2005 TOYOTA AVENSIS sensor

05±380
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
14 READ OUTPUT DTC(DTC P0133 AND/OR P0153 ARE OUTPUT AGAIN)
(a) Read the DTC using the hand±held tester.
Result:
Display (DTC output)Proceed to
ºP0133 and/or P0153º are output againA
ºP0133 and/or P0153º are not output againB
B REPLACE FUEL INJECTOR ASSY
A
REPLACE HEATED OXYGEN SENSOR

±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±485
AVENSIS REPAIR MANUAL (RM1018E)
DTCP2111THROTTLE ACTUATOR CONTROL SYSTEM
± STUCK OPEN
DTCP2112THROTTLE ACTUATOR CONTROL SYSTEM ± STUCK CLOSED
CIRCUIT DESCRIPTION
The throttle motor is operated by the ECM and it opens and closes the throttle valve using gears. The open-
ing angle of the throttle valve is detected by the throttle position sensor\
which is mounted on the throttle body.
And, it provides feedback to the ECM to control the throttle motor in order \
to make the throttle valve opening
angle properly in response to the driving condition. If this malfunction is d\
etected, the ECM shuts down the
power for the throttle motor, and the throttle valve is closed by the return spring. And the throttl\
e valve is
locked at a certain opening angle. Also, the whole electronically controlled t\
hrottle operation is cancelled until
the system returns to normal and the ignition switch is turned OFF.
HINT:
This electrical throttle system is no used throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2111The throttle motor locked during control by the ECM (Stuck
open)
Throttle control motor circuit

Throttle control motor
P2112The throttle motor locked during control by the ECM (Stuck
closed)
Throttle control motor

Throttle body

Throttle valve
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.
1 INSPECT THROTTLE BODY ASSY(VISUALLY CHECK THROTTLE VALVE)
(a) Check it a foreign object has been caught between the throttle valve and the \
housing.
NG REMOVE FOREIGN OBJECT AND CLEANTHROTTLE BODY
OK
05CKQ±01

A82236
VCP1VCP2
EP2
EP1
LHD Accelerator Pedal Assy
321
6 54
RHD
Accelerator Pedal Assy
321
65 4
VCP2EP2
EP1
VCP1
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±499
AVENSIS REPAIR MANUAL (RM1018E)
DTCP2121THROTTLE/PEDAL POSITION
SENSOR/SWITCH ºDº CIRCUIT
RANGE/PERFORMANCE
CIRCUIT DESCRIPTION
Refer to DTC P2120 on page 05±492.
DTC No.DTC Detection ConditionTrouble Area
P2121
Conditions (a) and (b) continue for 0.5 seconds:
(a) Difference between VPA and VPA2 exceeds the threshold
(b) IDL is OFF
Open or short in accelerator pedal position sensor circuit

Accelerator pedal position sensor

ECM
WIRING DIAGRAM
Refer to DTC P2120 on page 05±492.
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.
1 INSPECT ACCELERATOR PEDAL ASSY(ACCELERATOR PEDAL POSITION
SENSOR)
(a) Disconnect the A20 accelerator pedal position sensor
connector.
(b) Measure the resistance between each terminal. Standard (LHD):
Symbols (Terminal No.)Resistance
EP1 (3) ± VCP1 (6)225to475k
at 20 C (68 F)EP2 (1) ± VCP2 (4)2.25 to 4.75 k
at 20 C (68 F)
Standard (RHD):
Symbols (Terminal No.)Resistance
EP1 (1) ± VCP1 (4)225to475k
at 20 C (68 F)EP2 (3) ± VCP2 (6)2.25 to 4.75 k
at 20 C (68 F)
NG REPLACE ACCELERATOR PEDAL ASSY
OK
05CKU±01

