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HOMESERVICE MANUALSCHEVROLET2006COBALT SS, 4D SEDAN, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 42 (ENGINE CONTROLS - TROUBLESHOOTING & DIAGNOSIS)DIAGNOSTIC PERFORMANCE & PROCEDURESINSPECTION/MAINTENANCE (I/M) COMPLETE SYSTEM SET PROCEDURETEST DESCRIPTION
2006 Chevrolet Cobalt SS, 4D Sedan, Standard

Test Description

2006 Chevrolet Cobalt SS, 4D Sedan, StandardSECTION Test Description
WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers on the diagnostic table.

  1. 2:  This step is to run the HO2S Heater Tests and initiate the EVAP System Test.
  2. 3:  This step is to run the EVAP, AIR and the Oxygen Sensor Tests. The EVAP Test begins once the engine coolant reaches a calibrated temperature. The AIR Test, if equipped, begins shortly after Closed Loop and the indicated speed is achieved. The Oxygen Sensor Tests begin once the engine is at operating temperature, in Closed Loop Fuel Control, and a calibrated amount of time has elapsed.
  3. 4:  This step is to run the EGR Tests. The EGR Tests are run during a gradual deceleration with a closed throttle. The vehicle speed is required in order to maintain a high, steady MAP signal.
  4. 5:  This step is to run the Catalyst Tests. This test runs during the idle period immediately following a cruise period that meets a minimum calibrated RPM and time period.
  5. 7:  The I/M System Status only reports on whether or not a diagnostic has run, not what the outcome of the test was. If any emission related DTC sets after the tests are complete, the DTC will require diagnosis.
Inspection/Maintenance (I/M) Complete System Set Procedure

Step Action Value(s) Yes No
1 Did you perform the Inspection/Maintenance (I/M) System Check? - Go to Step 2  Go to Inspection/Maintenance (I/M) System Check 
2 
  1. Ensure the vehicle is within the Conditions for Running specified in the supporting text.
  2. Turn OFF all of the accessories, e.g., A/C, blower fan, etc.
  3. Set the vehicle parking brake.
  4. Verify the transmission is in PARK for automatic transmissions and NEUTRAL for manual transmissions.
  5. Start the engine and allow it to idle for the specified time.
Is the action complete?		 2 minutes Go to Step 3  -
3 
CAUTION: Refer to Road Test Caution in Cautions and Notices.
RENDER: 1.0x

NO RELATED

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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.