A01737
3--Way
Plug
Low Vacuum
Port Q
A01738
To Intake
Manifold
Disconnect
Z15471
A
A
B
B
A01739
(2)
(3)
(4)
(1)
EC--8
--
EMISSION CONTROL
EXHAUST GAS RECIRCULATION (EGR) SYSTEM
(2RZ--FE)
(b)
If you have no hand--held tester, check these procedures:
(1)
Remove the 3--way connector with the vacuum
hose.
(2)
Connect the vacuum hose (from port Q of EGR vac-
uum modulator) to the EGR valve.
(3)
Plug the vacuum hose (from VSV for EGR).
(c)
Check that the vacuum gauge indicates low vacuum at
3,000 rpm.
7 . DI S CO NNE CT HAND -- HE LD TE S T E R.
8 . RE MO V E VACUUM G AUG E
Remove the vacuum gauge, and reconnect the vacuum hoses
to the proper locations.
9. INSPECT EGR VALVE
(a)
Apply vacuum directly to the EGR valve with the engine
idling.
(b)
Check that the engine runs rough or dies.
(c)
Reconnect the vacuum hoses to the proper locations.
IF NO PROBLE M IS FOUND WITH THIS
INSPECTION, SYSTEM IS NORMAL; OTHERWISE INSPECT
E ACH PART
10. REMOVE EGR PIPE
Remove the bolt, 4 nuts, EGR pipe and 2 gaskets.
HINT:
At the time of assembly, please refer to the following items.
Install the EGR pipe with a 2 new gaskets.
Torque:
Bolt: 18 N.m (185 kgf
∙
cm, 13 ft
∙
lbf)
Nut A: 19 N.m (195 kgf
∙
cm, 14 ft
∙
lbf)
Nut B: 20 N.m (200 kgf
∙
cm, 15 ft
∙
lbf)
11 . REMOVE EGR VALVE
(a)
Disconnect these hoses:
(1)
Vacuum hose
(2)
EGR hose
(3)
Water bypass hose (from ISC valve)
(4)
Water bypass hose (from water bypass pipe)
(b)
Remove the 2 nuts, EGR valve and gasket.
Torque: 19 N.m (195 kgf
∙
cm, 14 ft
∙
lbf)
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3RZ-F,3RZ-FE
