Matrix XRS 2WD L4-1.8L (2ZZ-GE) (2003)
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Air/Fuel Mixture: Testing and Inspection
INSPECT CO/HC
a. Start engine.
b. Race engine at 2,500 rpm for approximately 180 seconds.
c. Insert CO/HC meter testing probe at least 40 cm (1.3 ft.) into 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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When doing the 2 mode (idle and 2,500 rpm) test, these measuring orders are prescribed by the applicable local regulations.
e. If the CO/HC concentration does not comply with regulations, troubleshoot in the order given in image.
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Check heated oxygen sensor operation.