A53765
VPA2 (+)VPA (+)EPA (±)
EPA2 (±)
ECM Connector
E9
A54384
EP2EP1VPA2
VCP2VPA1VCP1
Wire Harness Side
LHD
A20 Accelerator Pedal Position
Sensor Connector
A54384
EP1EP2VPA2
VCP1VPA1VCP2
Wire Harness Side
RHD
A20 Accelerator Pedal Position
Sensor Connector
A54404
EPA2
EPA
E9
VCPA
VCP2
VPA2
VPA
ECM Connector
05±500
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
2INSPECT ECM(VPA AND VPA2 VOLTAGE)
(a)Turn the ignition switch ON.
(b)Measure the voltage between the specified terminals of the E9 ECM connector.
Symbols (Terminal No.)Symbols (Terminal No.)
Accelerator pedal positionVPA (E9±22)
± EPA (E9±28)VPA2 (E9±23) ± EPA2 (E9±29)
Released0.5 to 1.1 V1.5 to 2.9 V
Depressed2.5 to 4.6 V3.5 to 5.5 V
OKCHECK AND REPLACE ECM(See page 01±32)
NG
3 CHECK HARNESS AND CONNECTOR(ACCELERATOR PEDAL POSITION SENSOR ± ECM)
(a) Disconnect the accelerator pedal position sensor con-
nector.
(b) Disconnect the E9 ECM connector.
(c) Check for continuity between the wire harness side con- nectors.
Standard (LHD):
(Check for open)
Symbols (Terminal No.)Specified condition
VPA1 (A20±5) ± VPA (E9±22)
EP1 (A20±3) ± EPA (E9±28)
VCP1 (A20±6) ± VCPA (E9±26)ContinuityVPA2 (A20±2) ± VPA2 (E9±23)Continuity
EP2 (A20±1) ± EPA2 (E9±29)
VCP2 (A20±4) ± VCP2 (E9±27)
(Check for Short)
Symbols (Terminal No.)Specified condition
VPA1 (A20±5) or VPA (E9±22) ± Body ground
EP1 (A20±3) or EPA (E9±28) ± Body ground
VCP1 (A20±6) or VCPA (E9±26) ± Body groundNo continuityVPA2 (A20±2) or VPA2 (E9±23) ± Body groundNo continuity
EP2 (A20±1) or EPA2 (E9±29) ± Body ground
VCP2 (A20±4) or VCP2 (E9±27) ± Body ground
Standard (RHD):
(Check for open)
Symbols (Terminal No.)Specified condition
VPA1 (A20±5) ± VPA (E9±22)
EP1 (A20±1) ± EPA (E9±28)
VCP1 (A20±4) ± VCPA (E9±26)ContinuityVPA2 (A20±2) ± VPA2 (E9±23)Continuity
EP2 (A20±3) ± EPA2 (E9±29)
VCP2 (A20±6) ± VCP2 (E9±27)

05±436
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0340 CAMSHAFT POSITION SENSOR ºAº
CIRCUIT (BANK 1 OR SINGLE SENSOR)
DTC P0341 CAMSHAFT POSITION SENSOR ºAº
CIRCUIT RANGE/PERFORMANCE (BANK 1
SINGLE SENSOR)
CIRCUIT DESCRIPTION
The camshaft position sensor (G2 signal) consists of a magnet, iron core and pickup coil.
The G2 signal rotor has 3 teeth on the outside and is mounted on the intake camshaft.
When the camshafts rotate, the protrusion on the signal plate and the air gap on the pickup coil changes,
causing fluctuations in the magnetic field and generating an electromotive force in the pickup coil.
The NE signal plate (crankshaft position sensor plate No. 1) has 34 teeth and is installed on the crankshaft.
The NE signal sensor generates 34 signals at every engine revolution. The ECM detects the crankshaft
angle and the engine revolution based on the NE signal, and the cylinder and the angle of the VVT based
on the combination of the G2 and NE signal.
DTC No.DTC Detection ConditionTrouble Area
No camshaft position sensor (G2) signal to ECM during crank-
ing for 4 sec. or more (2 trip detection logic).
O h t i h ft iti i itP0340No camshaft position sensor (G2) signal to ECM with engine
speed 600 rpm or more for 5 sec. or more
(1 trip detection logic).
Open or short in camshaft position sensor circuit

Camshaft position sensor

Camshaft timing gear

Timing chain has jumped a tooth
P0341
While crankshaft rotates twice, camshaft position sensor (G2)
signal will be input to ECM 12 times or more
(1 trip detection logic).
Timing chain has jumped a tooth

ECM
HINT:

DTC P0340 indicate a malfunction related to the camshaft position sensor (+) circuit.
(Wire harness (ECM ± camshaft position sensor) and camshaft position sensor)

DTC P0341 indicate a malfunction related to the camshaft position sensor (±) circuit.
(Wire harness (ECM ± camshaft position sensor) and camshaft position sensor)
05CKK±01

