2005 TOYOTA AVENSIS wiring

GND
C93866
1 V/DIV
1 ms/DIV
G31763
ECM
NC+
NC−
E1234 26
LG
LG−B 2 1 C5
Counter Gear Speed Sensor
E12
5V
E1
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−607
AVENSIS Supplement (RM1045E)
DTC P0793 INTERMEDIATE SHAFT SPEED SENSOR
”A”
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) and (c) continuity for 5 sec. or
more: (1−trip detection logic)
(a) Vehicle speed: 50 km/h (31 mph) or more
(b) Park/neutral position switch (NSW) is OFF
(c) Speed sensor (NC): less than 300 rpmSOpen or short in transmission revolution sensor NC (speed
sensor NC) circuit
STransmission revolution sensor NC (speed sensor NC)
SECM
Reference (Using an oscilloscope):
Check the waveform between the terminals NC+ and
NC−of the ECM connector.
Standard: Refer to the illustration.
TerminalNC+−NC−
Tool setting1V/DIV, 1ms/DIV
Vehicle conditionVehicle speed 30 km/h (19 mph): (3rd gear)
Engine speed 1,400 rpm
MONITOR DESCRIPTION
The NC terminal of ECM detects a revolution signal from the speed sensor (NC) (counter gear rpm). The
ECM calculates a gearshift comparing the speed sensor (NT) with the speed sensor (NC).
While the vehicle is operating in 2nd, 3rd, 4th or 5th gear in the shift position of D, if the counter gear revolu-
tion is less than 300 rpm
*1although the output shaft revolution is more than 1,000 rpm*2, the ECM detects
the trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is 50 km/h (31 mph) or more.
WIRING DIAGRAM
05JLK−01

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

G31165
E1
Electronically Controlled
Transmission Solenoid
L−B
E12DSLECM
11
SB
10
DSL+B
CPU
05−586− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
DTC P0743 TORQUE CONVERTER CLUTCH CIRCUIT
ELECTRICAL (SHIFT SOLENOID VALVE
DSL)
CIRCUIT DESCRIPTION
The shift solenoid valve DSL is turned ”ON” and ”OFF” by signals from the ECM in order to control the hydrau-
lic pressure operation, the lock−up relay valve, which then the controls operation of the lock−up clutch.
DTC No.DTC Detection ConditionTrouble Area
P0743
Either (a) or (b) is detected at 1 time:
(2 trip detection logic)
(a) Solenoid resistance is 8
or less short circuit when sole-
noid is energized
(b) Solenoid resistance is 100 k
or more open circuit when
solenoid is not energized
SOpen or short in shift solenoid valve DSL circuit
SShift solenoid valve DSL
SECM
MONITOR DESCRIPTION
Torque converter lock−up is controlled by the ECM based on engine rpm, engine load, engine temperature,
vehicle speed, transmission temperature, and shift range selection. The ECM determines the lock−up status
of the torque converter by comparing the engine rpm (NE) to the input turbine rpm (NT). The ECM calculates
the actual transmission gear by comparing input turbine rpm (NT) to counter gear rpm (NC). When conditions
are appropriate, the ECM requests ”lock−up” by applying control voltage to shift solenoid DSL. When the
DSL is opened, solenoid DSL applies pressure to the lock−up relay valve and locks the torque converter
clutch. If the ECM detects an open or short in the DSL solenoid circuit, the ECM interprets this as a fault in
the DSL solenoid or circuit. The ECM will turn on the MIL and store the DTC.
WIRING DIAGRAM
05CW7−02

05−580−
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U 151E)
AVENSIS Supplement (RM 1045E)
DTC P0724 BRAKE SWITCH ”B” CIRCUIT HIGH
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling while driving in lock −up condition, when
brakes are suddenly applied.
When the brake pedal is depressed, this switch sends a signals to the ECM. Then the ECM cancels the op-
eration of the lock −up clutch while braking is in progress.
DTC No.DTC Detecting ConditionTrouble Area
P0724
The stop light switch remains ON even when the vehicle is
driven in a GO (30 km/h) and STOP (3 km/h) fashion 10 times.
(2 −trip detection logic).S Short in stop light switch signal circuit
S Stop light switch
S ECM
MONITOR DESCRIPTION
This DTC indicates that the stop light switch remains on. When the stop light switch remains ON during ”stop
and go” driving, the ECM interprets this as a fault in the stop light switch and the MIL comes on and the ECM
stores the DTC. The vehicle must stop (less than 3 km/h (2 mph)) and go (30 km/h ( 19 mph) or more) ten
times for two driving cycles in order to detect malfunction.
WIRING DIAGRAM
See page 05 −1 85.
05JLI −01

G31161
THO
E2 BRE12
28 32
7 E1
Electronically Controlled
Transmission Solenoid
E13 O
1
OVECM
E2 THO5V 05−574
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
DTC P0711TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” PERFORMANCE
CIRCUIT DESCRIPTION
The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance
value which is input into the ECM.
DTC No.DTC Detection ConditionTrouble Area
P0711
(A) Both (a) and (b) are detected: (2−trip detection logic)
(a) Intake air and engine coolant temperatures are more than
−10˚C (14_F) at engine start
(b) After normal driving for over 19 min. and 8 km (5 mile) or
more, ATF temp. is less than 10˚C (50_F)
(B) When engine coolant temp. is less than 35˚C (95_F) at
engine start, the ATF temp. is 110˚C (230_F) or more after
17 min. of engine start (2−trip detection logic).
SOpen or short in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
MONITOR DESCRIPTION
The ATF temperature sensor converts the ATF temperature to an electrical resistance value. Based on the
resistance, the ECM determines the ATF temperature and detects an opens or shorts in the ATF temperature
circuit or a fault of the ATF temperature sensor.
After running the vehicle for a certain period, the ATF temperature should increase. If the ATF temperature
is below 10_C (50_F) after running the vehicle for a certain period, the ECM interprets this as a fault, and
turns on the MIL.
When the ATF temperature is 110_C (230_F) or more after 17 minutes of engine cold start, the ECM also
determines this as a fault, turns on the MIL, and stores the DTC.
WIRING DIAGRAM
05JLG−01

− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−571
AVENSIS Supplement (RM1045E)
DTC P0710 TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” CIRCUIT
DTC P0712 TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” CIRCUIT LOW INPUT
DTC P0713 TRANSMISSION FLUID TEMPERATURE
SENSOR ”A” CIRCUIT HIGH INPUT
CIRCUIT DESCRIPTION
The ATF (Automatic Transmission Fluid) temperature sensor converts the fluid temperature into a resistance
value which is input into the ECM.
The ECM applies a voltage to the temperature sensor through ECM terminal THO.
The sensor resistance changes with the transmission fluid temperature. As the temperature becomes high-
er, the sensor resistance decreases.
One terminal of the sensor is grounded so that the sensor resistance decreases and the voltage goes down
as the temperature becomes higher.
The ECM calculates the fluid temperature based on the voltage signal.
DTC No.DTC Detection ConditionTrouble Area
P0710
(a) and (b) is detected momentary within 0.5 sec. when neither
P0712 or P0713 is not detected (1−trip detection logic)
(a) ATF temperature sensor resistance is less than 79

(b) ATF temperature sensor resistance is more than156 k

HINT:
Within 0.5 sec., the malfunction switches from (a) to (b) or from
(b) to (a)
SOpen or short in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
P0712ATF temperature sensor resistance is less than 79
for 0.5
sec. or more (1−trip detection logic)SShort in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
P0713
ATF temperature sensor resistance is more than156 k
when
15 minutes or more after the engine start
DTC is detected for 0.5 sec. or more (1−trip detection logic)SOpen in ATF temperature sensor circuit
STransmission wire (ATF temperature sensor)
SECM
MONITOR DESCRIPTION
The automatic transmission fluid (ATF) temperature sensor converts ATF temperature to an electrical resis-
tance value. Based on the resistance, the ECM determines the ATF temperature, and the ECM detects an
opens or shorts in the ATF temperature circuit. If the resistance value of the ATF temperature is less than
79

*1or more than156 k
*2, the ECM interprets this as a fault in the ATF sensor or wiring. The ECM will
turn on the MIL and store the DTC.
*1:150_C (302_F) or more is indicated regardless of the actual ATF temperature.
*2:−40_C(−40_F) is indicated regardless of the actual ATF temperature.
HINT:
The ATF temperature can be checked on the hand−held tester display.
05CVQ−02

G31161
THO
E2 BRE12
28 32
7 E1
Electronically Controlled
Transmission Solenoid
E13 O
1
OVECM
E2 THO5V 05−572
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
According to the DATA LIST displayed by the hand−held tester, you can read the value of the switch, sensor,
actuator and so on without parts removal. Reading the DATA LIST as the first step of troubleshooting is one
method to shorten labor time.
(a) Warm up the engine.
(b) Turn the ignition switch off.
(c) Connect the hand−held tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Push the ”ON” button of the hand−held tester.
(f) Select the item ”DIAGNOSIS / OBD/MOBD / DATA LIST”.
(g) According to the display on tester, read the ”DATA LIST”.
ItemMeasurement Item/
Range (display)Normal Condition
AT FLUID TEMP
ATF Temp. Sensor Value/
min.:−40_C(−40_F)
max.: 215_C(419_F)
Approx. 80_C(176_F) (After Stall Test)
HINT:
When DTC P0712 is output and hand−held tester output is150_C (302_F), there is a short circuit.
When DTC P0713 is output and hand−held tester output is−40_C(−40_F), there is an open circuit.
Measure the resistance between terminal THO1(THO) and body ground.
Temperature DisplayedMalfunction
−40˚C(−40˚F)Open circuit
150˚C(302˚F) or moreShort circuit

G30839
E9
N
D 6ECM
E10
E9
E10
E13
E10
E10
E10P
R
STA
SPT1
SFTD
SFTU W−L
J5 J/C
R−Y
CC
J/C
J23C A IK220
5
R W−L
R−Y 1 PL
RL
NL
DL
6 75 RBIK1
IK1 1
R−W
J/C
J13J12 BB
B−W
Fuse Block
66
21 ST
B−Y
Center J/B
CG
CDCA
CA87
1 1
I13 Ignition SW
AM2 ST2
AM1IG1 4
3
1G−Y
G−R
B−RDHDHDN DA DB
DA
AM12 13 5IG1Relay GAUGE2 GAUGE1
1 277
5
1Driver Side J/B
11
IE4IP1 3
IG S
SFTD
SFTU
E52 R−WT7 Transmission Control SW
L
B
R
J17
J/CA
A
B−R
11A
Engine Room J/B No.4AM2
2
1
B−G
W−B
J15 J/C
W−B
IP A IK IJ
4B 4A1
1 1 2ALT
1
4D
Battery
B−G
FL MAIN
*1: LHD *2: RHD(*1) R−Y(*1)
J22 2
R
LG−B
B−Y
A IK2
IK2 R−W
9
10
LG−B
B−Y
A J12 J/C
B−W
9
7
1
W−B
(*1) (*2)
1
W−B
(*1)
(*2) B−G
911
7
10
17
20
21
22
Engine Room R/B and J/B No.1
R−Y
(*2)R−Y
(*2) N1
Neutral Start SW
3
R−W
R−W
− DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U151E)05−567
AVENSIS Supplement (RM1045E)
WIRING DIAGRAM