2005 TOYOTA AVENSIS sensor

A53765
VCP2 (+) VCPA (+)
EPA (−)
EPA2 (−)
ECM Connector
E9
A53765
VPA2 (+) VPA (+)
EPA (−)
EPA2 (−)
ECM Connector
E9
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−229
AVENSIS Supplement (RM1045E)
3 INSPECT ECM(VCPA AND VCP2 VOLTAGE)
(a) Disconnect the A20 accelerator pedal position sensor
connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage between the terminals of the E9
ECM connector.
Standard:
Tester ConnectionSpecified Condition
VCPA (E9−26)−EPA (E9−28)4.5 to 5.5 V
VCP2 (E9−27)−EPA2 (E9−29)4.5 to 5.5 V
(d) Reconnect the accelerator pedal position sensor connec-
tor.
NG REPLACE ECM (See page10−65 of Pub. No.
RM1018E AVENSIS)
OK
4 INSPECT ECM(VPA AND VPA2 VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the terminals of the E9
ECM connector.
Accelerator Pedal PositionTester ConnectionSpecified Condition
ReleasedVPA (E9−22)
−EPA (E9−28)0.5 to1.1V
DepressedVPA (E9−22)
−EPA (E9−28)2.5 to 4.6 V
ReleasedVPA2 (E9−23)
−EPA2 (E9−29)1.5 to 2.9 V
DepressedVPA2 (E9−23)
−EPA2 (E9−29)3.5 to 5.5 V
OK REPLACE ECM (See page10−65 of Pub. No.
RM1018E AVENSIS)
NG

Accelerator Pedal Position Sensor
Connector
A54384
EP2
EP1VPA2
VCP2
VPA1VCP1 Wire Harness Side
LHD
A20
Front View
Accelerator Pedal Position Sensor
Connector
A54384
EP1
EP2
VPA2
VCP1
VPA1VCP2 Wire Harness Side
RHD
A20
Front View
A54404
EPA2
EPA
E9
VCPA VCP2
VPA2
VPA
ECM Connector 05−230
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
5 CHECK HARNESS AND CONNECTOR(ACCELERATOR PEDAL POSITION
SENSOR−ECM)
(a) Disconnect the A20 accelerator pedal position sensor
connector.
(b) Disconnect the E9 ECM connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (LHD):
(Check for open)
Tester ConnectionSpecified Condition
VPA1(A20−5)−VPA (E9−22)Below1

EP1(A20−3)−EPA (E9−28)Below1

VCP1(A20−6)−VCPA (E9−26)Below1

VPA2 (A20−2)−VPA2 (E9−23)Below1

EP2 (A20−1)−EPA2 (E9−29)Below1

VCP2 (A20−4)−VCP2 (E9−27)Below1

(Check for Short)
Tester ConnectionSpecified Condition
VPA1(A20−5) or VPA (E9−22)−Body ground10k
or higher
EP1(A20−3) or EPA (E9−28)−Body ground10k
or higher
VCP1(A20−6) or VCPA (E9−26)−Body ground10k
or higher
VPA2 (A20−2) or VPA2 (E9−23)−Body ground10k
or higher
EP2 (A20−1) or EPA2 (E9−29)−Body ground10k
or higher
VCP2 (A20−4) or VCP2 (E9−27)−Body ground10k
or higher
Standard (RHD):
(Check for open)
Tester ConnectionSpecified Condition
VPA1(A20−5)−VPA (E9−22)Below1

EP1(A20−1)−EPA (E9−28)Below1

VCP1(A20−4)−VCPA (E9−26)Below1

VPA2 (A20−2)−VPA2 (E9−23)Below1

EP2 (A20−3)−EPA2 (E9−29)Below1

VCP2 (A20−6)−VCP2 (E9−27)Below1

(Check for Short)
Tester ConnectionSpecified Condition
VPA1(A20−5) or VPA (E9−22)−Body ground10k
or higher
EP1(A20−1) or EPA (E9−28)−Body ground10k
or higher
VCP1(A20−4) or VCPA (E9−26)−Body ground10k
or higher
VPA2 (A20−2) or VPA2 (E9−23)−Body ground10k
or higher
EP2 (A20−3) or EPA2 (E9−29)−Body ground10k
or higher
VCP2 (A20−6) or VCP2 (E9−27)−Body ground10k
or higher
(d) Reconnect the accelerator pedal position sensor connec-
tor.
(e) Reconnect the ECM connector.

