2005 TOYOTA AVENSIS diagnostic

C58536
C95812
NT+
NT±
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±885
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT SPEED SENSOR(NT)
(a) Disconnect the speed sensor connector from the trans-
axle.
(b) Measure the resistance between terminals of speed sen-
sor.
OK:
Resistance:
TOYOTA made: 500 to 620
at 20
C (68
F)
AISIN made: 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 connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance between terminals NT+ and NT±.
OK:
Resistance:
TOYOTA made: 500 to 620
at 20
C (68
F)
AISIN made: 560 to 680
at 20
C (68
F)
(d) Measure the resistance between body ground and that
NT+ as well as NT± of the ECM connector.
OK:
Resistance: 1M
or higher
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM

D26545
E1
ECT Solenoid
ECM
28
E2 BR
6
30
THO
E13
1 E2
THO O
O
VE13 05±882
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
DTC P0710/38 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT
DTC P0712/38 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT LOW INPUT
DTC P0713/38 TRANSMISSION FLUID TEMPERATURE
SENSOR ºAº CIRCUIT HIGH INPUT
CIRCUIT DESCRIPTION
The ATF temperature sensor converts the fluid temperature into a resistance value which is input into the
ECM.
DTC No.DTC Detection ConditionTrouble Area
P0710/38
(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 than 156 k
HINT:
Wthin 0.5 sec. the malfunction switches from (a) to (b) or from
(b) to (a)

Open or short in ATF temperature sensor circuit

ATF temperature sensor
P0712/38ATF temperature sensor resistance is less than 79 for 0.5
sec. or more (1±trip detection logic)
ECM
P0713/38
DTC is detected for 0.5 sec. or more (1±trip detection logic)
ATF temperature sensor resistance is more than 156 kafter
started engine for 15 minutes or more
WIRING DIAGRAM
05C8T±01

C54864
THO
E2
C95813THOE2
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±883
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT TRANSMISSION WIRE(ATF TEMPERATURE SENSOR)
(a) Disconnect the transmission wire connector from the
transaxle.
(b) Measure the resistance between terminals THO and E2.
OK:
Resistance: 79
to 156 k

(c) Check the continuity between the wire harness side con-
nectors.
OK:
Standard (Check for a short):
SymbolsSpecified condition
THO ± Body groundNo continuityE2 ± Body groundNo continuity
NG REPAIR OR REPLACE TRANSMISSION WIRE
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 THO and E2.
OK:
Resistance: 79
to 156 k

(d) Check the continuity between the wire harness side con-
nectors.
OK:
Standard (Check for a short):
SymbolsSpecified condition
THO ± Body groundNo continuityE2 ± Body groundNo continuity
NG REPAIR OR REPLACE HARNESS OR
CONNECTOR
OK
CHECK AND REPLACE ECM

0567W±11
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))05±879
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
HINT:
If a normal code is displayed during the DTC check but the trouble still o\
ccurs, check the circuits for each
symptom in the order given in the charts on the following pages and proceed to \
the page given for trouble-
shooting.
The Matrix Chart is divided into 3 chapters.

If the instruction ºProceed to next circuit inspection shown on matri\
x chartº is given in the flow chart
for each circuit, proceed to the circuit with the next highest number in the table to continue the check.

If the trouble still occurs even though there are no abnormalities in any of the other circuits, then ch\
eck
and replace the ECM.
CHAPTER 1: ELECTRONIC CIRCUIT MATRIX CHART
SymptomSuspect AreaSee page
No up±shift (A particular gear, from 1st to O/D gear, is not up±
shifted)ECM01±32
No down±shift (A particular gear, from O/D to 1st gear, is not
down±shifted)ECM01±32
No lock±up or No lock±up off
4. Stop light switch circuit
5. Engine coolant temp. sensor circuit
6. Throttle position sensor circuit
7. ECM05±905
05±161
05±161
01±32
Shift point too high or too lowECM01±32
No gear change by shifting into º+º or º±º while the shif\
t lever is in
the Sposition1. Transmission control switch circuit
2. ECM05±91001±32
Up±shift to O/D from 3rd while engine is cold
1. Engine coolant temp. sensor circuit
2. ATF temp. sensor circuit
3. ECM05±161
05±88201±32
Harsh engagement (N
D)ECM01±32
Harsh engagement (Lock±up)ECM01±32
Harsh engagement (Any driving range)ECM01±32
Poor accelerationECM01±32
Engine stalls when starting off or stoppingECM01±32
No kick±down1. Kick±down switch circuit
2. ECM05±908
01±32

