TOYOTA AVENSIS 2005 Service Repair Manual

D25466
12
12
(+)
(±)
D25467
(+) (±)
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±961
AVENSIS REPAIR MANUAL (RM1018E)
4 INSPECT SHIFT SOLENOID VALVE(SL2)
(a) Remove the shift solenoid valve SL2.
(b) Measure the resistance between terminals of the shift so-
lenoid valve SL2.
OK:
Resistance: 5.1 to 5.5
at 20
C (68
F)
(c) Connect the positive (+) lead with a 21 W bulb to terminal
2 and the negative (±) lead to terminal 1 of the solenoid
valve connector, then check the movement of the sole-
noid valve.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(SL2)
OK
REPAIR OR REPLACE TRANSMISSION WIRE
5 INSPECT SHIFT SOLENOID VALVE(S4)
(a) Remove the shift solenoid valve S4.
(b) Measure the resistance between the solenoid connector
and the solenoid valve body.
OK:
Resistance: 11 to 15
at 20
C (68
F)
(c) Connect the positive (+) lead to the terminal of solenoid
connector and the negative (±) lead to the solenoid valve
body.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(S4)
OK
REPAIR OR REPLACE TRANSMISSION WIRE

D25466
12
12
(+)
(±)
05±954± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0746 PRESSURE CONTROL SOLENOID ºAº
PERFORMANCE (SHIFT SOLENOID VALVE
SL1)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position (1st, 2nd, 3rd or O/D
gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
troubles of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0746The gear required by the ECM does not match the actual gear
when driving (2±trip detection logic)
Shift solenoid valve SL1 is stuck open or closed

Valve body is blocked up or stuck

Automatic transaxle (clutch, brake or gear etc.)
INSPECTION PROCEDURE
1 INSPECT SHIFT SOLENOID VALVE(SL1)
(a) Remove the shift solenoid valve SL1.
(b) Measure the resistance between terminals of the shift so-
lenoid valve SL1.
OK:
Resistance: 5.0 to 5.6
at 20C (68F)
(c) Connect the positive (+) lead with a 21 W bulb to terminal
2 and the negative (±) lead to terminal 1 of the solenoid
valve connector, then check the movement of the sole-
noid valve.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(SL1)
OK
2 INSPECT TRANSMISSION VALVE BODY ASSY
NG REPAIR OR REPLACE TRANSMISSION VALVE
BODY ASSY
OK
05C9D±01

± 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±952± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(DSL)
(a) Disconnect the solenoid connector from the transaxle.
(b) Measure the resistance between the terminal 3 and the
body ground.
OK:
Resistance: 11 to 13 at 20
C (68
F)
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 between terminal DSL and E1.
OK:
Resistance: 11 to 13 at 20
C (68
F)
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM




D03728
(+)
(±)
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±953
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT SHIFT SOLENOID VALVE(DSL)
(a) Remove the shift solenoid valve DSL.
(b) Measure the resistance between the terminals DSL of
shift solenoid valve and the solenoid valve body.
OK:
Resistance: 11 to 13
at 20
C (68
F)
(c) Connect the positive (+) lead to the terminal of solenoid
connector and the negative (±) lead to the solenoid valve
body.
OK:
The solenoid valve makes operation noise.
NG REPLACE SHIFT SOLENOID VALVE(DSL)
OK
REPAIR OR REPLACE TRANSMISSION WIRE

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


D30707
(±)(+)
(±)(+)



D03728
(±)(+)
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±949
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT SHIFT SOLENOID VALVE(DSL)
(a) Remove the shift solenoid valve DSL.
(b) Applying 490 kPa (5 kgf/cm
2, 71 psi) of compressed air,
check that the solenoid valve does not leak the air.
OK:
Solenoid valve does not leak air.
(c) When battery voltage is supplied to the shift solenoid
valve, check that the valve opens.
OK:
Solenoid valve opens.
(d) Measure the resistance between the terminal DSL of shift
solenoid valve DSL and the solenoid body.
OK:
Resistance: 11 to 13
at 20
C (68
F)
(e) Connect the positive (+) lead to the terminal of solenoid
connector and the negative (±) lead to the solenoid body.
OK:
The solenoid valve makes operation noise.
NG REPLACE SHIFT SOLENOID VALVE(DSL)
OK
4 CHECK TRANSMISSION WIRE
NG REPAIR OR REPLACE TRANSMISSION WIRE
OK

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