Solara L4-2.4L (2AZ-FE) (2006)
Air/Fuel Mixture: Testing and Inspection
INSPECT CO/HC
a. Start the engine.
b. Rev the engine at 2,500 rpm for approximately 180 seconds.
c. Insert CO/HC meter testing probe at least 40 cm (1.3 ft.) into the tailpipe during idling.
d. Immediately check CO/HC concentration at idle and/or 2,500 rpm.
HINT:
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Complete the measuring within 3 minutes.
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Check regulations and restrictions in your area when performing 2 mode CO/HC concentration testing (engine check at both idle speed and at
2,500 rpm).
e. If the CO/HC concentration does not comply with regulations, troubleshoot in the order given below.
1
Check A/F sensor and heated oxygen sensor operation.
2
See the table for possible causes, and then inspect and repair.