2005 TOYOTA AVENSIS MOTOR

± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±303
AVENSIS REPAIR MANUAL (RM1018E)Hand±held Tester DisplayDiagnostic Note Normal Condition *
1Measurement Item/Range
(Display)
ACCEL IDL POS
Whether or not accelerator pedal
position sensor is detecting idle/
ON or OFF
Idling: ON

THROTTLE IDL POS
Whether or not throttle position
sensor is detecting idle/
ON or OFF
Idling: ON

FAIL #1Whether or not fail safe function is
executed/ ON or OFFETCS has failed: ON

FAIL #2Whether or not fail safe function is
executed/ ON or OFFETCS has failed: ON

THROTTLE INITIALThrottle fully closed learned value
Min.: 0 V, Max.: 5 V0.5 to 0.9 V

ACCEL LEARN VAL
Accelerator fully closed learned
value
Min.: 0 V, Max.: 5 V
0.4 to 1.4 V

THROTTLE MOTThrottle motor current
Min.: 0 A, Max.: 20 AIdling: 0 to 3.0 A

O2S B1 S1
Heated oxygen sensor output volt-
age for bank 1 sensor 1/
Min.: 0 V, Max.: 1.0 V
O2S B1 S2
Heated oxygen sensor output volt-
age for bank 1 sensor 2/
Min.: 0 V, Max.: 1.0 V
Driving (50 km/h, 31 mph):
Performing the INJ VOL or A/F
CONTROL function of the ACTIVE
O2S B2 S1
Heated oxygen sensor output volt-
age for bank 2 sensor 1/
Min.: 0 V, Max.: 1.0 V
Driving (50 km/h, 31 m h):
0.1 to 0.9 VCONTROL function of the ACTIVE
TEST enables the user to check
the voltage output of each sensor.
O2S B2 S2
Heated oxygen sensor output volt-
age for bank 2 sensor 2/
Min.: 0 V, Max.: 1.0 V
SHORT FT #1Short term fuel trim of bank 1/
Min.: ±100 %, Max.: 100%0 20 %
This item is the short±term fuel
compensation used to maintain the
air±fuel ratio at stoichiometric air±
fuel ratio
LONG FT #1Long term fuel trim of bank 1/
Min.: ±100 %, Max.: 100 %0 20 %
This item is the overall fuel com-
pensation carried out in long±term
to compensate for a continual
deviation of the short±term fuel
trim from the central value.
TOTAL FT #1
Total fuel trim bank 1:
Average value for fuel trim system
of bank 1/
Min.: 0.5, Max.: 1.496
Idling: 0.5 to 1.4

SHORT FT #2Short term fuel trim of bank 2/
Min.: ±100 %, Max.: 100 %0 20 %
This item is the short±term fuel
compensation used to maintain the
air±fuel ratio at stoichiometric air±
fuel ratio
LONG FT #2Long term fuel trim of bank 2/
Min.: ±100 %, Max.: 100 %0 20 %
This item is the overall fuel com-
pensation carried out in long±term
to compensate for a continual
deviation of the short±term fuel
trim from the central value.
TOTAL FT #2
Total fuel trim bank 2:
Average value for fuel trim system
of bank 2/
Min.: 0.5, Max.: 1.496
Idling: 0.5 to 1.4


A19802
Throttle Position Sensor ECM
Magnet
Magnet
IC No.2 IC No.1
VC
VTA1
E2 VTA2Throttle Position Sensor Output Voltage (V)
Fail Safe Angle
*1
Usable Range
Throttle Valve Opening Angle (deg)84 6.5
0 5
2.58
2.25
0.95
0.69
Throttle Valve Fully Opened
(Throttle Position Opening Position Expressed as Percentage
(VTA1) 64 to 96 %)
Fail Safe Angle 6.5
(Throttle Position Opening Position Expressed as Percentage
(VTA1) about 16 %) Throttle Valve Fully Closed
(Throttle Position Opening Position Expressed as Percentage
(VTA1) 10 to 24 %)
*1:
VTA1 VTA2
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±357
AVENSIS REPAIR MANUAL (RM1018E)
CIRCUIT DESCRIPTION
HINT:

This electrical throttle system is no used throttle cable.

