2005 TOYOTA AVENSIS diagram

D30688
ECM
MPX2
MPX1 29
18 E10 11
B8
22 SNOWI14
Integration Relay
8 14
DA B E8
ECT Pattern Select SW
*1: RHD
*2: LHD 4 1 W–B
CH
CF
CA 8
11
6
W–B
IPE10 MPX1
MPX2
*1
*2
B8
(*3) Pattern Select Switch (ECT SNOW Switch)
When the ECT SNOW switch is pushed, the switch contact is made and the ECT SNOW mode is selected.
To cancel the ECT SNOW mode, push the ECT SNOW switch once again. The ECT SNOW mode is automatical-
ly cancelledout when the ignition switch is turned ”OFF”.
*3
Instrument Panel J/B
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–297
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
PATTERN SELECT SWITCH CIRCUIT
CIRCUIT DESCRIPTION
Integration relay receives pattern select switch information, and sends it through the multiplex communica-
tion system to the ECM.
ECT SNOW is the system that operates the throttle motor to control engine output to reduce skidding of the
driving wheels, guarantee takeoff acceleration, driving straightness and turning stability.
WIRING DIAGRAM
05L2N–01

G31165
E1
Electronically Controlled
Transmission Solenoid
R
E12SLECM
15
LG
4
SL+B
CPU
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–289
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P2769 TORQUE CONVERTER CLUTCH SOLENOID
CIRCUIT LOW (SHIFT SOLENOID VALVE SL)
DTC P2770 TORQUE CONVERTER CLUTCH SOLENOID
CIRCUIT HIGH (SHIFT SOLENOID VALVE SL)
CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ”ON” and ”OFF” by signals from the ECM in order to control the hydraulic
pressure operation, the lock–up relay valve, which then the controls operation of the lock–up clutch.
DTC No.DTC Detection ConditionTrouble Area
P2769ECM detects short in solenoid valve SL circuit (0.1 sec.) when
solenoid valve SL is operated (2–trip detection logic)
Short in shift solenoid valve SL circuit

Shift solenoid valve SL

ECM
P2770ECM detects open in solenoid valve SL circuit (0.1 sec.) when
solenoid valve SL is not operated (2–trip detection logic)
Open in shift solenoid valve SL circuit

Shift solenoid valve SL

ECM
MONITOR DESCRIPTION
Based on the signals from the Throttle Position Sensor, the Airflow Meter and the Crankshaft Position Sen-
sor, the ECM sends a signal to the shift solenoid valve SL to regulate the hydraulic pressure and provide
smoother gearshifts. The shift solenoid valve SL responds to commands from the ECM. The valve controls
the lock–up relay valve to perform the torque–converter lock–up function. If the ECM detects an open or
short circuit for shift solenoid valve SL, it will illuminate the MIL.
WIRING DIAGRAM
05CW7–06

G31165
E1
Electronically Controlled
Transmission SolenoidECM
8
E12 SB
7
V
L
SB +B
CPU
–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–283
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0998 SHIFT SOLENOID ”F” CONTROL CIRCUIT
LOW (SHIFT SOLENOID VALVE SB)
DTC P0999 SHIFT SOLENOID ”F” CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE SB)
CIRCUIT DESCRIPTION
Shift solenoid valve SB controls the 2nd brake (B1) and 1st and reverse brake pressures and performs the
1st and 2nd engine brake control.
Fail safe function:

S shift control prohibition.

On activating the fail–safe function during S shift, the driving mode\
turns to the normal D position.
DTC No.DTC Detection ConditionTrouble Area
P0998ECM detects short in solenoid valve SB circuit 2 times when
solenoid valve SB is operated (1–trip detection logic)
Short in shift solenoid valve SB circuit

Shift solenoid valve SB

ECM
P0999ECM detects open in solenoid valve SB circuit 2 times when
solenoid valve SB is not operated (1–trip detection logic)
Open in shift solenoid valve SB circuit

