P15876
A01740
Engine Stopped
A01741
Engine at 3,000 rpm
--
EMISSION CONTROL
EXHAUST GAS RECIRCULATION (EGR) SYSTEM
(2RZ--FE)
EC--9
12. INSPECT EGR VALVE
Check for sticking and heavy carbon deposits.
If a problem is found, replace the EGR valve.
1 3 . DI S CO NNE CT VACUUM HO S E S FRO M E G R
VACUUM MO DULATO R
14. INSPECT EGR VACUUM MO DULATO R O P E RAT I O N
(a)
Block ports P and R with your finger.
(b)
Blow air into port Q, and check that the air passes through
to the air filter side freely.
(c)
Start the engine, and maintain speed at 3,000 rpm.
(d)
Repeat the above test. Check that there is a strong resis-
tance to air flow.
If operation is not as specified, replace the EGR vacuum modu-
lator.
1 5 . RE CO NNE CT VACUUM HO S E S TO E G R VACUUM
MO DULATO R
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Pages From Supplement
3RZ-F,3RZ-FE