2005 TOYOTA AVENSIS clutch

± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±955
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT TORQUE CONVERTER CLUTCH ASSY
NG REPLACE TORQUE CONVERTER CLUTCH
ASSY
OK
REPAIR OR REPLACE AUTOMATIC TRANSAXLE ASSY

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

C54864
DSL

C91565
DSLE1
05±948± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0741 TORQUE CONVERTER CLUTCH SOLENOID
PERFORMANCE (SHIFT SOLENOID VALVE
SL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, Air±flow meter and crankshaft position sensor
to monitor the engagement condition of the lock±up clutch.
Then the ECM compares the engagement condition of the lock±up clutch with the lock±up schedule in the
ECM memory to detect a mechanical trouble of the shift solenoid valve DSL, valve body and torque converter
clutch.
DTC No.DTC Detection ConditionTrouble Area
P0741
Lock±up does not occur when driving in lock±up range (normal
driving at 80 km/h 50 mph), or lock±up remains ON in lock±
up OFF range (2 trip detection logic)
Shift solenoid valve DSL is stuck open or closed

Valve body blocked or stuck

Shift solenoid valve DSL

Lock±up clutch
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(DSL)
(a) Disconnect the transmission wire connector connector
from the transaxle.
(b) Measure the resistance between the terminal 3 and the
body ground.
OK:
Resistance: 11 to 13 at 20C (68F)
NG Go to step 3
OK
2 CHECK HARNESS AND CONNECTOR(TRANSMISSIONWIRE ± ECM)
(a) Connect the transmission wire connector to the transaxle.
(b) Disconnect the ECM connector.
(c) Measure the resistance between terminals DSL and E1.
OK:
Resistance: 11 to 13 at 20C (68F)
OK Go to step 3
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
05C9B±01

05±950± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)
5 INSPECT TRANSMISSION VALVE BODY ASSY
NG REPAIR OR REPLACE TRANSMISSION VALVE
BODY ASSY
OK
6 INSPECT TORQUE CONVERTER CLUTCH ASSY
NG REPLACE TORQUE CONVERTER CLUTCH
ASSY
OK
REPAIR AUTOMATIC TRANSAXLE ASSY

±
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

±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±937
AVENSIS REPAIR MANUAL (RM1018E)
Chapter 3: Off±vehicle Repair
(
: U241E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM840U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward range or reverse range
1. Front and rear planetary gear
2. U/D planetary gear
3. U/D one±way clutch (F
2)
4. Forward clutch (C
1)
5. U/D brake (B
3)










Vehicle does not move in R range
1. Front and rear planetary gear unit
2. U/D planetary gear
3. Direct clutch (C
2)
4. U/D brake (C
3)
5. 1st and reverse brake (B
2)










No up±shift (1st
2nd)1. No.1 one±way clutch (F1)
2. 2nd brake (B
1)




No up±shift (2nd
3rd)Direct clutch (C2)

No up±shift (3rd
O/D)U/D clutch (C3)

No lock±up or No lock±up offTorque converter clutch40±37
Harsh engagement (N
D)
1. Forward clutch (C1)
2. U/D one±way clutch (F
2)
3. No.1 one±way clutch (F
1)






Harsh engagement (N
R)1. Direct clutch (C2)
2. 1st and reverse brake (B
2)




Harsh engagement (Lock±up)Torque converter clutch40±37
Slip or shudder (Forward position: After warm±up)
1. Torque converter clutch
2. Forward clutch (C
1)
3. Direct clutch (C
2)
4. U/D brake (C
3)
5. No.1 one±way clutch (F
1)
6. U/D one±way clutch (F
2)
40±37









Slip or shudder (R range)1. Direct clutch (C2)
2. 1st and reverse brake (B
2)




Slip or shudder (1st)No.1 one±way clutch (F1)

Slip or shudder (2nd)1. U/D one±way clutch (F2)
2. 2nd brake (B
1)




