2005 TOYOTA AVENSIS Circuit

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

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

A76875
ECM
SCV 5
E13 EFI Relay
1 1 23
Engine Room
J/B No. 4B±W
1MREL 8
E9
Battery FL MAIN B±G2 5
GR
V6
VSV (Intake Air Control Valve)
2
L±B EFI No. 2 1
B±G
W±B
ECW±B
4A
14B11AEFI
1B±Y
1
2 4
4
44
4
4
B±W Engine Room
R/B No. 1
and
Engine Room
J/B No. 1Engine Room R/B No. 4
GR
B±W
EA113IE1 2 05±480
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P2008 INTAKE MANIFOLD RUNNER CONTROL
CIRCUIT / OPEN (BANK 1)
CIRCUIT DESCRIPTION
The Intake Air Control valve (IACV) is opened and shut by the actuator with intake manifold vacuum.
It stabilizes the engine combustion. The IACV operation generates swirl air flow in the cylinder.
DTC No.DTC Detection ConditionTrouble Area
P2008Open or short in VSV for IACV circuit 0.5 sec. or more
(2 trip detection logic)
Open of short in VSV for IACV circuit

VSV for IACV

ECM
WIRING DIAGRAM
05CK5±01

A81699SCV
E13ECM Connector
A56870
Wire Harness Side
VSV for IACV Connector
V6
A66053
Engine Room R/B No. 4EFI Relay
A56870
Wire Harness Side
VSV for IACV Connector
V6
05±482
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
4CHECK HARNESS AND CONNECTOR(ECM ± VSV FOR IACV)
(a)Disconnect the V6 VSV for IACV connector.
(b)Disconnect the E13 ECM connector.
(c)Check for continuity between the wire harness side con- nectors.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
VSV for IACV (V6±2) ± SCV (E13±5)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
VSV for IACV (V6±2) or SCV (E13±5) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
5CHECK HARNESS AND CONNECTOR(EFI RELAY ± VSV FOR IACV)
(a)Inspect the EFI No. 2 fuse. (1)Remove the EFI No. 2 fuse from the engine roomR/B No. 4.
(2)Check the continuity of the EFI No. 2 fuse.
Standard: Continuity
(b)Remove the EFI relay from the engine room R/B No. 4.
(c)Disconnect the V6 VSV for IACV connector.
(d)Check for continuity between the wire harness side con- nector.
Standard (Check for open):
Symbols (Terminal No.)Specified condition
VSV for IACV (V6±1) ± EFI relay (3)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
VSV for IACV (V6±1) or EFI relay (3) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR ECM POWER SOURCE CIRCUIT (See page 05±502)

A76876
ECM
J13G
FP+ 6
R
E12
D(Shielded)
J13 E
J12 E J12D
BRBR
EEJ/C21 S3
Fuel Pump
(High Pressure)
(Spill Valve)
G
FP± 3
E12
(Shielded) BR
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
05±477
AVENSIS REPAIR MANUAL (RM1018E)
DTC P1235 HIGH PRESSURE FUEL PUMP CIRCUIT
CIRCUIT DESCRIPTION
The fuel pump (high pressure) is an electronically controlled plunger type fuel pump (high pressure) which
is driven by the cam provided on the intake cam shaft rear end on the cylinder head.
The fuel pump (high pressure) increases the pressure of the fuel fed from the fuel pump (low pressure) in
the fuel tank at 8 to 13 MPa (81.6 to 132.6 kgf/cm
2, 1,160 to 1,885 psi) according to the operating condition,
and it feeds the fuel to the fuel delivery pipe.
DTC No.DTC Detection conditionTrouble Area
O h ti f l (hi h ) i itf 1
Open or short in fuel pump (high pressure)
P1235Open or short in fuel pump (high pressure) circuit for 1sec. or
more

Oen or short in fuel um (high ressure)

Fuel pump (high pressure)P1235moreFuel um (high ressure)

ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Read freeze frame data using hand±held tester. Freeze frame data records the engine conditions when the
malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running
or stopped, the engine was warmed up or not, the air±fuel ratio was lean or rich, etc. at the time of the mal-
function.
05CK4±01

