2005 TOYOTA AVENSIS transmission

C54864
ST
C95812
E1ST
05±1028± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(ST)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance between terminal ST and body
ground.
OK:
Resistance: 11 to 15
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 to the transaxle.
(b) Disconnect the ECM connector.
(c) Measure the resistance between terminals ST and E1.
OK:
Resistance: 11 to 15
at 20
C (68
F)
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM

D09034
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1029
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT SHIFT SOLENOID VALVE(ST)
(a) Remove the shift solenoid valve ST.
(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(ST)
OK
REPAIR OR REPLACE TRANSMISSION WIRE

D26542
ECM
SLT+
SLT± E1317
16 P±L
P SLT+
SLT± E1
ECT Solenoid
E13 G
GR3
8
D25234
SLT+
SLT±
05±1022± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(SLT)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure resistance between terminals SLT+ and SLT±.
OK:
Resistance: 5.0 to 5.6 at 20
C (68
F)
(c) Check continuity between the wire harness side connec-
tors.
OK:
Standard (Check for short):
SymbolsSpecified condition
SLT+ ± Body groundNo continuitySLT± ± Body groundNo continuity
NG Go to step 3
OK

C95813SLT+
SLT±
D25466
12
12
(+)
(±)
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1023
AVENSIS REPAIR MANUAL (RM1018E)
2 CHECK HARNESS AND CONNECTOR(TRANSMISSION WIRE±ECM)
(a) Connect the transmission wire connector to the transaxle.
(b) Disconnect the ECM connector.
(c) Measure the resistance between terminals SLT+ and
SLT± of ECM connector.
OK:
Resistance: 5.0 to 5.6
at 20
C (68
F)
(d) Check the continuity between the wire harness side con-
nectors.
OK:
Standard (Check for short):
SymbolsSpecified condition
SLT+ ± Body groundNo continuitySLT± ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM
3 INSPECT SHIFT SOLENOID VALVE(SLT)
(a) Remove the shift solenoid valve SLT.
(b) Measure the resistance between terminals.
OK:
Resistance: 5.0 to 5.6
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(SLT)
OK
REPAIR OR REPLACE TRANSMISSION WIRE

C54864
SL
C95812SL E1
05±1016± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(SL)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance between terminal SL and the
body ground.
OK:
Resistance: 11 to 15 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 to the transaxle.
(b) Disconnect the ECM connector.
(c) Measure the resistance between terminals SL and E1.
OK:
Resistance: 11 to 15 at 20
C (68
F)
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM

D30680
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1017
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT SHIFT SOLENOID VALVE(SL)
(a) Remove the shift solenoid valve SL.
(b) Measure the resistance between terminal SL of shift sole-
noid valve 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
valve connector and the negative (±) lead to the solenoid
valve body.
OK:
The solenoid valve makes an operating noise.
OK REPAIR OR REPLACE TRANSMISSION WIRE
NG
REPLACE SHIFT SOLENOID VALVE(SL)

D30680
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1013
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0770 SHIFT SOLENOID ºEº MALFUNCTION
(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 mechanical trouble of the shift solenoid valve SL, valve body and torque converter
clutch or automatic transaxle (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0770

Lock±up does not occur when driving in the lock±up range
(normal driving at 80 km/h
50 mph), or lock±up remains ON
in the lock±up OFF range.
(2±trip detection logic)

When lock±up is ON, clutch or brake slips or gear is broken.
(2±trip detection logic)
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.)
INSPECTION PROCEDURE
1 INSPECT SHIFT SOLENOID VALVE(SL)
(a) Remove the shift solenoid valve SL.
(b) Measure the resistance between terminal SL of shift sole-
noid valve and the solenoid valve body.
OK:
Resistance: 11 to 15
at 20C (68F)
(c) Connect the positive (+) lead to the terminal of solenoid
valve connector and the negative (±) lead to the solenoid
valve body.
OK:
The solenoid valve makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(SL)
OK
2 INSPECT TRANSMISSION VALVE BODY ASSY(See chapter 2 in the problem
symptoms table)
NG REPAIR OR REPLACE TRANSMISSION VALVE
BODY ASSY
OK
05C8J±01

G22782
5
10P±L
PE1215
14S1
S2 E1
ECT Solenoid
S1
S2 W
BECM
E12
D25234
S1
S2
C95812
S1 S2
E1
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1011
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(S1/S2)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance between terminal S1/S2 of trans-
mission wire connector and body ground.
OK:
Resistance: 11 to 15 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 to the transaxle.
(b) Disconnect the ECM connector.
(c) Measure the resistance between terminals.
OK:
Resistance:
S1 ± E1: 11 to 15 at 20
C (68
F)
S2 ± E1: 11 to 15 at 20
C (68
F)
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM