Fuel & Emissions


Emission Control System
System Troubleshooting Guide
NOTE: Across each row in the chart, the sub-systems that could be sources of a symptom are ranked in the order they
should be inspected starting with . Find the symptom in the left column, read across to the most likely source, then
refer to the page listed at the top of that column. If inspection shows the system is OK, try the next most likely system
, etc.
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