054JF±04
±
DIAGNOSTICS ECD SYSTEM (1CD±FTV)
05±551
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
When the malfunction code is not confirmed the DTC check and the problem sti\
ll can not be confirmed in
the basic inspection, then proceed to this step and perform troubleshooting\
according to the numbered order
given in the table below.
SymptomSuspect AreaSee page
Does not crank (Difficult to start)
2. Starter
3. Starter relay
4. Engine coolant temperature sensor19±22
19±22
10±56
Difficult to start with a cold engine
1. STA signal circuit
2. Injector
3. Fuel filter
4. Compression
5. EC

6. Supply pump
7. Fuel pressure sensor
8. Diesel throttle
9. Glow plug system05±691 11±56
11±82
14±266 10±56
10±56
10±56
10±56
10±56
Difficult to start with a warm engine
1. STA signal circuit
2. Injector
3. Fuel filter
4. Compression
5. EC

6. Supply pump
7. Fuel pressure sensor
8. Diesel throttle05±691 11±56
11±82
14±266 10±56
10±56
10±56
10±56
Engine stalls soon after starting
1. Fuel filter
2. Injector
3. EC
power source circuit
4. EC

5. Supply pump
6. Fuel pressure sensor
7. Diesel throttle11±82
11±56
05±686 10±56
10±56
10±56
10±56
Engine stalls (Other than conditions listed abobe)
1. EC
power source circuit
2. Injector
3. EC

4. Supply pump
5. Fuel pressure sensor
6. Diesel throttle05±686 11±56
10±56
10±56
10±56
10±56
Incorrect first idle (Poor idling)
1. Fuel filter
2. Injector
3. EC

4. Supply pump
5. Fuel pressure sensor11±82
11±56
10±56
10±56
10±56
High engine idle speed (Poor idling)
1. A/C signal circuit
2. Injector
3. STA signal circuit
4. EC

5. Supply pump
6. Fuel pressure sensor55±3
11±56
05±691 10±56
10±56
10±56

05±552
±
DIAGNOSTICS ECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
Lower engine idle speed (Poor idling)
1. A/C signal circuit
2. Injector
3. EGR system
4. Compression
5. Valve clearance
6. Fuel line (Air bleed)
7. EC


8. Supply pump
9. Fuel pressure sensor
10.Diesel throttle55±3
11±56
12±16
14±266
14±270 ±
10±56
10±56
10±56
10±56
Rough idling (Poor idling)
1. Injector
2. Fuel line (Air bleed)
3. EGR system
4. Compression
5. Valve clearance
6. EC

7. Supply pump
8. Fuel pressure sensor
9. Diesel throttle11±56 ±
12±16
14±266
14±270 10±56
10±56
10±56
10±56
Hunting at hot engine (Poor idling)
1. Injector
2. EC
power source circuit
3. Compression
4. Fuel line (Air bleed)
5. Valve clearance
6. EC

7. Supply pump
8. Fuel pressure sensor
9. Diesel throttle11±56
05±686
14±266 ±
14±270
10±56
10±56
10±56
10±56
Hunting at cold engine (Poor idling)
1. Injector
2. EC
power source circuit
3. Compression
4. Fuel line (Air bleed)
5. Valve clearance
6. EC

7. Supply pump
8. Fuel pressure sensor
9. Diesel throttle11±56
05±686
14±266 ±
14±270
10±56
10±56
10±56
10±56
Hesitation/ Poor acceleration (Poor driveability)
1. Injector
2. Fuel filter
3. EGR system
4. Compression
5. EC

6. Supply pump
7. Fuel pressure sensor
8. Diesel throttle11±56
11±82
12±16
14±266 10±56
10±56
10±56
10±56
Knocking (Poor driveability)
1. Injector
2. EGR system
3. EC

4. Supply pump
5. Fuel pressure sensor11±56
12±16
10±56
10±56
10±56
Black smoke (Poor driveability)
1. Injector
2. EGR system
3. EC

4. Supply pump
5. Fuel pressure sensor
6. Diesel throttle11±56
12±16
10±56
10±56
10±56
10±56