TOYOTA AVENSIS 2005 Service Repair Manual

C58536
1
2
Sensor Side:
(Connector Front View):
C5
C82158C91565
NC+
NC −
E13E12E11E10E9
ECM:
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−609
AVENSIS Supplement (RM1045E)
2 INSPECT SPEED SENSOR(NC)
(a) Disconnect the speed sensor connector from the trans-
axle.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20 _ C (68 _ F)
1 − 2560 to 680

NG REPLACE SPEED SENSOR(NC)
OK
3 CHECK HARNESS AND CONNECTOR(SPEED SENSOR − ECM)
(a) Connect the speed sensor 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 − 26 (NC+) − E12 − 34 (NC −)560 to 680

(d) Measure the resistance according to the value(s) in the
table below.
Standard (Check for short):
Tester ConnectionSpecified Condition
E12− 26 (NC+) − Body ground10 k
or higher
E12 − 34 (NC −)− Body ground
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
REPLACE ECM (SEE PAGE 10− 29)

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −60 1
AVENSIS Supplement (RM 1045E)
DTC P0776 PRESSURE CONTROL SOLENOID ”B”
PERFORMANCE (SHIFT SOLENOID VALVE
SL2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position ( 1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0776The gear required by the ECM does not match the actual gear
when driving (2 −trip detection logic)
S Shift solenoid valve SL2 remains open or closed
S Valve body is blocked
S Shift solenoid valve SL2
S Automatic transaxle (clutch, brake or gear etc.)
S ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position ( 1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and
the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
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) 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 / ACTIVE TEST / SHIFT”.
(f) According to the display on tester, perform the ”ACTIVE TEST”.
HINT:
While driving, the shift position can be forcibly changed with the hand −held tester.
Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you
to confirm the problem (see page 05 −560).
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (3 1mph)
[Others]
S Press ”
” button: Shift up
S Press ” ” button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
SThis test can be conducted when the vehicle speed is 50 km/h (3 1mph) or less.
SThe shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand −held
tester.
05CVZ −02

G20767
2
1
(+)
( − )
2
1
Shift Solenoid Valve SL2:
05
−602−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
1 CHECK OTHER DTCS OUTPUT(IN ADDITION TO DTC P0776)
(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 ”P0776” is outputA
”P0776” and other DTCsB
HINT:
If any other codes besides ”P0776” is output, perform the troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART(SEE PAGE 05 −564)
A
2 INSPECT SHIFT SOLENOID VALVE(SL2)
(a) Remove the shift solenoid valve SL2.
(b) Measure the resistance according to the value(s) in the table below.
Standard:
Tester ConnectionSpecified Condition
20_C (68 _F)
1− 25.0 to 5.6 
(c) Connect the positive (+) lead with a 2 1W bulb to terminal
2 and the negative ( −) lead to terminal 1of the solenoid
valve connector, then check the movement of the valve.
OK:
The solenoid makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(SL2)
OK

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −603
AVENSIS Supplement (RM 1045E)
3 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
4 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 OR REPLACE AUTOMATIC TRANSAXLE ASSY (SEE PAGE 40 −1)

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −595
AVENSIS Supplement (RM 1045E)
DTC P0766 SHIFT SOLENOID ”D” PERFORMANCE
(SHIFT SOLENOID VALVE S4)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor to detect the actual gear position ( 1st, 2nd, 3rd, 4th
or 5th gear).
Then the ECM compares the actual gear with the shift schedule in the ECM memory to detect mechanical
problems of the shift solenoid valves and valve body.
DTC No.DTC Detecting ConditionTrouble Area
P0766The gear required by the ECM does not match the actual gear
when driving (2 −trip detection logic)
S Shift solenoid valve S4 remains open or closed
S Valve body is blocked
S Shift solenoid valve S4
S Automatic transaxle (clutch, brake or gear etc.)
S ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. According to the input shaft
revolution, intermediate (counter) shaft revolution and output shaft revolution, the ECM detects the actual
gear position ( 1st, 2nd, 3rd, 4th or 5th gear position). When the gear position commanded by the ECM and
the actual gear position are not same, the ECM illuminates the MIL and stores the DTC.
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) 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 / ACTIVE TEST / SHIFT”.
(f) According to the display on tester, perform the ”ACTIVE TEST”.
HINT:
While driving, the shift position can be forcibly changed with the hand −held tester.
Comparing the shift position commanded by the ACTIVE TEST with the actual shift position enables you
to confirm the problem (see page 05 −560).
ItemTest DetailsDiagnostic Note
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift position by your-
self.
[Vehicle Condition]
Less than 50 km/h (3 1mph)
[Others]
S Press ”
” button: Shift up
S Press ” ” button: Shift down
Possible to check the operation of
the shift solenoid valves.
HINT:
SThis test can be conducted when the vehicle speed is 50 km/h (3 1mph) or less.
SThe shift position commanded by the ECM is shown in the DATA LIST/SHIFT display on the hand −held
tester.
05CVX −03