−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −217
AVENSIS Supplement (RM 1045E)
DTC P2 111 THROTTLE ACTUATOR CONTROL SYSTEM
− STUCK OPEN
DTC P2 11 2 THROTTLE 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.
The throttle position sensor provides feedback to the ECM to control the throttle motor and set the throttle
valve angle in response to driver input.
HINT:
This Electrical Throttle Control System (ETCS) does not use a throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2 111Throttle valve opening angle is stuck during ECM orders to
close ( 1 trip detection logic)
S Throttle control motor circuit
S Throttle control motor
S Throttle body
S Throttle valve
P2 11 2Throttle valve opening angle is stuck during ECM orders to
open ( 1 trip detection logic)
SThrottle control motor circuit
S Throttle control motor
S Throttle body
S Throttle valve
WIRING DIAGRAM
Refer to DTC P2 102 on page 05 −214.
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, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1 INSPECT THROTTLE BODY ASSY(VISUALLY CHECK THROTTLE VALVE)
(a) Check if a foreign object has been caught between the throttle valve and the housing.
NG REMOVE FOREIGN OBJECT AND CLEANTHROTTLE BODY
OK
05CKQ −02

A54292
T1
Throttle Control Motor
(Built in Throttle Body)
2
1B
WECM
3
2
17M+
M−
E11
(Shielded)
E11
E11
GE01 05−214
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
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. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to
control the throttle motor and monitor the throttle opening angle as the ECM responds to driver input.
HINT:
This Electrical Throttle Control System (ETCS) does not use a throttle cable.
DTC No.DTC Detection ConditionTrouble Area
P2102
Conditions (a) and (b) continue for 2.0 seconds:
(1 trip detection logic)
(a) Throttle control motor output duty greater than 80 %
(b) Throttle control motor current less than 0.5 ASOpen in throttle control motor circuit
SThrottle control motor
SECM
P2103
Either of following conditions is met. (1 trip detection logic)
SThrottle control motor current 10 A or more (0.1 second)
SThrottle control motor current 7A or more (0.6second)
SShort in throttle control motor circuit
SThrottle control motor
SThrottle valve
SThrottle body assembly
SECM
WIRING DIAGRAM
05CKP−02

A76868
B2
Brake Booster Pressure Sensor18
E13 ECM
5V
E1
3
R−W
26
Y
2
1
BR 28
E2PB
VC
PIM
E2 E13
E13
VC
R−W
Y
BR
9
EA1
11
10
EA1
EA1
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −1 91
AVENSIS Supplement (RM1045E)
DTC P0555 BRAKE BOOSTER PRESSURE SENSOR
CIRCUIT
DTC P0557 BRAKE BOOSTER PRESSURE SENSOR CIRCUIT LOW INPUT
DTC P0558 BRAKE BOOSTER PRESSURE SENSOR CIRCUIT HIGH INPUT
CIRCUIT DESCRIPTION
The brake booster pressure sensor detects internal pressure of the brake booster as voltage. A structure
of the sensor and its connection to the ECM are the same as those of the intake air pressure sensor (refer
to DTC P0105 on page 05 −61).
In order to purify emission gas when starting a cold engine, drastically retard the ignition timing to quickly
activate tha catalyst. Upon this, the throttle valve is opened larger than the throttle opening angle with a warm
engine, therefore the intake manifold pressure will be closer to atmospheric pressure. If the negative pres-
sure (vacuum) applied inside the brake booster drops, the ECM cancels the drastic retarding timing and
introduces the negative pressure (vacuum) into the intake manifold, and the ECM then resumes the drastic
retarding timing after the brake booster negative pressure (vacuum) is ensured at required level.
DTC No.DTC Detection ConditionTrouble Area
P0555Open or short in brake booster pressure sensor circuit for 5
seconds or more
S Open or short in brake booster pressure sensor circuit
S Brake booster pressure sensor
S Vacuum hose
S ECM
P0557Open in brake booster pressure sensor circuit for 5 seconds or
more
SOpen or short in brake booster pressure sensor circuit
S Brake booster pressure sensor
S Vacuum hose
S ECM
P0558Short in brake booster pressure sensor circuit for 5 seconds or
more
SOpen or short in brake booster pressure sensor circuit
S Brake booster pressure sensor
S Vacuum hose
S ECM
WIRING DIAGRAM
05CKN −02

