2005 TOYOTA AVENSIS wiring

D26541
C3
Counter Gear Speed
SensorECM
26
E12 NC+ LG
2
34
E12 NC± LG±B 1
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))05±965
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0793 INTERMEDIATE SHAFT SPEED SENSOR
ºAº
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the counter gear. By comparing the counter gear speed signal (NC)
with the direct clutch speed sensor signal (NT), the ECM detects the shift timing of the gears and appropriate-
ly controls the engine torque and hydraulic pressure according to various conditions. Thus smooth gear shift-
ing is performed.
DTC No.DTC Detection ConditionTrouble Area
P0793
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) NC < 300 rpm

Open or short in speed sensor (NC) circuit

Speed sensor (NC)

ECM
WIRING DIAGRAM
05C9H±01

D26539
E1
ECT Solenoid
V
7L19
E12SBECM
SB 05±1030
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)
AVENSIS REPAIR MANUAL (RM1018E)
DTC P1798 SB SOLENOID CIRCUIT MALFUNCTION
(SHIFT SOLENOID VALVE SB)
CIRCUIT DESCRIPTION
Shift solenoid valve SB controls the 2nd brake (B1) and 1st and reverse brake pressures and performs the
1st and 2nd engine brake control.
Fail safe function:

S shift control prohibition.

On activating the fail±safe function during S shift, the driving mode turns to the ordinal D range.
DTC No.DTC Detection ConditionTrouble Area
P1798
ECM memorizes DTC P1798 if (a) or (b) condition below is
detected once or more.
(a) Solenoid resistance is 30
or lower (short circuit) when
solenoid is energized.
(b) Solenoid resistance is 100 k
or higher (open circuit) when
solenoid is not energized.

Open or short in shift solenoid valve SB circuit

Shift solenoid valve SB

ECM
WIRING DIAGRAM
05C8N±01

D26539
E1
ECT Solenoid
Y
2R±B12
E12
STECM
ST
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U341E)05±1027
AVENSIS REPAIR MANUAL (RM1018E)
DTC P1790 ST SOLENOID CIRCUIT MALFUNCTION
CIRCUIT DESCRIPTION
Shift solenoid valve ST is switched ON±OFF by a signal from ECM so that let in or out timing of O/D and
2nd brake is adjusted by operating orifice control valve. Therefore, shift solenoid valve ST operates when
letting in or out reverse clutch.
If it is broken, the shift shock becomes big.
DTC No.DTC Detection ConditionTrouble Area
P1790
ECM memorizes DTC P1790 if (a) or (b) condition below is
detected once or more.
(a) Solenoid resistance is 30
or lower (short circuit) when
solenoid is energized.
(b) Solenoid resistance is 100 k
or higher (open circuit) when
solenoid is not energized.

Open or short in shift solenoid valve ST circuit

Shift solenoid valve ST

ECM
WIRING DIAGRAM
05C8M±01

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

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

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

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