Slip or shudder (3rd)Direct clutch (C2)

Slip or shudder (O/D)U/D clutch (C3)

No engine braking (1st ± 3rd: D range)U/D brake (B3)

No engine braking (1st: L range)1st and reverse brake (B2)

No engine braking (2nd: 2 range)2nd brake (B1)

Poor acceleration (All range)1. Torque converter clutch
2. U/D planetary gear40±37

Poor acceleration (O/D)1. U/D clutch (C3)
2. U/D planetary gear



Large shift shock or engine stalls when starting off or stoppingTorque converter clutch40±37

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



0567Q±07
05±996±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U341E)
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 light up
DTC No.
(See Page)Detection ItemTrouble AreaMIL *1Memory
P0500
(05±98)Vehicle Speed Sensor Malfunc-
tion
 Combination meter
 Open or short in speed sensor circuit
 Speed sensor
 ECM


P0710
(05±1003)Transmission Fluid Temperature
Sensor Circuit Malfunction
(ATF Temperature Sensor)
 Open or short in ATF temp. sensor circuit


P0711
(05±1005)
Transmission Fluid Temperature
Sensor Circuit Range/Perfor-
mance
(ATF Temperature Sensor)
Oen or short in AT F tem. sensor circuit
 Transmission wire (ATF temperature sensor)
 ECM


P0750
(05±1007)Shift Solenoid ºAº Malfunction
(Shift Solenoid Valve S1) Shift solenoid valve S1 is stuck open or closed
 Valve body is blocked up or stuck
 Automatic transaxle (clutch, brake or gear etc.)


P0753
(05±1010)Shift Solenoid ºAº Electrical
(Shift Solenoid Valve S1) Open or short in shift solenoid valve S1 circuit
 Shift solenoid valve S1
 ECM


P0755
(05±1007)Shift Solenoid ºBº Malfunction
(Shift Solenoid Valve S2) Shift solenoid valve S2 is stuck open or closed
 Valve body is blocked up or stuck
 Automatic transaxle (clutch, brake or gear etc.)


P0758
(05±1010)Shift Solenoid ºBº Electrical
(Shift Solenoid Valve S2) Open or short in shift solenoid valve S2 circuit
 Shift solenoid valve S2
 ECM


P0770
(05±1013)Shift Solenoid ºEº Malfunction
(Shift Solenoid Valve SL)
 Shift solenoid valve SL is stuck open or closed
 Valve body blocked or stuck
 Shift solenoid valve SL
 Torque converter clutch
 Automatic transaxle (clutch, brake or gear etc.)


P0773
(05±1015)Shift Solenoid ºEº Electrical
(Shift Solenoid Valve SL) Open or short in shift solenoid valve SL circuit
 Shift solenoid valve SL
 ECM


P1520
(05±1018)Stop Light Switch Circuit
 Open or short in stop light switch circuit
 Stop lamp switch assy
 ECM


P1725
(05±1019)NT Revolution Sensor Circuit
Malfunction
(Input Turbine Speed Sensor) Open or short in speed sensor (NT) circuit
 Speed sensor (NT)
 ECM


P1760
(05±1021)Linear Solenoid for Line Pres-
sure Control Circuit Malfunction
(Shift Solenoid Valve SLT) Open or short in shift solenoid valve SLT circuit
 Shift solenoid valve SLT
 ECM


P1780
(05±1024)Park/Neutral Position Switch
Malfunction Short in park/neutral position switch circuit
 Park/Neutral position switch assy
 ECM


P1790
(05±1027)ST Solenoid Circuit Malfunction
(Shift Solenoid Valve ST) Open or short in shift solenoid valve ST circuit
 Shift solenoid valve ST
 ECM


P1798
(05±1030)SB Solenoid Circuit Malfunction
(Shift Solenoid Valve SB) Open or short in shift solenoid valve SB circuit
 Shift solenoid valve SB
 ECM