Check component status
(a) Compare the test value with the minimum test limit (MIN LIMIT) and maximum test limit (MAX LIMIT).
(b) If the test value is between the minimum test limit and maximum test limit, the component is functioning normally. If not, the component is malfunctioning. The test value is usually significantly higher or lower than the test limit. If the test value is on the borderline of the test limit, the component will malfunction in the near future.
HINT:
The monitor result might be PASS on rare occasions even if the Malfunction Indicator Lamp (MIL) is illuminated. This indicates that the system was malfunctioning in the previous driving cycle. This might be caused by an intermittent problem.
Test yourself
A quick Toyota Sienna quiz: every answer comes with an explanation and a link to the manual page.