Lexus SC300 / Lexus SC400. Manual — part 352
(e) Connect the following connectors:
(1) Throttle position sensor connector
(2) w/
TRAC:
Sub–throttle position sensor connector
(3) w/
TRAC:
Sub–throttle actuator connector
27. REINSTALL
HEATER
WATER
VALVE
(a) Install the water valve and bracket assembly with the 2 bolts.
(b) Install the engine wire clamp with the bolt.
(c) Connect the VSV connector.
28. REINSTALL RH NO.3 TIMING BELT COVER
(a) Install the 3 gaskets to the timing belt cover.
(b) Fit the portion A of the timing belt cover, matching it with the
lower high–tension cord cover.
(c) Install the timing belt cover with the 3 bolts.
29. REINSTALL VSV FOR EVAP SYSTEM
Install the VSV with the 2 bolts.
30. REINSTALL LH NO.3 TIMING BELT COVER
(a) Install the 3 gaskets to the timing belt cover.
(b) Install the cord grommet to the high–tension cord (from the
LH ignition coil).
(c) Install the cord grommet to the timing belt cover.
(d) Fit the portion A of the timing belt cover, matching it with the
lower high–tension cord cover.
(e) Install the timing belt cover with the 4 bolts.
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1UZ–FE ENGINE
ENGINE MECHANICAL
EG–29
31. RECONNECT FUEL INLET HOSE TO LH DELIVERY PIPE
(a) Temporarily connect the fuel inlet hose to the delivery pipe
with 2 new gaskets and pulsation damper.
(b) Using SST, tighten the pulsation damper.
SST 09631–22020
Torque:
39 N
⋅
m (400 kgf
⋅
cm, 29 ft
⋅
lbf)
33 N
⋅
m (340 kgf
⋅
cm, 24 ft
⋅
lbf) for SST
HINT: Use a torque wrench with a fulcrum length of 30 cm
(11.81 in.).
32. RECONNECT FUEL RETURN HOSE TO FUEL RETURN
PIPE
33. RECONNECT PCV HOSE TO LH CYLINDER HEAD
34. REINSTALL RH ENGINE WIRE COVER
(a) Fit portions A and B of the engine wire cover, matching them
with the lower high–tension cord cover and No.3 timing belt
cover.
(b) Install the timing belt cover with the bolt.
35. REINSTALL LH ENGINE WIRE COVER
(a) Connect
portions A and B of the engine wire cover to the wire
brackets.
(b) Set the VSV (for the fuel pressure) wire in original position.
(c) Fit portions C and D of the engine wire cover, matching them
with the lower high–tension cord cover and No.3 timing belt
cover.
(d) Install the timing belt cover with the 2 bolts.
36. REINSTALL UPPER HIGH–TENSION CORD COVER
(a) Fit portion A of the upper high–tension cord cover matching
the top of the lower high–tension cord cover.
EG–30
–
1UZ–FE ENGINE
ENGINE MECHANICAL
(b) Push the front side of the upper high–tension cord cover, and
fit the front side claw groove of the upper high–tension cord
cover to the claw of the lower high –tension cord cover.
(c) Install the upper high–tension cord cover with the 2 bolts.
37. REINSTALL INTAKE AIR CONNECTOR
(a) Connect the end portions of the intake air connector to the
throttle body and air cleaner hose.
(b) Tighten the 2 hose clamps
(c) Install the bolt holding the intake air connector to the cylinder
head cover.
(d) Connect the following hoses:
(1) Air hose to IAC valve
(2) Air
hose (from air control valve on PS pump) to intake air
connector
38. RECONNECT CONTROL CABLES TO THROTTLE BODY
Connect the following cables:
(1) Accelerator
cable
(2) Transmission throttle control cable
(3) Cruise control actuator cable
39. REINSTALL THROTTLE BODY COVER
(a) Install the throttle body cover and hose clamp with the cap nut
and 2 bolts.
(b) Install the EVAP hose to the hose clamp.
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1UZ–FE ENGINE
ENGINE MECHANICAL
EG–31
40. RECONNECT NEGATIVE TERMINAL CABLE TO
BATTERY
41. REFILL WITH ENGINE COOLANT
42. START ENGINE AND CHECK FOR LEAKS
EG21T–02
IGNITION TIMING INSPECTION
1.
REMOVE UPPER HIGH–TENSION CORD COVER
(a) Remove the 2 bolts.
(b) Disconnect
the front side claw groove of the upper cord cover
from the claw of lower cord cover, and remove the upper cord
cover.
2.
WARM UP ENGINE
Allow the engine to warm up to normal operating tempera-
ture.
3. CONNECT
TACHOMETER
AND
TIMING
LIGHT
TO
ENGINE
Connect the tester probe of a tachometer to terminal IG
of
the DLC1.
HINT: Set the tachometer to the 4–cylinder range.
NOTICE:
•
Never allow the tachometer terminal to touch ground as
it could result in damage to the igniter and/or ignition
coil.
•
As some tachometers are not compatible with this
ignition system, we recommend that you confirm the
compatibility of your unit before use.
4.
INSPECT IGNITION TIMING
(a) Using SST, connect terminals TE1 and E1 of the DLC 1.
SST 09843–18020
EG–32
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1UZ–FE ENGINE
ENGINE MECHANICAL
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