This throttle position sensor is non±contact type.
The throttle position sensor is mounted on the throttle body to detect the opening angle of the throttle valve.
Since this sensor is electronically controlled with hall elements, accurate control and reliability can be ob-
tained. It has 2 sensors to detect the throttle opening angle and a malfunction of the throttle position sensor.
The voltage is applied to the terminals VTA1 and VTA2 of the ECM changes between 0 V and 5 V in propor-
tion to the opening angle of the throttle valve. The VTA1 is a signal to indicate the actual throttle valve open-
ing angle which is used for the engine control, and the VTA2 is a signal to indicate the information about the
opening angle which is used for detecting a malfunction.
The ECM judges the current opening angle of the throttle valve from these signals input from terminals VTA1
and VTA2, and the ECM controls the throttle motor to make the throttle valve angle properly in response to
the driving condition.

A71015
0
Accelerator Pedal Opening Angle (deg)125
VPA1 VPA2
5
Movable Range
Usable Range
Usable Range *1
*1
Movable Range
Usable Range
*2
Accelerator pedal released (15
)
Accelerator pedal depressed
(about 100
)
Accelerator Pedal
Position Sensor
Output Voltage (V)
VPA2VPA1 EP2
VCP2
*1:
*
2:
EP1
0.8
105
VCP1*2
*2*1
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±493
AVENSIS REPAIR MANUAL (RM1018E)
CIRCUIT DESCRIPTION
HINT:
This electrical throttle system is no used throttle cable.
The accelerator pedal position sensor is mounted on the accelerator pedal bracket and it have the 2 sensors
to detect the accelerator position and a malfunction of the accelerator position sensor.
In the accelerator pedal position sensor, the voltage applied to VPA1 and VPA2 of the ECM changes be-
tween 0 V and 5 V in proportion to the opening angle of the accelerator pedal. The VPA1 is a signal to indicate
the actual accelerator pedal opening angle which is used for the engine control, and the VPA2 is a signal
to indicate the information about VPA1 which is used for detecting a malfunction in VPA1.
The ECM monitors the current opening angle of the accelerator pedal from these signals input from VPA1
and VPA2, and controls the throttle motor based on these signals.

05±490
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP2119THROTTLE ACTUATOR CONTROL THROTTLE BODY RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
The Electric Throttle Control System (ETCS) is composed of the throttle m\
otor that operates the throttle
valve, the throttle position sensor that detects the opening angle of the throttle valve, the accelerator pedal
position sensor that detects the accelerator pedal position, the ECM that contro\
ls the ETCS, and the one
valve type throttle body.
The ECM controls the throttle motor to provide the proper throttle valve\
opening angle in response to the
driving condition.
The throttle position sensor which is mounted on the throttle body detects \
the opening angle of the throttle
valve, and it provides feedback to the ECM to control the throttle motor.
If the ETCS has a malfunction, the ECM shuts down the power for the throttle motor, and the throttle valve
is closed by the return spring. And the throttle valve is locked at a ce\
rtain opening angle. Also, the whole
electronically controlled throttle operation is cancelled until the system returns to normal and the ignition
switch is turned OFF.
DTC No.DTC Detection ConditionTrouble Area
P2119Throttle opening angle continues to vary greatly from target
throttle opening angle
Electric throttle control system

ECM
WIRING DIAGRAM
Refer to DTC P2102 on page 05±483.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P2119)
(a)Read the DTC using hand±held tester.
Result:
Display (DTC output)Proceed to
Only P2119 is outputA
P2119 and other DTCs are outputB
HINT:
If any other codes besides P2119 are output, perform the troubleshooting for those DTCs first.
BGO TO RELEVANT DTC CHART (See page 05±309)
A
05CKS±01

