2005 TOYOTA AVENSIS Circuit

D26539
E1
ECT SolenoidECM
11
DSL E12 L±B
3 DSL G
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±951
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0743 TORQUE CONVERTER CLUTCH CIRCUIT
ELECTRICAL (SHIFT SOLENOID VALVE
DSL)
CIRCUIT DESCRIPTION
The shift solenoid valve DSL 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
P0743
Either (a) or (b) is detected at 1 time:
(2 trip detection logic)
(a) Solenoid resistance is 8  or less short circuit when sole-
noid is energized
(b) Solenoid resistance is 100 k or more open circuit when
solenoid is not energized

Open or short in shift solenoid valve DSL circuit

Shift solenoid valve DSL

ECM
Fail safe function:
If the ECM detects a malfunction, it turns the shift solenoid valve DSL OFF.
WIRING DIAGRAM
05C9C±01

±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))05±947
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0724BRAKE SWITCH ºBº CIRCUIT HIGH
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling while dr\
iving in lock±up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends signals to the ECM. Then\
the ECM cancels the opera-
tion of the lock±up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P0724The stop light switch does not turn off even once the vehicle is
driven (2±trip detection logic).
Short in stop light switch signal circuit

Stop light switch

ECM
WIRING DIAGRAM
See page 05±475.
INSPECTION PROCEDURE
1 INSPECT STOP LAMP SWITCH ASSY
NG REPLACE STOP LAMP SWITCH ASSY
OK
2 CHECK HARNESS AND CONNECTOR(STOP LAMP SWITCH ASSY ± ECM)
NG REPAIR OR REPLACE HARNESS OR CONNECTOR
OK
REPAIR OR REPLACE ECM
05C9A±01

D26540
T4
Turbine Speed SensorECM
NT+ E1227
B±O
2
B
NT± E1235 1
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±945
AVENSIS REPAIR MANUAL (RM1018E)
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 counter gear speed sensor signal (NC), the ECM detects the shift timing of the gears and appropri-
ately controls the engine torque and hydraulic pressure according to various conditions. Thus smooth gear
shifting is performed.
DTC No.DTC Detection ConditionTrouble Area
P0717
ECM detects conditions (a), (b), (c) and (d) continuity for 5 sec.
or more: (1 trip detection logic)
(a) Vehicle speed: 50 km/h (20 mph) or more
(b) 2nd, 3rd or O/D gear
(c) Solenoid valves and park/neutral position switch are normal
(d) NT < 300 rpm

Open or short in speed sensor (NT) circuit

Speed sensor (NT)

ECM
WIRING DIAGRAM
05C99±01

C54864
THOE2
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))05±943
AVENSIS REPAIR MANUAL (RM1018E)
DTCP0711TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº PERFORMANCE
CIRCUIT DESCRIPTION
The ATF temperature sensor converts the fluid temperature into a resistance v\
alue which is input into the
ECM.
DTC No.DTC Detection ConditionTrouble Area
P0711
Both (a) and (b) are detected: (2±trip detection logic)
(a)After 12 sec. of engine start, temp. of atmosphere and that
of engine coolant is more than ±10
C
(b)After normal driving for over 20 min. and 10 km, ATF temp.
is less than 10
C

Open or short in ATF temperature sensor circuit

ATF temperature sensor

ECM
WIRING DIAGRAM
See page 05±941.
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(ATF TEMPERATURE SENSOR)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance between terminals THO and E2. OK:
Temperature: C ( F)Resistance: k

10 (50)6.4
110 (230)0.2
(c) Measure the resistance between body ground and that
THO as well as E2 of the transmission wire connector.
OK:
Resistance: 1M
or higher
NG REPAIR OR REPLACE TRANSMISSION WIRE
OK
05C98±01

D26545
E1
ECT Solenoid
ECM
28
E2 E13 6
32
THO E12 BR
V 1 E2
THO O
O
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±941
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0710 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT
DTC P0712 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT LOW INPUT
DTC P0713 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT HIGH INPUT
CIRCUIT DESCRIPTION
The ATF temperature sensor converts the fluid temperature into a resistance value which is input into the
ECM.
DTC No.DTC Detection ConditionTrouble Area
P0710
(a) and (b) is detected momentary within 0.5 sec. when neither
P0712 or P0713 is not detected (1±trip detection logic)
(a) ATF temperature sensor resistance is less than 79 
(b) ATF temperature sensor resistance is more than 156 k
HINT:
Wthin 0.5 sec. the malfunction switches from (a) to (b) or from
(b) to (a)

Open or short in ATF temperature sensor circuit

ATF temperature sensor
P0712ATF temperature sensor resistance is less than 79 for 0.5
sec. or more (1±trip detection logic)
ECM
P0713
DTC is detected for 0.5 sec. or more (1±trip detection logic)
ATF temperature sensor resistance is more than 156 kafter
started engine for 15 minutes or more
WIRING DIAGRAM
05C97±01

05±938± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0705 TRANSMISSION RANGE SENSOR CIRCUIT
MALFUNCTION (PRNDL INPUT)
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever position and sends signals to the ECM.
DTC No.DTC Detecting ConditionTrouble Area
DTC is detected for 500 msec. or more (2±trip detection logic).

