Lexus RX300 (MCU15). Service manual — part 423
FI0VY–01
S04759
ECT Switch
Gasket
19 mm
Deep Socket
Wrench
S04982
Ohmmeter
Acceptable
RESIST
ANCE
k
Ω
TEMPERATURE °C (°F)
–
ELECTRONIC FUEL INJECTION
WATER TEMPERATURE SENSOR
FI–63
LEXUS RX300 (RM785E)
WATER TEMPERATURE SENSOR
INSPECTION
1.
DRAIN ENGINE COOLANT
2.
REMOVE WATER TEMPERATURE SENSOR
(a)
Disconnect the water temperature sensor connector.
(b)
Using a 19 mm deep socket wrench, remove the water
temperature sensor and gasket.
3.
INSPECT WATER TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: Refer to the graph
If the resistance is not as specified, replace the water tempera-
ture sensor.
4.
REINSTALL WATER TEMPERATURE SENSOR
(a)
Install a new gasket to the water temperature sensor.
(b)
Using a 19 mm deep socket, install the water temperature
sensor.
Torque: 20 N·m (200 kgf·cm, 14 ft·lbf)
(c)
Connect the water temperature sensor connector.
5.
REFILL WITH ENGINE COOLANT
FI0VZ–01
B13138
N·m (kgf·cm, ft·lbf)
: Specified torque
LH Wiper Arm and Blade Assembly
Hood to Cowl Top Seal
Wiper Motor with Wiper Link
Outer Cowl Top Panel
x 6
Wiper Motor Connector
24 (245, 18)
RH Cowl Top
Ventilator Louver
LH Cowl Top Ventilator Louver
RH Wiper Arm and Blade Assembly
FI–64
–
ELECTRONIC FUEL INJECTION
KNOCK SENSOR
LEXUS RX300 (RM785E)
KNOCK SENSOR
COMPONENTS
B12954
19.5 (200, 14)
39 (400, 19)
PS Pressure
Tube
Brake Booster
Vacuum Hose
No. 1 Engine
Hanger
VSV Connector
for EVAP
Ground Cable
43 (440, 32)
Ground Cable
Ground Strap
PCV Hose
Air Intake Chamber
Assembly
z
Gasket
No. 1 VSV Connector for ASIC
Water Temperature
Sensor Connector
Ground Strap
Connector
15 (150, 11)
z
Gasket
Water Outlet
z
Gasket
Upper Radiator
Hose
15 (150, 11)
Water Bypass
Hose
x 9
N·m (kgf·cm, ft·lbf) : Specified torque
Air Intake Chamber Stay
Throttle Position
Sensor Connector
IAC Valve
Connector
V–Bank Cover Fastener
V–Vank Cover
Accelerator Cable
Cruise Control Cable
Water Bypass Hose
Vacuum Hose
Purge Hose
Fuel Hose Clamp
Heater Hose
Intake Manifold
Assembly
Injector Connector
z
Non–reusable part
Knock Sensor
Connector
Knock Sensor
39 (400, 29)
–
ELECTRONIC FUEL INJECTION
KNOCK SENSOR
FI–65
LEXUS RX300 (RM785E)
FI0W0–01
P20115
SST
Knock Sensor 1
Knock Sensor 2
P01630
Ohmmeter
FI–66
–
ELECTRONIC FUEL INJECTION
KNOCK SENSOR
LEXUS RX300 (RM785E)
INSPECTION
1.
REMOVE AIR CLEANER HOSE
2.
REMOVE RH ENGINE MOUNTING STAY
3.
REMOVE INTAKE MANIFOLD ASSEMBLY AND
WATER OUTLET (See page EM–33)
4.
REMOVE KNOCK SENSORS
(a)
Disconnect the knock sensor connector.
(b)
Using SST, remove the knock sensor.
SST
09817–16011
5.
INSPECT KNOCK SENSORS
Using an ohmmeter, check that there is no continuity between
the terminal and body.
If there is continuity, replace the sensor.
6.
REINSTALL KNOCK SENSORS
(a)
Using SST, install the knock sensor.
SST
09817–16011
Torque: 39 N·m (400 kgf·cm, 29 ft·lbf)
(b)
Connect the knock sensor connector.
7.
REINSTALL WATER OUTLET AND INTAKE
MANIFOLD ASSEMBLY (See page EM–60)
8.
REINSTALL RH ENGINE MOUNTING STAY
9.
REINSTALL AIR CLEANER HOSE
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