Inspection Of Check Valve; Check For Open Circuit - Toyota MR2 1988 Repair Manual

EMISSION CONTROL SYSTEMS - Exhaust Gas Recirculation (EGR) System (4A-GE) EC-15
Ohmmeter
',1=41
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EC149Q
3. CHECK FOR OPEN CIRCUIT
Using an ohmmeter, measure the resistance between the
terminals as shown.
Specified resistance: 33- 39 0 at 20°C (68"F)
If resistance is not within specification, replace the VSV.
INSPECTION OF CHECK VALVE
CHECK VALVE BY BLOWING AIR INTO EACH PIPE
{a) Check that air flows from the orange pipe to the
black pipe.
{b) Check that air does not flow from the black pipe to
the orange pipe.
If a problem is found, replace the check valve.