Shift solenoid valve SB

ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OF\
F”. When there is an open or
short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and
stores the DTC. And the ECM performs the fail–safe function and turns the o\
ther shift solenoid valves in good
condition ”ON/OFF” (In case of an open or short circuit, the ECM stops sen\
ding current to the circuit.)
(see page 05–241 ).
WIRING DIAGRAM
05L2M–01

G31165
E1
Electronically Controlled
Transmission SolenoidECM
10
E12 S2
10
B
P
S2 +B
CPU
05–280–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0976 SHIFT SOLENOID ”B” CONTROL CIRCUIT LOW (SHIFT SOLENOID VALVE S2)
DTC P0977 SHIFT SOLENOID ”B” CONTROL CIRCUIT HIGH (SHIFT SOLENOID VALVE S2)
CIRCUIT DESCRIPTION
Shifting from 1st to 4th is performed in combination with ”ON” and ”OFF\
” operation of the shift solenoid valves
S1 and S2 which is controlled by the ECM. If an open or short circuit occu\
rs in either of the shift solenoid
valves, the ECM controls the remaining normal shift solenoid valve to allow the\
vehicle to be operated
smoothly (Fail safe function).
DTC No.DTC Detection ConditionTrouble Area
P0976ECM detects short in solenoid valve S2 circuit 2 times when
solenoid valve S2 is operated (1–trip detection logic)
Short in shift solenoid valve S2 circuit

Shift solenoid valve S2

ECM
P0977ECM detects open in solenoid valve S2 circuit 2 times when
solenoid valve S2 is not operated (1–trip detection logic)
Open in shift solenoid valve S2 circuit

Shift solenoid valve S2

ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OF\
F”. When there is an open or
short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and
stores the DTC. And the ECM performs the fail–safe function and turns the o\
ther shift solenoid valves in good
condition ”ON/OFF” (In case of an open or short circuit, the ECM stops sen\
ding current to the circuit.)
(see page 05–241 ).
WIRING DIAGRAM
05L2L–01

G31165
E1
Electronically Controlled
Transmission SolenoidECM
20
E12 ST
2
Y
R–B
ST +B
CPU
05–274–
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From Februar y, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0787 SHIFT/TIMING SOLENOID LOW (SHIFT SOLENOID VALVE ST)
DTC P0788 SHIFT/TIMING SOLENOID HIGH (SHIFT SOLENOID VALVE ST)
CIRCUIT DESCRIPTION
The shift solenoid valve ST is used for shifting from the 3rd to 4th gear, and from the 4th to 3rd gear. Actuates
solenoid valves ST and SLT in accordance with the signals from the ECM, and guides this output pr\
essure
directly to 4–3 shift timing valve and 3–4 shift timing valve in order to regulate the line pressure that acts on
the B
1 brake and C1 clutch.
DTC No.DTC Detection ConditionTrouble Area
P0787ECM detects short in solenoid valve ST circuit 4 times when
solenoid valve ST is operated (1–trip detection logic)

Short in shift solenoid valve ST circuit

Shift solenoid valve ST

ECM
P0788ECM detects open in solenoid valve ST circuit 4 times when
solenoid valve ST is not operated (1–trip detection logic)
Open in shift solenoid valve ST circuit

Shift solenoid valve ST

ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OF\
F”. When there is an open or
short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and
stores the DTC. And the ECM performs the fail–safe function and turns the o\
ther shift solenoid valves in good
condition ”ON/OFF” (In case of an open or short circuit, the ECM stops sen\
ding current to the circuit.)
(see page 05–241 ).
WIRING DIAGRAM
05CVW–07

G30849
Instrument Panel J/B
S6
Stop Light SW
Engine Room R/BECM
STP
E1019
G–W 7
ID1
B–R 2C
2N 2ASTOP 110 2
22 IJ1
IJ112
21
G–B
B–R
FL MAIN
Battery11
12ALTG–W G–W
2A G–W
G–B
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–261
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0724 BRAKE SWITCH ”B” CIRCUIT HIGH
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling while driving in lock–up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signals to the ECM. Then the ECM cancels the op-
eration of the lock–up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P0724
The stop light switch remains ON even when the vehicle is
driven in a GO (30 km/h) and STOP (3 km/h) fashion 10 times.
(2–trip detection logic).
Short in stop light switch signal circuit

