2005 TOYOTA AVENSIS transmission

C90646
(+)
( − )
Shift Solenoid Valve DSL:
05
−588−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
3 INSPECT SHIFT SOLENOID VALVE(DSL)
(a) Remove the shift solenoid valve DSL.
(b) Measure the resistance according to the value(s) in the table below.
Standard:
Tester ConnectionSpecified Condition
20_ C (68 _ F)
Solenoid Connector (DSL) − Solenoid
Body (DSL)11 to 13

(c) Connect positive (+) lead to the terminal of solenoid con-
nector, negative ( −) lead to the solenoid body.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(DSL)
OK
REPAIR OR REPLACE TRANSMISSION WIRE (SEE PAGE 40 −1 6)

05−582− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
DTC P0741TORQUE CONVERTER CLUTCH SOLENOID
PERFORMANCE (SHIFT SOLENOID VALVE
DSL)
SYSTEM DESCRIPTION
The ECM uses the signals from the throttle position sensor, Air−flow meter, turbine (input) speed sensor,
intermediate (counter) shaft speed sensor and crankshaft position sensor to monitor the engagement condi-
tion 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 problems of the shift solenoid valve DSL, valve body and torque con-
verter 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)
SShift solenoid valve DSL remains open or closed
SValve body is blocked
SShift solenoid valve DSL
STorque converter clutch
SAutomatic transaxle (clutch, brake or gear etc.)
SLine pressure is too low
SECM
MONITOR DESCRIPTION
Torque converter lock−up is controlled by the ECM based on speed sensor (NT), speed sensor (NC), engine
rpm, engine load, engine temperature, vehicle speed, transmission temperature, and gear selection. The
ECM determines the lock−up status of the torque converter by comparing the engine rpm (NE) to the input
turbine rpm (NT). The ECM calculates the actual transmission gear by comparing input turbine rpm (NT) to
counter gear rpm (NC). When conditions are appropriate, the ECM requests ”lock−up” by applying control
voltage to shift solenoid DSL. When the DSL is turned on, solenoid DSL applies pressure to the lock−up relay
valve and locks the torque converter clutch.
If the ECM detects no lock−up after lock−up has been requested or if it detects lock−up when it is not re-
quested, the ECM interprets this as a fault in the shift solenoid valve DSL or lock−up system performance.
The ECM will turn on the MIL and store the DTC.
Example:
When any of the following is met, the system judges it as a malfunction.
(a) There is a difference in rotation between before and after torque converters even when the ECM com-
mands lock−up.
(Engine speed is at least 75 rpm greater than input turbine speed.)
(b) There is no difference in rotation between before and after torque converters even when the ECM com-
mands lock−up off.
(The difference between engine speed and input turbine speed is less than 35 rpm.)
05JLJ−01

G26426DSL
Transmission Wire Side:
(Connector Front View):E1
C82158C9 1565
DSL
E 13E 12E 11E10E9
ECM:
05 −584−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
1 CHECK OTHER DTCS OUTPUT(IN ADDITION TO DTC P074 1)
(a) Connect the hand −held tester to the DLC3.
(b) Turn the ignition switch to the ON position and push the hand −held tester main switch 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
Only ”P074 1” is outputA
”P074 1” and other DTCsB
HINT:
If any other codes besides ”P074 1” is output, perform the troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART(SEE PAGE 05 −564)
A
2 INSPECT TRANSMISSION WIRE(DSL)
(a) Disconnect t he t r ansm ission wir e c onnect or f r om t he transaxle.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20_ C (68 _ F)
1 0 − Body ground11 to13

NG Go to step 4
OK
3 CHECK HARNESS AND CONNECTOR(TRANSMISSION WIRE − ECM)
(a) Connect the transmission wire connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20_ C (68 _ F)
E 12 −11 (DSL) − Body ground11 to13

NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK

C90646
(+)
( − )
Shift Solenoid Valve DSL:
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −585
AVENSIS Supplement (RM 1045E)
4 INSPECT SHIFT SOLENOID VALVE(DSL)
(a) Remove the shift solenoid valve DSL.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20_ C (68 _ F)
Solenoid Connector (DSL) − Solenoid
Body (DSL)11 to13

(c) Connect positive (+) lead to the terminal of solenoid con-
nector, negative ( −) lead to the solenoid body.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(DSL)
OK
5 CHECK TRANSMISSION WIRE (SEE PAGE 0 1− 32)
OK:
The connectors and pins are securely installed.
There is no open or short on the wire harness. NG REPAIR OR REPLACE TRANSMISSION WIRE(SEE PAGE 40 −1 6)
OK
6 INSPECT TRANSMISSION VALVE BODY ASSY (See chapter 2 in the problem symptoms table)
(SEE PAGE 05 −545)
OK:
There are no foreign objects on each valve and they operate smoothly. NG REPAIR OR REPLACE TRANSMISSION VALVEBODY ASSY (SEE PAGE 40 −1 9)
OK
7 INSPECT TORQUE CONVERTER CLUTCH ASSY (See Pub. No. RM 1018E,
page 40 −37)
OK:
The torque converter clutch operates normally. NG REPLACE TORQUE CONVERTER CLUTCHASSY
OK
REPAIR AUTOMATIC TRANSAXLE ASSY (SEE PAGE 40 −1)

