RX 400h AWD V6-3.3L (3MZ-FE) Hybrid (2007)
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Air/Fuel Mixture: Testing and Inspection
INSPECT CO/HC
a. Set the vehicle to inspection mode
b. Start the engine.
c. Run the engine at 2,500 rpm for approximately 180 seconds.
d. Insert the CO/HC meter testing probe at least 40 cm (1.3 ft) into the tailpipe during idling.
e. Check CO/HC concentration at idle and/or 2,500 rpm.
HINT: When doing the 2 mode (with the engine is in the idle and 2,500 rpm) test, the measuring procedures are prescribed by the applicable
local regulations. If the CO/HC concentration does not comply with regulations, troubleshoot in the order given.
(1) Check heated oxygen sensor operation.
(2) Check heated air fuel ratio sensor operation.
(3) See the table for possible causes, and then inspect and repair the applicable causes if necessary.
