Lexus SC300 / Lexus SC400. Manual - part 490
5. REMOVE EGR GAS TEMPERATURE SENSOR FROM
EGR VALVE ADAPTOR
(a) Mount the EGR valve adaptor in a vise.
(b) Remove the EGR valve adaptor.
(c) Remove
the
connector bracket from the sensor
connector.
6.
INSPECT EGR GAS TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance:
69–89 k
at 50
°
C (112
°
F)
12–15 k
at 100
°
C (212
°
F)
2–4 k
at 150
°
C (302
°
F)
If the resistance is not as specified, replace the sensor.
7.
REINSTALL EGR GAS TEMPERATURE SENSOR TO EGR
VALVE ADAPTOR
(a) Mount the EGR valve adaptor in a vise.
(b) Install the EGR gas temperature to the adaptor.
Torque: 20 N
⋅
m (200 kgf
⋅
cm, 14 ft
⋅
lbf)
(c) Install the connector bracket to the sensor connector.
8.
REINSTALL EGR VALVE ADAPTOR
(a) Install a new gasket, the adaptor and connector bracket
with the two bolts, two nuts, EGR valve adaptor and
gasket.
Torque: 18 N
⋅
m (185 kgf
⋅
cm, 13 ft
⋅
lbf)
NOTICE: Do not touch the air intake chamber and adap-
tor surfaces of the gasket with your hand.
(b) Connect the PCV hose to the EGR valve adaptor.
(c) Connect the EGR gas temperature sensor.
FI–104
EFI SYSTEM – Electronic Control System (EGR Gas Temperature Sensor (USA Spec. only))