Stop light switch

ECM
MONITOR DESCRIPTION
This DTC indicates that the stop light switch remains on. When the stop light switch remains ON during ”stop
and go” driving, the ECM interprets this as a fault in the stop light switch and the MIL comes on and the ECM
stores the DTC. The vehicle must stop (less than 3 km/h (2 mph)) and go (30 km/h (19 mph) or more) ten
times for two driving cycles in order to detect malfunction.
WIRING DIAGRAM
05KB2–02


C42920C53419
5 V/DIV
0.5 ms/DIV
G31763
ECM
NT+
NT– 26
34 B–O
B 2 1E12
E12 T4
Turbine Speed Sensor
5V
E1 05–258
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
DTC P0717 TURBINE SPEED SENSOR CIRCUIT NO
SIGNAL
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT)
with the vehicle speed sensor signal, the ECM detects the shift timing of the gears and appropriately controls
the engine torque and hydraulic pressure according to various conditions. Thus, providing smooth gear shift.
DTC No.DTC Detection ConditionTrouble Area
P0717
ECM detects conditions (a), (b) and (c) continuity for 5 sec. or
more: (1–trip detection logic)
(a) Vehicle speed: 50 km/h (31 mph) or more
(b) Park/neutral position switch (NSW, R and L) is OFF
(c) Speed sensor (NT): less than 300 rpm
Open or short in transmission revolution sensor NT (speed
sensor NT) circuit

Transmission revolution sensor NT (speed sensor NT)

ECM
Reference (Using an oscilloscope):
Check the waveform between the terminals NT+ and NT–
of the ECM connector.
Standard: Refer to the illustration.
TerminalNT+ – NT–
Tool setting5V/DIV, 0.5ms/DIV
Vehicle conditionVehicle speed 20 km/h (12 mph)
MONITOR DESCRIPTION
The input speed sensor detects the transmission input shaft speed. The ECM determines the gear shift tim-
ing based on a comparison of the input speed sensor (input shaft speed) with the output speed sensor (out-
put shaft speed).
When the output shaft speed is higher then the expected value and the input shaft speed is 300 rpm or less
while running with the shift in the D position, the ECM will conclude that there is malfunction of the input tur-
bine speed sensor (NT). The ECM will illuminate the MIL.
WIRING DIAGRAM
05KB1–02

G31390
THO
E2 BRE12
28 32
6 E1
Electronically Controlled
Transmission Solenoid
E13 O
1
OVECM
E2OT
– DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E) (From February, 2004)05–253
AVENSIS REPAIR MANUAL SUPPLEMENT
(RM1098E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
Using the Intelligent Tester II Data List allows switch, sensor, actuator and other item values to be read with-
out removing any parts. Reading the Data List early in troubleshooting is one way to shorten labor time.
NOTICE:
In the table below, the values listed under ”Normal Condition” are reference values. Do not depend
solely on these reference values when deciding whether a part is faulty or not.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the Intelligent Tester II to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Turn on the tester.
(f) Select the item ”Enter / Power train / Engine and ECT / Data List”.
(g) Follow the instructions on the tester and read the Data List.
ItemMeasurement Item/
Range (display)Normal Condition
A/T Oil Temperature 1
ATF Temp. Sensor Value/
min.: –40C (–40F)
max.: 215C (419F)
After Stall Test;
Approx. 80C (176F)

Equal to ambient temperature when cold soak
HINT:
When DTC P0712 is output and Intelligent Tester II output is 150C (302F) or more, there is a short circuit.
When DTC P0713 is output and Intelligent Tester II output is –40C (–40F), there is an open circuit.
Measure the resistance between terminal THO (OT) and body ground.
Temperature DisplayedMalfunction
–40
C (–40
F)Open circuit
150
 (302
  Short circuit
HINT:
If a circuit related to the ATF temperature sensor becomes open, P0713 is immediately set (in 0.5 second).
When P0713 is set, P0711 cannot be detected.
It is not necessary to inspect the circuit when P0711 is set.