o2 sensor TOYOTA AVENSIS 2003 Service Workshop Manual

A56277
NE±NE+
A57060
NE±
NE+
B16200
10±58
±
ENGINE CONTROL SYSTEM ECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
6. INSPECT CRANKSHAFT POSITION SENSOR
(a) Resistance inspection. (1) Using an ohmmeter, measure the resistance be-
tween terminals.
Resistance:
at cold 1630 to 2740

at hot 2065 to 3225

NOTICE:
ºColdº and ºHotº in the following sentences express the
temperature of the sensor itself. ºColdº is from ±10
C
(14
F) to 50
C (122
F) and ºHotº is from 50
C (122
F) to
100
C (212
F).
7. INSPECT CAMSHAFT POSITION SENSOR
(a) Resistance inspection. (1) Using an ohmmeter, measure the resistance be-tween terminal.
Resistance:
at cold 1630 to 2740

at hot 2065 to 3225

NOTICE:
ºColdº and ºHotº in the following sentences express the
temperature of the sensor itself. ºColdº is from ±10
C
(14
F) to 50
C (122
F) and ºHotº is from 50
C (122
F) to
100
C (212
F).
8. INSPECT EDU RELAY
(a) Inspect the relay continuity. (1) Using an ohmmeter, check that there is continuitybetween terminals 1 and 2.
Specified condition: Continuity
(2) Check that there is no continuity between terminals 3 and 5.
Specified condition: No continuity
(b) Inspect the relay operation. (1) Apply battery voltage across terminals 1 and 2.
(2) Using an ohmmeter, check that there is continuitybetween terminals 3 and 5.
Specified condition: Continuity
http://vnx.su

B16200
A31135
±
ENGINE CONTROL SYSTEM ECD SYSTEM (1CD±FTV)
10±59
AVENSIS REPAIR MANUAL (RM1018E)
9. INSPECT EFI MAIN RELAY
(a) Inspect the relay continuity.
(1) Using an ohmmeter, check that there is continuity
between terminals 1 and 2.
Specified condition: Continuity
(2) Check that there is no continuity between terminals 3 and 5.
Specified condition: No continuity
(b) Inspect the relay operation. (1) Apply battery voltage across terminals 1 and 2.
(2) Using an ohmmeter, check that there is continuitybetween terminals 3 and 5.
Specified condition: Continuity
10. INSPECT ACCELERATOR PEDAL ASSY
(a) Inspect the accel position sensor. (1) Using an ohmmeter, measure the resistance be-tween each terminal.
Resistance:
RHD:
Between terminalResistance
5 (VPA1) ± 1 (EP1)5.0 k or less
2 (VPA2) ± 3 (EP2)5.0 kor less
4 (VCP1) ± 1 (EP1)1.5 to 6.0 k 
6 (VCP2) ± 3 (EP2)1.5 to 6.0 k
LHD:
Between terminalResistance
3 (VPA1) ± 4 (EP1)5.0 kor less
6 (VPA2) ± 5 (EP2)5.0 kor less
2 (VCP1) ± 4 (EP1)1.5 to 6.0 k 
1 (VCP2) ± 5 (EP2)1.5 to 6.0 k
http://vnx.su

