagnostic test to run. Each diagnostic has a specific list of conditions which must be met before the diagnostic will run. Enable criteria is another way of saying conditions required.
The enable criteria for each diagnostic is listed on the first page of the DTC description under the heading Conditions for Setting the DTC. The enable criteria varies with each diagnostic, and typically includes, but is not limited to the following items:
^ Engine Speed (RPM)
^ Vehicle Speed (VSS)
^ Engine Coolant Temperature (ECT)
^ Manifold Absolute Pressure (MAP)
^ Barometric Pressure (BARO)
^ Intake Air Temperature (IAT)
^ Throttle Position (TP)
^ High Canister Purge
^ Fuel-trim
^ Torque Converter Clutch (TCC) status
The enable criteria for each diagnostic is listed on the first page of the DTC description under the heading Conditions for Setting the DTC. The enable criteria varies with each diagnostic, and typically includes, but is not limited to the following items:
^ Engine Speed (RPM)
^ Vehicle Speed (VSS)
^ Engine Coolant Temperature (ECT)
^ Manifold Absolute Pressure (MAP)
^ Barometric Pressure (BARO)
^ Intake Air Temperature (IAT)
^ Throttle Position (TP)
^ High Canister Purge
^ Fuel-trim
^ Torque Converter Clutch (TCC) status
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.