A76903
E2 (−)
VC (+)
ECM Connector
E13
A76903
PB (+)
E2 (
−)
ECM Connector
E13
05−1 92
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
S If different DTCs related to different systems that have terminal E2 as the ground terminal are output
simultaneously, terminal E2 may have an open circuit.
S Read freeze frame data using the hand−held tester . Freeze frame data records the engine conditions
when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the
vehicle was running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or
rich, and other data from the time the malfunction occurred.
1 CHECK VACUUM HOSES(BRAKE BOOSTER PRESSURE SENSOR − BRAKE
BOOSTER, INTAKE MANIFOLD − BRAKE BOOSTER)
(a) Check that the vacuum hoses are connected correctly.
(b) Check that the vacuum hoses are not loose or disconnected.
(c) Check the vacuum hoses and tubes for clogs, cracks, holes, damage, or blockage.
NG REPAIR OR REPLACE VACUUM HOSES
OK
2 INSPECT ECM(VC VOLTAGE)
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the specified terminals of the E13 ECM connector.
Standard:
Tester ConnectionSpecified Condition
VC (E13 −18) − E2 (E13 −28)4.5 to 5.5 V
NG REPLACE ECM (See page 10 − 65 of Pub. No.
RM 1018E AVENSIS)
OK
3 INSPECT ECM(PB VOLTAGE)
(a) Measure the voltage between the specified terminals of the E13 ECM connector.
Standard:
Tester ConnectionConditionSpecified Condition
PB (E13 −26) −
E2 (E13 −28)Ignition switch ON
(do not start engine)0.5 to 4.5 V
PB (E13 −26) −
E2 (E13 −28)Idling0.5 to 4.5 V
NG Go to step 4
OK
CHECK FOR INTERMITTENT PROBLEMS (See Page 05 −7)

A81699PBE2
E13
ECM Connector
VC
123
A85679
PIM
E2Brake Booster Pressure
Sensor Connector Wire Harness Side:B2
VC
Front View
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−193
AVENSIS Supplement (RM1045E)
4 CHECK HARNESS AND CONNECTOR(ECM−BRAKE BOOSTER PRESSURE
SENSOR)
(a) Disconnect the E13 ECM connector.
(b) Disconnect the B2 brake booster pressure sensor con-
nector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
VC (E13−18)−VC (B2−3)Below 1

PB (E13−26)−PIM (B2−2)Below 1

E2 (E13−28)−E2 (B2−1)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
VC (E13−18) or VC (B2−3)−Body ground10 k
or higher
PB (E13−26) or PIM (B2−2)−Body ground10 k
or higher
(d) Reconnect the ECM connector.
(e) Reconnect the brake booster pressure sensor connector.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
REPLACE BRAKE BOOSTER PRESSURE SENSOR

−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −1 89
AVENSIS Supplement (RM 1045E)
DTC P0505 IDLE AIR CONTROL SYSTEM
CIRCUIT DESCRIPTION
The idle speed is controlled by the Electric Throttle Control System (ETCS).
ETCS is composed of the throttle motor which operates the throttle valve, the throttle position sensor which
detects the opening angle of the throttle valve, the accelerator pedal position sensor which detects the accel-
erator pedal position,and the one valve type throttle body.
The ECM controls the throttle motor to make the throttle valve opening angle properly for the target idle
speed.
DTC No.DTC Detection ConditionTrouble Area
P0505Idle speed continues to vary greatly from target speed
(2 trip detection logic)S Electric throttle control system
S Air induction system
S PCV hose connection
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, freeze frame data can help determine if the vehicle was
running or stopped, if the engine was warmed up or not, if the air −fuel ratio was lean or rich, and other data
from the time the malfunction occurred.
1 CHECK OTHER DTC OUTPUT(IN ADDITION TO DTC P0505)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to ON and turn the hand −held tester ON.
(c) Select the item: DIAGNOSIS / OBD/MOBD / DTC INFO / CURRENT CODES.
(d) Read the DTCs using the hand −held tester.
Result:
Display (DTC output)Proceed to
P0505A
P0505 and other DTCsB
HINT:
If any other codes besides P0505 are output, perform troubleshoot for those DTCs first.
B GO TO RELEVANT DTC CHART(See page 05 −31)
A
2 CHECK CONNECTION OF PCV HOSE
NG REPAIR OR REPLACE PCV HOSE
OK
05HIN −01