TOYOTA AVENSIS 2005 Service Repair Manual

G31165
E1
Electronically Controlled
Transmission Solenoid
L−B
E12DSLECM
11
SB
10
DSL+B
CPU
05−586− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
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 hydrau-
lic 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
SOpen or short in shift solenoid valve DSL circuit
SShift solenoid valve DSL
SECM
MONITOR DESCRIPTION
Torque converter lock−up is controlled by the ECM based on engine rpm, engine load, engine temperature,
vehicle speed, transmission temperature, and shift range 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 opened, solenoid DSL applies pressure to the lock−up relay valve and locks the torque converter
clutch. If the ECM detects an open or short in the DSL solenoid circuit, the ECM interprets this as a fault in
the DSL solenoid or circuit. The ECM will turn on the MIL and store the DTC.
WIRING DIAGRAM
05CW7−02

G26426
Transmission Wire Side:
(Connector Front View):DSL
E1
C82158C91565
DSL
E13E12E11E10E9
ECM:
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−587
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
1 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)
10 − Body ground11 to 13

NG Go to step 3
OK
2 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)
E12 − 11 (DSL) − Body ground11 to 13

NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
REPLACE ECM (SEE PAGE 10− 29)

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

G23400G29214
Accelerator Pedal
Opening Angle
Lock−up OFF
Lock−up ON

time Engine Speed
Accelerator Pedal
Fully Released
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−583
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
HINT:
Performing the ACTIVE TEST using the hand−held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one method
to shorten labor time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(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 / ACTIVE TEST”.
(g) According to the display on tester, perform the ”ACTIVE TEST”.
ItemTest DetailsDiagnostic Note
LOCK UP
[Test Details]
Control the shift solenoid DSL to set the automatic transaxle to the
lock−up condition.
[Vehicle Condition]
Vehicle Speed: 60 km/h (37 mph) or more
Possible to check the DSL opera-
tion.
HINT:
SThis test can be conducted when the vehicle speed is 60 km/h (37 mph) or more.
SThis test can be conducted with the 5th gear.
(h) Lightly depress the accelerator pedal and check that the engine speed does not change abruptly.
HINT:
SWhen changing the accelerator pedal opening angle while driving, if the engine speed does not
change, lock−up is on.
SSlowly release, but not fully, the accelerator pedal in order to decelerate. (Fully releasing the pedal will
close the throttle valve and lock−up may be turned off.)

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)

05−580−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
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).S Short in stop light switch signal circuit
S Stop light switch
S 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
See page 05 −1 85.
05JLI −01

E65594
Free Pushed in2
3
4 1
G26289
STP(+)
E
13E 12E 11E10E9
ECM:
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −58 1
AVENSIS Supplement (RM 1045E)
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) Turn the ignition switch off.
(b) Connect the hand −held tester to the DLC3.
(c) Turn the ignition switch to the ON position.
(d) Push the ”ON” button of the hand −held tester.
(e) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST”.
(f) According to the display on tester, read the ”DATA LIST”.
ItemMeasurement Item/
Range (display)Normal Condition
STOP LIGHT SWStop light SW Status/ ON or OFFS Brake Pedal is depressed: ON
S Brake Pedal is released: OFF
1 INSPECT STOP LAMP SWITCH ASSY
(a) Remove the stop lamp switch assy.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Switch positionTester ConnectionSpecified Condition
Switch pin free1−2Below 1

Switch pin pushed in10k
or higher
Switch pin free3− 410k
or higher
Switch pin pushed inBelow 1

NG REPLACE STOP LAMP SWITCH ASSY
OK
2 CHECK HARNESS AND CONNECTOR(STOP LAMP SWITCH ASSY − ECM)
(a) Install the stop lamp switch assy.
(b) Measure the voltage according to the value(s) in the table
below when the brake pedal is depressed and released.
Standard:
ConditionTester ConnectionSpecified Condition
Brake pedal is depressedE10 −1 9 (STP) −
Body ground1 0to 14V
Brake pedal is releasedBelow 1 V
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
REPLACE ECM (SEE PAGE 10− 29)

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