MANUALS · EMISSION CONTROL [17] · страница 43 из 46 · Открыть оригинал PDF ↗

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EXHAUST GAS RECIRCULATION (EGR) SYSTEM
<4M4O Engine>

System Inspection

DEMO603

FUNCTION INSPECTION
(1)Starttheengine andletitwarmupuntilthe engine
coolant temperature is 65*C (149PF} or above_

(2) Whenthe engineis raced by suddenly depressing the
accelerator pedal, check to be sure that the diaphragm of check to be sure that the diaphragm of
the EGR valve lifts_

EGRSOLENOIDVALVENO:I/NOOPERATIONIN- SPECTION (1)Remove the EGR solenoidvalveNo.I/No.2connectors and vacuum hoses.

(2) AttachvacuumpumptoeachnippleoftheEGR
solenoidvalveNo:I/No.and applyvacuumCheck
that the valves are airtight both when voltage is applied
to each terminal of the EGR solenoid valves and when it
is notapplied.

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