100EZ±02
A75903
Air
A53763
VG
EVG
10±54
±
ENGINE CONTROL SYSTEMECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
ECD SYSTEM(1CD±FTV)
ON±VEHICLE INSPECTION
1.INSPECTMASS AIR FLOW METER
(a)If you have hand±held tester: Inspect for operation
(1)Connect the hand±held tester to the DLC3.
(2)Turn the ignition switch ON.
(3)Blow air into the MAF meter, and check that the airflow fluctuates (MAF ) of the CURRENT DATA
shown the standard value.
If operation is not as specified, check the MAF meter (See page
10±56), wiring and ECM.
(b)If you have no hand±held tester: Inspect for operation
(1)Turn the ignition switch ON.
(2)Connect the positive tester probe of the voltmeterto the terminal VG of the ECM. and the negative tes-
ter probe of the voltmeter to the terminal EVG of the
ECM.
(3)Blow air into the MAF meter, and check that the volt- age fluctuates.
If operation is not as specified, check the MAF meter (See page
10±56), wiring and ECM.
2.INSPECT INTAKE SHUTTER
(a)Inspect the throttle control motor for operating sound. (1)Turn the ignition switch ON.
(2)When turning the accelerator pedal position sensor lever, check the running sound of the motor.
Also, check that there is no friction sound.
If operation is not as specified, check the throttle control motor (See page 10±56), wiring and ECM.
(b)Inspect the throttle position sensor. (1)Connect the hand±held tester to the DLC3.
(2)Turn the ignition switch ON.
(3)When turning the accelerator pedal position sensor lever to the full±\
open position, check thatthe throttle valve opening percentage (THROTTLE POS) of the CURRENT DATA shown the
standard value.
Standard throttle valve opening percentage:
60 % or more
If operation is not as specified, check that the accelerator pedal positio\
n sensor (See page 10±56), wiring
and ECM.
If you have no hand±held tester, measure voltage between terminals (LU+A ± LU±A, LU+B ± LU±\
B) of the
ECM connector (See page 05±549).
http://vnx.su

±
ENGINE CONTROL SYSTEMECD SYSTEM(1CD±FTV)
10±55
AVENSIS REPAIR MANUAL (RM1018E)
(c)Inspect the air assist system.
(1)Start the engine and check that the CHKENG does not light up.
(2)Allow the engine to warm up to normal operating temperature.
(3)Turn the A/C compressor ON to OFF, and check the idle speed.
Idle speed (Transmission in neutral): 800
50 rpm
NOTICE:
Perform inspection under condition without electrical load.
(d)After checking the above (b) to (d), perform the driving test and check that there is no sense of incon- gruity.
3.INSPECT ACCELERATOR PEDAL POSITION SENSOR
(a)Connect the hand±held tester to the DLC3.
(b)Turn the ignition switch ON.
(c)Check that the voltage (ACCEL POS) of the CURRENT DATA shown the standard value. Accelerator pedal released: 0.5 to 1.1 V
Accelerator pedal depress: 2.6 to 4.5 V
(d)Check that the voltage (ACCEL POS #2) of the CURRENT DATA shown the standard value.
Accelerator pedal released: 1.2 to 2.0 V
Accelerator pedal depress: 3.4 to 5.3 V
If you have no hand±held tester, measure voltage between terminals (VPA1 ± EP1, VPA2 ± EP2) of the ECM
connector (See page 05±549).
http://vnx.su

100FK±01
A77870
Mass Air Flow
Meter Connector
N´m (kgf´cm, ft´lbf) : Specified torqueEngine Cover Sub±assy
No. 1
7.0 (71, 62 in.

lbf)
Fuel Vapor Feed Hose
No. 2
Air Cleaner Cap
Sub±assy VSV
Connector
Fuel Vapor Feed Hose
Clip
Engine Room Cover Side
Radiator Support Opening Cover
Clip Retainer
x2
x4
10±30
±
ENGINE CONTROL SYSTEM KNOCK SENSOR (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
KNOCK SENSOR (1AZ±FE)
COMPONENTS
http://vnx.su

A78452
Non±reusable part
N´m (kgf´cm, ft´lbf) : Specified torque Accelerator
Control Cable Assy

Throttle Body
Gasket
Water By±pass Hose No. 2 Water By±pass Hose Fuel Tube Sub±assy
Fuel Pipe Support
Throttle Position Sensor
Connector
ISC Valve Connector
13 (129, 9)
30 (306, 22)
Throttle Body Assy
±
ENGINE CONTROL SYSTEM KNOCK SENSOR (1AZ±FE)
10±31
AVENSIS REPAIR MANUAL (RM1018E)
http://vnx.su

