1A-354 Engine Control System (4HK1)
Exhaust System Checks Inspect the exhaust system for a possible restriction. Refer to Exhaust System
in Section 1G Engine Exhaust.
Additional Checks • Electromagnetic interference (EMI) on the reference circuit can cause an
engine miss condition. The scan tool can usually detect EMI by monitoring
the engine speed. A sudden increase in speed with little change in actual
engine speed change indicates that EMI is present. If a problem exists,
check routing of high voltage components, such as fuel injector solenoid
valve wiring, near the sensor circuits.
Checks Action
LG4HKED-WE-0871.book 354 ページ ２００７年１１月２９日 木曜日 午後６時２９分
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