C90639
(+)
( − )
Shift Solenoid Valve S4:
05 −596−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
1 CHECK OTHER DTCS OUTPUT(IN ADDITION TO DTC P0766)
(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 ”P0766” is outputA
”P0766” and other DTCsB
HINT:
If any other codes besides ”P0766” is output, perform the troubleshooting for those DTCs first.
B GO TO RELEVANT DTC CHART(SEE PAGE 05 −564)
A
2 INSPECT SHIFT SOLENOID VALVE(S4)
(a) Remove the shift solenoid valve S4.
(b) Measure the resistance according to the value(s) in the table below.
Standard:
Tester ConnectionSpecified Condition
20_ C (68 _ F)
Solenoid Connector (S4) − Solenoid
Body (S4)11 to15 
(c) Connect positive (+) lead to the terminal of solenoid con-
nector, negative ( −) lead to the solenoid body.
OK:
The solenoid makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(S4)
OK
3 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

−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)05 −597
AVENSIS Supplement (RM 1045E)
4 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 OR REPLACE AUTOMATIC TRANSAXLE ASSY (SEE PAGE 40 −1)

G31765
Electronically Controlled
Transmission SolenoidE12ECM
E12
Y
Y −B 19
18
SL1+
SL1 −
6
13
B W
E1
SL1+
SL1− +B
CPU
05
−592−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
DTC P0748 PRESSURE CONTROL SOLENOID ”A” ELECTRICAL (SHIFT SOLENOID VALVE
SL1)
CIRCUIT DESCRIPTION
Shifting from 1st to 5th is performed in combination with ”ON” and ”OFF” operation of the shift solenoid valves
SL1, SL2, SL3, S4 and SR which is controlled by the ECM. If an open or short circuit occurs in either of the
shift solenoid valves, the ECM controls the remaining normal shift solenoid valve to allow the vehicle to be
operated smoothly (Fail safe function).
DTC No.DTC Detection ConditionTrouble Area
P0748
ECM checks for an open or short circuit in shift solenoid valves
SL1 (1 −trip detection logic)
S Output signal duty equals to 100%S Open or short in shift solenoid valve SL1 circuit
S Shift solenoid valve SL1
S ECM
MONITOR DESCRIPTION
The ECM commands gear shifts by turning the shift solenoid valves ”ON/OFF”. When there is an open or
short circuit in any shift solenoid valve circuit, the ECM detects the problem and illuminates the MIL and
stores the DTC. And the ECM performs the fail −safe function and turns the other shift solenoid valves in good
condition ”ON/OFF” (In case of an open or short circuit, the ECM stops sending current to the circuit.)
(see page 05 −560).
WIRING DIAGRAM
05CVW −03

G26426
Transmission Wire Side:
(Connector Front View):
SL1+
SL1 −
E1
C82158C91565
SL1−
SL1+
E13E12E11E10E9
ECM:
−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−593
AVENSIS Supplement (RM1045E)
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(SL 1)
(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)
6 (SL1+) − 13 (SL1 −)5.0 to 5.6

(c) Measure the resistance according to the value(s) in the
table below.
Standard (Check for short):
Tester ConnectionSpecified Condition
SL1+ − Body ground10 k
or higher
SL1 −− Body ground
NG Go to step 3
OK
2 CHECK HARNESS AND CONNECTOR(TRANSMISSION WIRE − ECM)
(a) Connect the transmission connector to the transaxle.
(b) Disconnect the connector from the ECM.
(c) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20_ C (68 _ F)
E12 − 19 (SL1+) − E12 − 18 (SL1 −)5.0 to 5.6

(d) Measure the resistance according to the value(s) in the
table below.
Standard (Check for short):
Tester ConnectionSpecified Condition
E12− 19 (SL1+) − Body ground10 k
or higher
E12 − 18 (SL1 −)− Body ground
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR (SEE PAGE 0 1− 32)
OK
REPLACE ECM (SEE PAGE 10− 29)

G20767
2
1
(+)
( − )
2
1
Shift Solenoid Valve SL
1:
05 −594−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
3 INSPECT SHIFT SOLENOID VALVE(SL 1)
(a) Remove the shift solenoid valve SL1.
(b) Measure the resistance according to the value(s) in the
table below.
Standard:
Tester ConnectionSpecified Condition
20_ C (68 _ F)
1 − 25.0 to 5.6

(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 valve.
OK:
The solenoid makes an operating noise.
NG REPLACE SHIFT SOLENOID VALVE(SL 1)
OK
REPAIR OR REPLACE TRANSMISSION WIRE (SEE PAGE 40 −1 6)