A78453
Non±reusable part
N´m (kgf´cm, ft´lbf) : Specified torque
20 (204, 15)
Fuel Injector
Connector
EFI Fuel Pipe Clamp
Fuel Tube Sub±assy
Injector Vibration Insulator Delivery Pipe No. 1
Spacer
Fuel Delivery Pipe Sub±assy
Ventilation Hose No. 2
10±32
±
ENGINE CONTROL SYSTEM KNOCK SENSOR (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
http://vnx.su

A77916
Non±reusable part
N´m (kgf´cm, ft´lbf) : Specified torque
30 (306, 22)
Heater Inlet Water Hose
Knock Sensor
ConnectorKnock Sensor
20 (204, 15)
Intake Manifold Insulator No. 1


Intake Manifold
to Head Gasket No. 1
Intake Manifold
LHD Steering Position Type,
Leaded Gasoline:
Variable Resister
5.0 (51, 44 in.
lbf)
Charcoal Canister Assy
Variable Resister Connector
Charcoal Canister
Outlet Hose No. 1
Fuel Hose
x5
±
ENGINE CONTROL SYSTEM KNOCK SENSOR (1AZ±FE)
10±33
AVENSIS REPAIR MANUAL (RM1018E)
http://vnx.su

100FL±01
A77917
A77918
(a)
(b)
A77919
10±34
±
ENGINE CONTROL SYSTEMKNOCK SENSOR(1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
REPLACEMENT
1.DISCHARGE FUEL SYSTEM PRESSURE (See page 11±15)
2.REMOVE ENGINE ROOM COVER SIDE (See page 10±26)
3.REMOVE RADIATOR SUPPORT OPENING COVER (See page 10±26)
4.ENGINE COOLANT (See page 16±19)
5.REMOVE ENGINE COVER SUB±ASSY NO.1 (See page 10±26)
6.REMOVE AIR CLEANER CAP SUB±ASSY (See page 10±26)
7.SEPARATE ACCELERATOR CONTROL CABLE ASSY (See page 10±26)
8.REMOVE THROTTLE BODY ASSY (See page 10±26)
9.DISCONNECT FUEL TUBE SUB±ASSY (See page 11±26) SST 09268±21010
10.REMOVE FUEL DELIVERY PIPE SUB±ASSY (See page 11±26)
11. REMOVE VARIABLE RESISTOR (LHD STEERINGPOSITION TYPE, LEADED GASOLINE)
(a) Disconnect the variable resistor connector.
(b) Remove the bolt, and then remove the variable resistor.
12. REMOVE CHARCOAL CANISTER ASSY
(a) Disconnect the charcoal canister outlet hose No. 1.
(b) Disconnect the fuel hose.
(c) Pull up and remove the charcoal canister.
13. DISCONNECT HEATER INLET WATER HOSE
http://vnx.su

A77920
RHD:
LHD:
A77921
(b)
A77922
A78435
A78436
Upper
Engine
Front
10

10


±
ENGINE CONTROL SYSTEM KNOCK SENSOR (1AZ±FE)
10±35
AVENSIS REPAIR MANUAL (RM1018E)
14. REMOVE INTAKE MANIFOLD
(a) Disconnect the union to connector tube hose.
(b) Remove the wire harness clamp.
(c) Remove the 5 bolts and 2 nuts, and then remove the in-
take manifold.
(d) Remove the gasket from the intake manifold.
15. REMOVE INTAKE MANIFOLD INSULATOR NO.1
16. REMOVE KNOCK SENSOR
(a) Disconnect the knock sensor connector.
(b) Remove the nut, and then remove the knock sensor.
17. INSTALL KNOCK SENSOR
(a) Install the knock sensor with the nut as shown in the il- lustration.
Torque: 20 N
m (204 kgf
cm, 15 ft
lbf)
(b) Connect the knock sensor connector.
http://vnx.su