Lexus SC300 / Lexus SC400. Manual - part 488

VSV for EGR (Exc. USA Spec.)

INSPECTION OF VSV FOR EGR

(See Emission Control Systems on page 

EC–18

)

FI–96

                                          –   Electronic Control System (VSV for EGR (Exc. USA Spec.))

EFI SYSTEM

EGR Valve (USA Spec. only)

INSPECTION OF VSV FOR EGR

(See Emission Control Systems on page 

EC–21

)

FI–97

                                    –   Electronic Control System (EGR Valve (USA Spec. Only))

EFI SYSTEM

Water Temperature Sensor

COMPONENTS FOR REMOVAL AND
INSTALLATION

FI–98

                                           –   Electronic Control System (Water Temperature Sensor)

EFI SYSTEM

INSPECTION OF WATER TEMPERATURE
SENSOR

1. 

REMOVE LOWER HIGH–TENSION CORD COVER
(See steps 1, 2 and 5 to 12 on pages 

FI–27

 to 29)

2. 

REMOVE RH IGNITION COIL
(a)  Disconnect the ignition coil connector.
(b)  Remove the two bolts, and disconnect the ignition coil.

(c)  Disconnect the cam position sensor connector from the

ignition coil bracket, and remove the ignition coil.

3. DISCONNECT 

HOSES

Disconnect the following hoses:

(1)  Upper radiator hose from front water by–pass joint
(2)  Lower radiator hose from water inlet
(3)  Radiator reservoir hose from front water inlet hous-

ing

4. 

REMOVE WATER INLET AND INLET HOUSING
(a)  Disconnect the water by–pass hose from the water inlet

housing.

(b)  Remove the two bolts holding the water inlet housing to

the water pump.

(c)  Pull out the water inlet and inlet housing assembly.
(d)  Remove the O–ring from the water inlet housing.

5. REMOVE 

WATER 

TEMPERATURE 

SENSOR

(a)  Disconnect the water temperature sensor connector.
(b)  Remove the water temperature sensor and gasket.

FI–99

EFI SYSTEM   –   Electronic Control System (Water Temperature Sensor)