G31161
THO
E2 BRE12
28 32
7 E1
Electronically Controlled
Transmission Solenoid
E13 O
1
OVECM
E2 THO5V 05−574
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
DTC P0711TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” PERFORMANCE
CIRCUIT DESCRIPTION
The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance
value which is input into the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0711
(A) Both (a) and (b) are detected: (2−trip detection logic)
(a) Intake air and engine coolant temperatures are more than
−10˚C (14_F) at engine start
(b) After normal driving for over 19 min. and 8 km (5 mile) or
more, ATF temp. is less than 10˚C (50_F)
(B) When engine coolant temp. is less than 35˚C (95_F) at
engine start, the ATF temp. is 110˚C (230_F) or more after
17 min. of engine start (2−trip detection logic).
SOpen or short in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
MONITOR DESCRIPTION
The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the
resistance, the ECM determines the ATF temperature and detects an opens or shorts in the ATF temperature
circuit or a fault of the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature
is below 10_C (50_F) after running the vehicle for a certain period, the ECM interprets this as a fault, and
turns on the MIL.
When the ATF temperature is 110_C (230_F) or more after 17 minutes of engine cold start, the ECM also
determines this as a fault, turns on the MIL, and stores the DTC.
WIRING DIAGRAM
05JLG−01

05−576−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
2 CHECK TRANSAXLE FLUID LEVEL
OK:
Automatic transaxle fluid level is correct. NG ADD FLUID
OK
REPLACE TRANSMISSION WIRE (SEE PAGE 40 −1 6)

− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−571
AVENSIS Supplement (RM1045E)
DTC P0710 TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” CIRCUIT
DTC P0712 TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” CIRCUIT LOW INPUT
DTC P0713 TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” CIRCUIT HIGH INPUT
CIRCUIT DESCRIPTION
The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance
value which is input into the ECM.
The ECM applies a voltage to the temperature sensor through ECM terminal THO.
The sensor resistance changes with the transmission fluid temperature. As the temperature becomes high-
er, the sensor resistance decreases.
One terminal of the sensor is grounded so that the sensor resistance decreases and the voltage goes down
as the temperature becomes higher.
The ECM calculates the fluid temperature based on the voltage signal.
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 than156 k

HINT:
Within 0.5 sec., the malfunction switches from (a) to (b) or from
(b) to (a)
SOpen or short in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
P0712ATF temperature sensor resistance is less than 79
for 0.5
sec. or more (1−trip detection logic)SShort in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
P0713
ATF temperature sensor resistance is more than156 k
when
15 minutes or more after the engine start
DTC is detected for 0.5 sec. or more (1−trip detection logic)SOpen in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
MONITOR DESCRIPTION
The automatic transmission fluid (ATF) temperature sensor converts ATF temperature to an electrical resis-
tance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an
opens or shorts in the ATF temperature circuit. If the resistance value of the ATF temperature is less than
79

*1or more than156 k
*2, the ECM interprets this as a fault in the ATF sensor or wiring. The ECM will
turn on the MIL and store the DTC.
*1:150_C (302_F) or more is indicated regardless of the actual ATF temperature.
*2:−40_C(−40_F) is indicated regardless of the actual ATF temperature.
HINT:
The ATF temperature can be checked on the hand−held tester display.
05CVQ−02

G31161
THO
E2 BRE12
28 32
7 E1
Electronically Controlled
Transmission Solenoid
E13 O
1
OVECM
E2 THO5V 05−572
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the hand−held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the hand−held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ”ON” button of the hand−held tester.
(f) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST”.
(g) According to the display on tester, read the ”DATA LIST”.
ItemMeasurement Item/
Range (display)Normal Condition
AT FLUID TEMP
ATF Temp. Sensor Value/
min.:−40_C(−40_F)
max.: 215_C(419_F)
Approx. 80_C(176_F) (After Stall Test)
HINT:
When DTC P0712 is output and hand−held tester output is150_C (302_F), there is a short circuit.
When DTC P0713 is output and hand−held tester output is−40_C(−40_F), there is an open circuit.
Measure the resistance between terminal THO1(THO) and body ground.
Temperature DisplayedMalfunction
−40˚C(−40˚F)Open circuit
150˚C(302˚F) or moreShort circuit