TOYOTA AVENSIS 2005 Service Repair Manual

D30748
P
R
N
DECM
E10
IJ BatteryI13
Ignition SW Driver Side J/BCenter J/B
Engine Room J/B No.4
FL MAIN N1
Park/neutral Position SW
W±L D J/C
J29 J18
(*2) (*1)
R±Y
J5
J/C AC
5 20
IK2
IK1
109
R C C
5
7 21
PL
NL
DL RB 3 R±W
1
18
CD
CA
W±B 27
9
1 1
5GAUGE2 IG1 Relay
3
2
1 5
AM1 B±G
G±Y
11
4D
4B
*1: LHD
*2: RHDE10
E10
E1021
11
22
10 D D D
J29 J18
(*2) (*1)
(*2) W±L W±L
RLJ22 J23J/C
R±Y (*2) R±Y
R±Y(*1)
R±Y(*1)
A A
A AJ/C
J29 J18
(*2) (*1) J29 J18
(*2) (*1) R R
IK2
IK2LG±B
LG±B
R±W
IK1R±WR±W
DA
DA
DH DH DN
G±R
G±Y31
AM1 IG1
B±G B±G
21R±W
ALT
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1025
AVENSIS REPAIR MANUAL (RM1018E)
WIRING DIAGRAM

    
 
C53270
C96192
E1
P N R
D
05±1026± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT PARK/NEUTRAL POSITION SWITCH ASSY
(a) Disconnect the park/neutral position switch connector.
(b) Check the continuity between each terminals shown be-
low when the shift lever is moved to each range.
Shift RangeTerminal No. to continuity
P1 ± 36 ± 9
R2 ± 3±
N3 ± 56 ± 9
D3 ± 7±
OK:
There is continuity.
NG REPLACE PARK/NEUTRAL POSITION SWITCH
ASSY
OK
2 CHECK HARNESS AND CONNECTOR(PARK/NEUTRAL POSITION SWITCH ±
ECM)
(a) Connect the park/neutral position switch connector.
(b) Disconnect the ECM connector.
(c) Turn the ignition switch to ON.
(d) Measure the voltage between terminals E1 and that R as
well as D, P and N of the ECM when the shift lever is
shifted to the following range.
OK:
Shift RangeTerminalVoltage (V)
PP ± E110 to 14
RR ± E110 to 14
NN ± E110 to 14
DD ± E110 to 14
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM

D02290
Line Pressure
Control Pressure
Current Flow to Solenoid
BE4056
ON
OFF
1 cycle
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1021
AVENSIS REPAIR MANUAL (RM1018E)
DTC P1760 LINEAR SOLENOID FOR LINE PRESSURE
CONTROL CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
The throttle pressure that is applied to the primary regulator
valve (which modulates the line pressure) causes the solenoid
valve SLT, under electronic control, to precisely and minutely
modulate and generate the line pressure according the extent
of the accelerator pedal depressed or the output of engine pow-
er.
This reduces the function of the line pressure and provides
smooth shifting.
Upon receiving a signal of the throttle valve opening angle, the
ECM controls the line pressure by sending a predetermined (*)
duty ratio to the solenoid valve, modulating the line pressure
and generating throttle pressure.
(*): Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle.
For example, if A is the period of continuity in one cycle, and B
is the period of non±continuity, then
Duty Ratio=A/(A+B) x 100 (%)
DTC No.DTC Detection ConditionTrouble Area
P1760
Condition (a) or (b) below is detected 1 sec. or more:
(a) SLT±
terminal: 0 V
(b) SLT±
terminal: 12 V

Open or short in shift solenoid valve SLT circuit

Shift solenoid valve SLT

ECM
05C8L±01

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

D26540
ECM
NT+
NT± E12
35 B±O
B 2 1T4
Turbine Speed
Sensor
E1227
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1019
AVENSIS REPAIR MANUAL (RM1018E)
DTC P1725 NT REVOLUTION SENSOR CIRCUIT
MALFUNCTION
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT)
with the vehicle speed sensor signal, the ECM detects the shift timing of the gears and appropriately controls
the engine torque and hydraulic pressure according to various conditions. Thus smooth gear shifting is per-
formed.
DTC No.DTC Detection ConditionTrouble Area
P1725
ECM detects conditions (a), (b), (c) and (d) continuity for 5 sec.
or more: (1 ± trip detection logic)
(a) Vehicle speed: 50 km/h (20 mph) or more
(b) 2nd, 3rd or O/D gear
(c) Solenoid valves and Park/neutral position switch are normal
(d) NT < 300 rpm

Open or short in speed sensor (NT) circuit

Speed sensor (NT)

ECM
WIRING DIAGRAM
057ZG±05

C58536
C95812
NT+
NT±
05±1020± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT SPEED SENSOR(NT)
(a) Disconnect the sensor connector from the transaxle.
(b) Measure the resistance between terminals of speed sen-
sor (NT).
OK:
Resistance: 560 to 680
at 20
C (68
F)
NG REPLACE SPEED SENSOR(NT)
OK
2 CHECK HARNESS AND CONNECTOR(SPEED SENSOR±ECM)
(a) Connect the speed sensor (NT) connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance between terminals NT+ and NT±.
OK:
Resistance: 560 to 680
at 20
C (68
F)
(d) Check the continuity between the wire harness side con-
nectors.
OK:
Standard (Check for short):
SymbolsSpecified condition
NT+ ± Body groundNo continuityNT± ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM

05±1018±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U341E)
AVENSIS REPAIR MANUAL (RM1018E)
DTCP1520STOP LIGHT SWITCH CIRCUIT MALFUNCTION
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 Detection ConditionTrouble Area
P1520Stop light switch remains ON while vehicle running (1±trip
detection logic)
Short in stop lamp switch signal circuit

Stop lamp switch

ECM
WIRING DIAGRAM
See page 05±115.
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
CHECK AND REPLACE ECM
05C8K±01

D26539
E1
ECT Solenoid
R
E12SLECM
13
LG
4
SL
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1015
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0773 SHIFT SOLENOID ºEº ELECTRICAL (SHIFT
SOLENOID VALVE SL)
CIRCUIT DESCRIPTION
The shift solenoid valve SL is turned ON and OFF by signals from the ECM to control the hydraulic pressure
acting on the lock±up relay valve, which then controls operation of the lock±up clutch.
Fail safe function:
If the ECM detects a malfunction, it turns the shift solenoid valve SL OFF.
DTC No.DTC Detecting ConditionTrouble Area
P0773
Either (a) or (b) is detected for 1 time.
(2±trip detection logic)
(a) Solenoid resistance is 8  or less when solenoid is ener-
gized.
(b) Solenoid resistance is 100 k or more when solenoid is not
energized.

Open or short in shift solenoid valve SL circuit

Shift solenoid valve SL

ECM
WIRING DIAGRAM
05687±06

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