A76903
NE+
G2+
NE±ECM Connector E11
A59781
A64984Camshaft Position Sensor
Component Side
C1
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
05±437
AVENSIS REPAIR MANUAL (RM1018E)
Reference: Inspection using the oscilloscope.
(1)During cranking or idling, check the waveform be-tween the terminals of the ECM connector.
ItemDetails
TerminalCH1: G2+ ± NE±
CH2: NE+ ± NE±
Equipment Setting5 V/Division, 20 ms/Division
ConditionDuring Cranking or idling
HINT:
The correct waveforms are as shown in the left.
WIRING DIAGRAM
Refer to DTC P0335 on page 05±433.
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.
1 INSPECT CAMSHAFT POSITION SENSOR(RESISTANCE)
(a) Disconnect the C1 camshaft position sensor connector.
(b) Measure the resistance between the terminals of the camshaft position sensor.
Resistance:
835 to 1,400  at cold
1,060 to 1,645 at hot
NOTICE:
ºColdº and ºHotº shown above mean the temperature of
the coils themselves. 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).
NG REPLACE CAMSHAFT POSITION SENSOR
OK


NE+NE±
A52871
Camshaft Position Sensor Connector
Wire Harness Side
C1
A81698
G2+ NE±
ECM Connector E11
05±438
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
2CHECK HARNESS AND CONNECTOR(ECM ± CAMSHAFT POSITION SENSOR)
(a)Disconnect the C1 camshaft position sensor 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
Camshaft position sensor (C1±1) ± G2+ (E11±27)ContinuityCamshaft position sensor (C1±2) ± NE± (E11±24)Continuity
Standard (Check for short):
Symbols (Terminal No.)Specified condition
Camshaft position sensor (C1±1)or G2+ (E11±27)
± Body ground
NocontinuityCamshaft position sensor (C1±2)or NE± (E11±24) ± Body groundNo continuity
NGREPAIR OR REPLACE HARNESS ORCONNECTOR
OK
3CHECK SENSOR INSTALLATION(CAMSHAFT POSITION SENSOR)
(a)Inspect the camshaft position sensor installation. NGTIGHTEN SENSOR
OK
4INSPECT CAMSHAFT
(a)Remove the camshafts (See page 14±240).
(b) Check the camshaft lobes. NG REPLACE CAMSHAFT
OK
CHECK AND REPLACE ECM (See page 01±32)

05±420
± DIAGNOSTICSSFI SYSTEM (1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0300 RANDOM/MULTIPLE CYLINDER MISFIRE
DETECTED
DTC P0301 CYLINDER 1 MISFIRE DETECTED
DTC P0302 CYLINDER 2 MISFIRE DETECTED
DTC P0303 CYLINDER 3 MISFIRE DETECTED
DTC P0304 CYLINDER 4 MISFIRE DETECTED
CIRCUIT DESCRIPTION
Misfire: The ECM uses the crankshaft position sensor and camshaft position sensor to monitor changes in
the crankshaft rotation for each cylinder.
The ECM counts the number of times the engine speed change rate indicates that misfire has occurred. And
when the misfire rate equals to or exceeds the count of indicating that the engine condition has deteriorated,
the CHK ENG is illuminated.
If the misfire rate is high enough and the driving conditions will cause the catalyst to overheat, the CHK ENG
blinks when misfiring occurs.
HINT:

For any particular 200 revolutions of the engine, misfiring which would result in overheating of catalyst
is detected. This cause CHK ENG to blink (1 trip detection logic).

For any particular 1,000 revolutions of engine, misfiring which would result in a deterioration of emis-
sions. This illuminates CHK ENG (2 trip detection logic).
DTC No.DTC Detection ConditionTrouble Area
P0300Misfiring of random cylinders is detected

Open or short in engine wire

Connector connection

Vacuum hose connection

Ignition system

Injector
P0301
P0302
Misfiring of each cylinder is detected

Fuel pressure

Mass air flow meter

Engine coolant temperature sensor

Compression pressure


Valve clearanceP0302
P0303
P0304Misfiring of each cylinder is detected
Valve clearance

Valve timing

PCV hose connection

PCV hose

ECM
HINT:
When codes for a misfiring cylinder are recorded repeatedly but no random misfire code is recorded, it indi-
cates that the misfires have been detected and recorded at different times.
05CKH±01