A59778M±
M+
Component Side
Throttle Body
T1
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±491
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT THROTTLE BODY ASSY
(a)Disconnect the T1 throttle body connector.
(b)Measure the motor resistance between terminals M+ and
M±.
Motor resistance: 0.3 to 100
at 20
C (68
F)
NGREPLACE THROTTLE BODY ASSY
OK
3REPLACE ECM AND CLEAR DTC(CHECK IF DTC OUTPUTS REOCCUR)
(a)Replace the ECM.
(b)Clear the DTC (See page 05±294).
(c) Start and warm up the engine.
(d) Run the engine at idle for 15 sec. or more.
(e)Read the DTC (See page 05±294). Standard: No DTC output.
OK NORMAL
NG
REPLACE THROTTLE BODY ASSY

A76877
ECM
+BM
FL MAINTHROTTLE Engine Room J/B No. 1 and
Engine Room R/B No. 1
E10
IE2 1A 4B15
2 Engine Room J/B No. 4
6
B±G
Battery4A1
B±G
1 1
1G±R G±Y
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±487
AVENSIS REPAIR MANUAL (RM1018E)
DTC P2118 THROTTLE ACTUATOR CONTROL MOTOR
CURRENT RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
If this DTC is detected, the ECM shuts down the power for the throttle motor, and the throttle valve is closed
by the return spring. And the throttle valve is locked at a certain opening angle. Also, the whole electronically
controlled throttle operation is cancelled until the system returns to normal and the ignition switch is turned
OFF.
HINT:
This electrical throttle control system (ETCS) does not use the throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2118Open in ETCS power source circuit
Open in ETCS power source circuit

ECM
WIRING DIAGRAM
05CKR±01

A54292
T1
Throttle Control Motor
(Built in Throttle Body)
2
1B
WECM
3
2
17M+
M±
E11
(Shielded)
E11
E11
GE01
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±483
AVENSIS REPAIR MANUAL (RM1018E)
DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR
CIRCUIT LOW
DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR
CIRCUIT HIGH
CIRCUIT DESCRIPTION
The throttle motor is operated by the ECM and it opens and closes the throttle valve.
The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the
throttle body. It provides feedback to the ECM to control the throttle motor in order to regulate the throttle
valve opening angle properly in response to the driving condition.
If this malfunction is detected, the ECM shuts down the power for the throttle motor, and the throttle valve
is closed by the return spring. And the throttle valve is locked at a certain opening angle. Also, the whole
electronically controlled throttle operation is cancelled until the system returns to normal and the ignition
switch is turned OFF.
HINT:
This electrical throttle system does not use the throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2102
Conditions (a) and (b) continue for 2.0 seconds:
(a) Throttle control motor output duty greater than 80 %
(b) Throttle control motor current less than 0.5 A
Open in throttle control motor circuit

Throttle control motor

ECM
Throttle control motor current greater than 10 A
Short in throttle control motor circuit
P2103Condition (a) continues for 0.6 seconds:
(a) Throttle control motor current greater than 7 A
Short in throttle control motor circuit

Throttle control motor

ECM
WIRING DIAGRAM
05CKP±01

A59778M±
M+
Component Side
Throttle Body
T1
B53781
Wire Harness Side Throttle Body Connector
M± M+
T1
A54408ECM Connector
M±
M+ E11
05±484
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand±held tester. Freeze frame data records the engine conditions when
a malfunction is detected. When troubleshooting, it is useful for determi\
ning whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lea\
n or rich, etc. at the time of the mal-
function.
1INSPECT THROTTLE BODY ASSY(RESISTANCE OF THROTTLE CONTROL MOTOR)
(a)Disconnect the T1 throttle body connector.
(b)Measure the motor resistance between terminals M+ and
M±.
Motor resistance: 0.3 to 100
at 20
C (68
F)
NGREPLACE THROTTLE BODY ASSY (See page 10±44)
OK
2CHECK HARNESS AND CONNECTOR(THROTTLE CONTROL MOTOR ± ECM)
(a)Disconnect the T1 throttle body connector.
(b)Disconnect the E11 ECM connector.
(c)Check for continuity between the wire harness side con- nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
M+ (T1±2) ± M+ (E11±3)ContinuityM± (T1±1) ± M± (E11±2)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
M+ (T1±2) or M+ (E11±3) ± Body groundNocontinuityM± (T1±1) or M± (E11±2) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK AND REPLACE ECM (See page 01±32)