2005 TOYOTA AVENSIS diagnostic

A82234
Engine Room R/B No.1:
THROTTLE Fuse
A67404
+BM
E10
ECM Connector
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
05−221
AVENSIS Supplement (RM1045E)
OK REPLACE ECM (See page10−65 of Pub. No.
RM1018E AVENSIS)
NG
3 CHECK HARNESS AND CONNECTOR(ECM−THROTTLE FUSE, THROTTLE FUSE
−BATTERY)
(a) Check the harness and the connector between the
THROTTLE fuse and the ECM.
(1) Remove the THROTTLE fuse from the engine room
R/B No.1.
(2) Disconnect the E10 ECM connector.
(3) Check the resistance between the wire harness
side connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
Engine room R/B No.1(THROTTLE fuse terminal 2)−
+BM (E10−6)Below1

Standard (Check for short):
Tester ConnectionSpecified Condition
Engine room R/B No.1(THROTTLE fuse terminal 2) or
+BM (E10−6)−Body ground10k
or higher
(4) Reinstall the THROTTLE fuse.
(5) Reconnect the ECM connector.
(b) Check the harness and the connector between the
THROTTLE fuse and the battery.
(1) Remove the THROTTLE fuse from the engine room
R/B No.1.
(2) Disconnect the positive battery cable.
(3) Check the resistance between the wire harness
side connectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
Battery positive cable−
Engine room R/B No.1(THROTTLE fuse terminal1)Below1

Standard (Check for short):
Tester ConnectionSpecified Condition
Battery positive cable or Engine room R/B No.1
(THROTTLE fuse terminal1)−Body ground10k
or higher
(4) Reinstall the THROTTLE fuse.
(5) Reconnect the positive battery cable.
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ENGINE ROOM RELAY BLOCK

−
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

A59778
M−
M+
Component Side:
Throttle Body
T 1
Front View
B5378 1
Wire Harness Side:
Throttle Body Connector
M −
M+
T1
Front View
A54408ECM Connector
M −
M+ E
11
05 −218
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM 1045E)
2 INSPECT THROTTLE BODY ASSY(RESISTANCE OF THROTTLE CONTROL
MOTOR)
(a) Disconnect the T 1 throttle body connector.
(b) Measure the resistance between terminals of the throttle body.
Standard:
Tester ConnectionSpecified Condition
M+ (T 1− 2)− M− (T 1−1 )0.3 to 100
at 20 _ C (68 _ F)
(c) Reconnect the throttle body connector.
NG REPLACE THROTTLE BODY ASSY (See Page 10 − 8)
OK
3 CHECK HARNESS AND CONNECTOR(THROTTLE CONTROL MOTOR − ECM)
(a) Disconnect the T 1 throttle body connector.
(b) Disconnect the E 11 ECM connector.
(c) Check the resistance between the wire harness side con- nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
M+ (T 1− 2)− M+ (E 11− 3)Below 1

M− (T 1−1 )− M− (E 11− 2)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
M+ (T 1− 2) or M+ (E 11− 3)− Body ground10k
or higher
M− (T 1−1 )or M − (E 11− 2)− Body ground10k
or higher
(d) Reconnect the throttle body connector.
(e) Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
CHECK FOR INTERMITTENT PROBLEMS (See page 05 −7)

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

A59778
M−
M+
Component Side:
Throttle Body
T1
Front View
B53781
Wire Harness Side:
Throttle Body Connector
M −
M+
T1
Front View
A54408ECM Connector
M−
M+ E11
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −215
AVENSIS Supplement (RM1045E)
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(RESISTANCE OF THROTTLE CONTROL
MOTOR)
(a) Disconnect the T1 throttle body connector.
(b) Measure the resistance between terminals of the throttle
body.
Standard:
Tester ConnectionSpecified Condition
M+ (T1 −2) − M− (T1 −1)0.3 to 100
at 20 _ C (68 _ F)
(c) Reconnect the throttle body connector.
NG REPLACE THROTTLE BODY ASSY (See page 10− 8)
OK
2 CHECK HARNESS AND CONNECTOR(THROTTLE CONTROL MOTOR −ECM)
(a) Disconnect the T1 throttle body connector.
(b) Disconnect the E11 ECM connector.
(c) Check the resistance between the wire harness side con-
nectors.
Standard (Check for open):
Tester ConnectionSpecified Condition
M+ (T1 −2) −M+ (E11 −3)Below 1

M− (T1 −1) −M− (E11 −2)Below 1

Standard (Check for short):
Tester ConnectionSpecified Condition
M+ (T1−2) or M+ (E11 −3) −Body ground10 k
or higher
M− (T1 −1) or M −(E11 −2) −Body ground10 k
or higher
(d) Reconnect the throttle body connector.
(e) Reconnect the ECM connector.
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

05−216
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
3 INSPECT THROTTLE BODY ASSY(VISUALLY CHECK THROTTLE VALVE)
(a) Check between the throttle valve and the housing for foreign objects.
Also, check if the valve can open and close smoothly.
NG REMOVE FOREIGN OBJECT AND CLEAN
THROTTLE BODY
OK
REPLACE ECM (See page10−65 of Pub. No. RM1018E AVENSIS)

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
14B 11AEFI
1B−Y
1
2 4
4
44
4
4
B−W Engine Room
R/B No. 1Engine Room R/B No. 4
GR
B−W
EA113IE1 2 Engine Room
J/B No. 1 05−210
− DIAGNOSTICSSFI SYSTEM (2AZ−FSE)
AVENSIS Supplement (RM1045E)
DTC P2008 INTAKE MANIFOLD RUNNER CONTROL
CIRCUIT / OPEN (BANK1)
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 second or more
(2 trip detection logic)SOpen of short in VSV for IACV circuit
SVSV for IACV
SECM
WIRING DIAGRAM
05HIP−01

A81701VSV is ON VSV is OFFE
F E
F Air
Air
A76903
E01 (
−)
SCV (+)
ECM Connector
E13
−
DIAGNOSTICS SFI SYSTEM (2AZ−FSE)
05 −211
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
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 PERFORM ACTIVE TEST BY HAND −HELD TESTER(VSV FOR IACV)
(a) Disconnect the vacuum hose from the VSV for IACV.
(b) Turn the ignition switch to ON.
(c) Select the item: DIAGNOSIS / OBD/MOBD / ACTIVE
TEST / SCV VSV (press the right or left button).
(d) Check the VSV for IACV operation when it is operated by the hand −held tester.
Standard:
Tester OperationSpecified Condition
VSV is ONAir from port E flows out through port F
VSV is OFFAir does not flow from port E to port F
NG Go to step 2
OK
CHECK FOR INTERMITTENT PROBLEMS (See Page 05 −7)
2 INSPECT VACUUM SWITCHING VALVE ASSY NO. 1(VSV FOR IACV)
(See page 12− 3)
NG REPLACE VACUUM SWITCHING VALVE ASSY
NO.1(VSV FOR IACV)
OK
3 INSPECT ECM(SCV 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
SCV (E13 −5) −E01 (E13 −7)9to14V
NG Go to step 4
OK
REPLACE ECM (See page 10− 65 of Pub. No. RM 1018E AVENSIS)