Toyota Land Cruiser 1988 Repair Manual page 128

EMISSION CONTROL SYSTEMS- Air Injection (AI) System EC-19
EC2866
Battery
EC286S
AI Manifold Side
ASV Side
•
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.......
~. ~
EC0110
EC2762
INSPECTION OF VSV
INSPECTVSV
(a) Blow air into pipe E and check that air comes out of
pipe P.
(b) Apply battery voltage across the terminals.
(c) Blow air into pipe E and check that air comes out of
pipe F.
If a problem is found, replace the VSV.
INSPECTION OF CHECK VALVE (A)
CHECK VALVE BY BLOWING AIR FROM EACH SIDE
(a) Check that air does not flow from manifold side to
ASV side.
(b) Check that air flows from ASV side to manifold side .
If a problem is found, replace the valve.
INSPECTION OF CHECK VALVE (B)
CHECK VALVE BY BLOWING AIR FROM EACH SIDE
(a) Check that air flows from the orange pipe to the
black side.
(b) Check that air does not flow from the black pipe to
the orange pipe.
INSPECTION OF SPEED SENSOR
1.
2.
3.
4.
JACK UP ONE REAR WHEEL TO CLEAR GROUND
AND CHOCK FRONT WHEELS
RELEASE PARKING BRAKE
SET SHIFT LEVER INTO NEUTRAL
UNPLUG WIRING CONNECTOR FROM EFI ECU
EFI ECU location: Behind the glove box