2005 TOYOTA AVENSIS clutch

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

05±1014± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
3 INSPECT TORQUE CONVERTER CLUTCH ASSY
NG REPLACE TORQUE CONVERTER CLUTCH
ASSY
OK
REPAIR AUTOMATIC TRANSAXLE ASSY

± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1007
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0750 SHIFT SOLENOID ºAº MALFUNCTION
(SHIFT SOLENOID VALVE S1)
DTC P0755 SHIFT SOLENOID ºBº MALFUNCTION
(SHIFT SOLENOID VALVE S2)
SYSTEM DESCRIPTION
The ECM uses signals from the vehicle speed sensor and speed sensor NT 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 the mechanical
trouble of the shift solenoid valves, the valve body or automatic transaxle (clutch, brake or gear etc.).
DTC No.DTC Detecting ConditionTrouble Area
P0750
The gear required by the ECM does not match the actual gear

Shift solenoid valve S1 is stuck open or closed

Valve body is blocked up or stuck

Automatic transaxle (clutch, brake or gear etc.)
P0755
The gear required by the ECM does not match the actual gear
when driving (2±trip detection logic)
Shift solenoid valve S2 is stuck open or closed

Valve body is blocked up or stuck

Automatic transaxle (clutch, brake or gear etc.)
05C8H±01

05±1002±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U341E)
AVENSIS REPAIR MANUAL (RM1018E)
Chapter 3: Off±vehicle Repair
(
: U340E, U341E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM824E)
SymptomSuspect AreaSee page
Vehicle does not move in any forward range and reverse range
1. Planetary gear unit
2. Forward clutch
3. One±way clutch No.2
4. Reverse Clutch
5. 1st and reverse brake









Vehicle does not move in R range
1. Planetary gear unit
2. Reverse Clutch
3. 1st and reverse brake





No up±shift (1st
2nd)1. 2nd brake
2. One±way clutch No.1



No up±shift (2nd
3rd)Direct clutch

No up±shift (3rd
O/D)O/D and 2nd brake

No lock±up or No lock±up offTorque converter clutch40±37
Harsh engagement (N
D)1. Forward clutch
2. One±way clutch No.2



Harsh engagement (N
R)1. Reverse clutch
2. 1st and reverse brake



Harsh engagement (Lock±up)Torque converter clutch40±37
Harsh engagement (1st
2nd)1. 2nd brake
2. One±way clutch No.1



Harsh engagement (2nd
3rd)Direct clutch

Harsh engagement (3rd
O/D)O/D and 2nd brake

Slip or shudder (Forward range)
1. Torque converter clutch
2. Forward clutch
3. Direct clutch
4. O/D and 2nd brake
5. 2nd brake
6. One±way clutch No.1
7. One±way clutch No.240±37












Slip or shudder (Reverse range)1. Reverse clutch
2. 1st and reverse brake



Slip or shudder (1st)One±way clutch No.2

Slip or shudder (2nd)1. 2nd brake
2. One±way clutch No.1



Slip or shudder (3rd)Direct clutch

Slip or shudder (O/D)O/D and 2nd brake

No engine braking (1st)1st and reverse brake

No engine braking (2nd)O/D and 2nd brake

Poor acceleration (All range)Torque converter clutch40±37
Large shift shock or engine stalls when starting off or stoppingTorque converter clutch40±37

I35376
A3
A/C Pressure Sensor A/C Control Assembly
VC
3B±W
IE2 A16 S516 7
B±W
GND
1G±W
IE2 A16 SG18 8
G±W
VOUT
2L±W
IE2 A16 PRE7 17
L±W 05±1116
± DIAGNOSTICSAIR CONDITIONING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC 23 PRESSURE SWITCH CIRCUIT
CIRCUIT DESCRIPTION
The pressure sensor sends the appropriate signals to the A/C amplifier assy when the A/C refrigerant pres-
sure drops too low or rises too high. When the A/C amplifier receives these signals, it outputs signals though
the A/C amplifier to switch OFF the compressor relay and turns the magnetic clutch OFF.
DTC No.Detection ItemTrouble Area
23

Open in pressure sensor circuit.

Abnormal refrigerant pressure.
below 196 kPa (2.0 kgf/cm
2, 28 psi)
over 3,140 kPa (32.0 kgf/cm2, 455 psi)

A/C tube assy (pressure sensor)

Harness or connector between A/C tube assy (pressure sen-
sor) and A/C amplifier assy

A/C amplifier assy
WIRING DIAGRAM
0564B±07

I37735
ALT+LL
1 23 45 67 8
1234
P1
A11
05±1180
±
DIAGNOSTICS COMBUSTION TYPE POWER HEATER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
1CHECK WIRE HARNESS(POWER HEATER ECU ± ALTERNATOR)
(a)Check for an open or short circuit in harness and connec- tor between terminal ALT+L of power heater ECU and ter-
minal L of alternator (See page 01±32).
NG REPAIR OR REPLACE WIRE HARNESS
OK
2 CHECK AND REPLACE GENERATOR W/CLUTCH PULLEY
NG REPAIR OR REPLACE GENERATOR W/CLUTCH PULLEY
OK
REPAIR OR REPLACE POWER HEATER ECU

I35709
C9
Clutch Start
SW Assy
R±W R±W
R±W R±W
R±W
W±B W±B LG±B
LG±BLG±B
LG±BLG±B
LG±B (*1)
(*2)12 9
515
6
21
568
610 J14
J/C
J19
J/C
DECM
E11
DD
6
IP CPU
CRUISEC11
C11CD
CKCE
CA Center J/B Combination Meter AssyIE2
IR1IE2
IR1 (*1) (*1) (*1) (*1)
CC
(*2)
(*2)(*2)
(*2)
*1: LHD
*2: RHD 1AZ±FSE (M/T) 05±1722
± DIAGNOSTICSCRUISE CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
CRUISE MAIN INDICATOR LIGHT CIRCUIT
CIRCUIT DESCRIPTION
When the cruise control main switch is turned off, the cruise control does not operate.
WIRING DIAGRAM
05C4U±01

I35708
R±W
R±W
R±W
W±BW±B LG±BLG±BLG±B
3
710
21
567
610 J/C
DECM
E11
8
D
6
IP C11
C11CD
CKCA
CA Center J/B Combination Meter AssyIK2
(*1)
(*2) C
*1: LHD
*2: RHD 1AZ±FSE (A/T)
RB
DL N1
Park/neutral Position SW
IK1
R±W(*1)(*2)
CPU CRUISE1
CD CA DA DBDCD
J14J14 J19 J19
Center J/B
Driver Side J/B
R±W GAUGE2 GAUGE1
27 7 1
I35710
C9
Clutch Start
SW Assy
R±W R±W
R±W
R±W
R±W
W±B W±BLG±B
LG±BLG±B
(*1)
(*2)1 9
515
6
21
56
8
610
DECM
E11
6
IP CPU
CRUISEC11
C11CD
CKCE
CA Center J/B Combination Meter AssyIE2
IR1IE2
IR1 (*1) (*1) (*1)
(*2)
(*2)
*1: LHD
*2: RHD 1CD±FTV
LG±B
(*2) 2
± DIAGNOSTICSCRUISE CONTROL SYSTEM
05±1723
AVENSIS REPAIR MANUAL (RM1018E)