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 SYSTEMSTESTING AND INSPECTIONINITIAL INSPECTION AND DIAGNOSTIC OVERVIEWVEHICLE ON-BOARD & SCAN TOOL DIAGNOSTICSUSING OUTPUT CONTROLS WITH A SCAN TOOL
2001 Chevrolet Metro L4-079 1.3L VIN 2 MFI
Using Output Controls With A Scan Tool
2001 Chevrolet Metro L4-079 1.3L VIN 2 MFISECTION Using Output Controls With A Scan Tool
IMPORTANT: Do not use the scan tool Output Controls until the vehicle is at normal operating temperatures. The PCM will not respond to a request for Output Controls until the engine coolant temperature is above 80°C (175°F). Failure to wait for normal operating temperatures can result in the incorrect diagnosis of a driveability problem.
The Output Controls are disabled if the PCM stores any DTCs. Clear the DTCs before using the scan tool Output Controls.
The Tech 2 can command the PCM to operate solenoids, valves, motors, and switches. This scan tool function is referred to as the "Output Controls". The Output Controls item is in the Special Functions menu on the Tech 2 scan tool. Limit the operation of a PCM controlled device with the scan tool to a maximum of 10 seconds per test period.
The Output Controls are disabled if the PCM stores any DTCs. Clear the DTCs before using the scan tool Output Controls.
The Tech 2 can command the PCM to operate solenoids, valves, motors, and switches. This scan tool function is referred to as the "Output Controls". The Output Controls item is in the Special Functions menu on the Tech 2 scan tool. Limit the operation of a PCM controlled device with the scan tool to a maximum of 10 seconds per test period.
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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.