2 or more switches are ON simultaneously for P, R, N and D
position.
Sh t i k/ t l iti it h i it
P0705When any of following conditions for 500 msec. or more in the
S position (2±trip detection logic).
(a) P position input signal is ON.
(b) N position input signal is ON.
(c) R position input signal is ON.
Short in park/neutral position switch circuit

Park/neutral position switch assy

ECM
05C96±01

0567W±12
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))05±935
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
HINT:
If a normal code is displayed during the DTC check but the trouble still o\
ccurs, check the circuits for each
symptom in the order given in the charts on the following pages and proceed to \
the page given for trouble-
shooting.
The Matrix Chart is divided into 3 chapters.

If the instruction ºProceed to next circuit inspection shown on matri\
x chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still occurs even though there are no abnormalities in any of the other circuits, then ch\
eck
and replace the ECM.
CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
SymptomSuspect AreaSee page
No up±shift (A particular gear, from 1st to O/D gear, is not up±
shifted)ECM01±32
No down±shift (A particular gear, from O/D to 1st gear, is not
down±shifted)ECM01±32
No lock±up or No lock±up off
1. Stop light switch circuit
2. Engine coolant temp. sensor circuit
3. Throttle position sensor circuit
4. ECM05±947
05±309
05±309
01±32
Shift point too high or too lowECM01±32
No gear change by shifting into º+º or º±º while the shif\
t lever is in
the Sposition1. Transmission control switch circuit
2. ECM05±97201±32
Up±shift to O/D from 3rd while engine is cold
1. Engine coolant temp. sensor circuit
2. ATF temp. sensor circuit
3. ECM05±309
05±941
05±94301±32
Harsh engagement (N
D)ECM01±32
Harsh engagement (Lock±up)ECM01±32
Harsh engagement (Any driving range)ECM01±32
Poor accelerationECM01±32
Engine stalls when starting off or stoppingECM01±32
No kick±down1. Kick±down switch circuit
2. ECM05±970
01±32

0567Q±09
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FSE))05±931
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If a DTC is displayed during the DTC check, check the circuit listed in th\
e table below and proceed to the
page given.
*
1 : ± ... MIL does not light /
... MIL light up
DTC No.
(See Page)Detection ItemTrouble AreaMIL *Memory
P0500
(05±453 )Vehicle Speed Sensor ºAº
 Combination meter
 Open or short in vehicle speed sensor circuit
 Vehicle speed sensor
 ECM


P0705
(05±938)Transmission Range Sensor Cir-
cuit Malfunction (PRNDL Input) Short in park/neutral position switch circuit
 Park/neutral position switch
 ECM


P0710
(05±941)Transmission Fluid Temperature
Sensor ºAº Circuit

P0711
(05±943)Transmission Fluid Temperature
Sensor ºAº Performance Open or short in ATF temperature sensor circuit
AT F t t


P0712
(05±941)Transmission Fluid Temperature
Sensor ºAº Circuit Low Input ATF temperature sensor
 ECM


P0713
(05±941)Transmission Fluid Temperature
Sensor ºAº Circuit High Input

P0717
(05±945)Turbine Speed Sensor Circuit No
Signal
 Open or short in speed sensor (NT) circuit
 Speed sensor (NT)
 ECM
 Automatic transaxle assembly


P0724
(05±947)Brake Switch ºBº Circuit High
 Short in stop light switch circuit
 Stop light switch
 ECM


P0741
(05±948)Torque Converter Clutch Sole-
noid Perfomance
(Shift Solenoid Valve DSL) Shift solenoid valve DSL is stuck open or closed
 Valve body is blocked up or stuck
 Shift solenoid valve DSL
 ECM


P0743
(05±951)Torque Converter Clutch Circuit
Electrical
(Shift Solenoid Valve DSL) Open or short in shift solenoid valve DSL circuit
 Shift solenoid valve DSL
 ECM


P0746
(05±954)Pressure Control Solenoid ºAº
Performance
(Shift Solenoid Valve SL1) Shift solenoid valve SL1 is stuck open or closed
 Valve body is blocked up or stuck
 Shift solenoid valve SL1
 ECM


P0748
(05±956)Pressure Control Solenoid ºAº
Electrical
(Shift Solenoid Valve SL1) Open or short in shift solenoid valve SL1 circuit
 Shift solenoid valve SL1
 ECM


P0766
(05±962)Shift Solenoid ºDº Performance
(Shift Solenoid Valve S4)
 Shift solenoid valve S4 is stuck open or closed
 Valve body is blocked up or stuck
 Shift solenoid valve S4
 ECM


P0776
(05±963)Pressure Control Solenoid ºBº
Performance
(Shift Solenoid Valve SL2) Shift solenoid valve SL2 is stuck open or closed
 Valve body is blocked up or stuck
 Shift solenoid valve SL2
 ECM