05±880±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
Chapter 2: On±vehicle Repair
(
: U241E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM840U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward range or reverse range
1. Manual valve
2. Primary regulator valve
3. Off±vehicle repair matrix chart



±
Vehicle does not move in R rangeOff±vehicle repair matrix chart±
No up±shift (1st
2nd)1. Valve body assy
2. Off±vehicle repair matrix chart

±
No up±shift (2nd
3rd)1. Valve body assy
2. Off±vehicle repair matrix chart

±
No up±shift (3rd
O/D)1. Valve body assy
2. Off±vehicle repair matrix chart

±
No down±shift (O/D
3rd)Valve body assy

No down±shift (3rd
2nd)Valve body assy

No down±shift (2nd
1st)Valve body assy

No lock±up or No lock±up off1. Valve body assy
2. Off±vehicle repair matrix chart

±
Harsh engagement (N
D)
1. C1 accumulator
2. Off±vehicle repair matrix chart
3. Valve body assy
±


Harsh engagement (N
R)1. Valve body assy
2. Off±vehicle repair matrix chart

±
Harsh engagement (Lock±up)1. Valve body assy
2. Off±vehicle repair matrix chart
±
Harsh engagement (2nd
3rd)Valve body assy

Harsh engagement (3rd
O/D)Valve body assy

Harsh engagement (O/D
3rd)Valve body assy

Slip or shudder (Forward and reverse)1. Oil strainer
2. Off±vehicle repair matrix chart40±47
±
No kick±downValve body assy

±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))05±881
AVENSIS REPAIR MANUAL (RM1018E)
Chapter 3: Off±vehicle Repair
(
: U241E AUTOMATIC TRANSAXLE Repair Manual Pub. No. RM840U)
SymptomSuspect AreaSee page
Vehicle does not move in any forward range or reverse range
1. Front and rear planetary gear
2. U/D planetary gear
3. U/D one±way clutch (F
2)
4. Forward clutch (C
1)
5. U/D brake (B
3)










Vehicle does not move in R range
1. Front and rear planetary gear unit
2. U/D planetary gear
3. Direct clutch (C
2)
4. U/D brake (C
3)
5. 1st & reverse brake (B
2)










No up±shift (1st
2nd)1. No.1 one±way clutch (F1)
2. 2nd brake (B
1)




No up±shift (2nd
3rd)Direct clutch (C2)

No up±shift (3rd
O/D)U/D clutch (C3)

No lock±up or No lock±up offTorque converter clutch40±37
Harsh engagement (N
D)
1. Forward clutch (C1)
2. U/D one±way clutch (F
2)
3. No.1 one±way clutch (F
1)






Harsh engagement (N
R)1. Direct clutch (C2)
2. 1st & reverse brake (B
2)




Harsh engagement (Lock±up)Torque converter clutch40±37
Slip or shudder (Forward position: After warm±up)
1. Torque converter clutch
2. Forward clutch (C
1)
3. Direct clutch (C
2)
4. U/D brake (C
3)
5. No.1 one±way clutch (F
1)
6. U/D one±way clutch (F
2)
40±37









Slip or shudder (R range)1. Direct clutch (C2)
2. 1st & reverse brake (B
2)




Slip or shudder (1st)No.1 one±way clutch (F1)

Slip or shudder (2nd)1. U/D one±way clutch (F2)
2. 2nd brake (B
1)




Slip or shudder (3rd)Direct clutch (C2)

Slip or shudder (O/D)U/D clutch (C3)

No engine braking (1st ± 3rd: D range)U/D brake (B3)

Poor acceleration (All range)1. Torque converter clutch
2. U/D planetary gear40±37

Poor acceleration (O/D)1. U/D clutch (C3)
2. U/D planetary gear



Large shift shock or engine stalls when starting off or stoppingTorque converter clutch40±37

05C8S±01
C95801
E13 E12 E10 E9
05±878± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECM
Symbols (Terminal No.)Wiring ColorConditionSTD Voltage (V)
SLT+ (E13±17) ±
SLT± (E13±16)P±L ± PIG switch ON10 to 14
THO (E13±30) ± E2 (E13±28)V ± BRIG switch ON and ATF temperature 110
C (230
F)Below 1
DSL (E12 11) E1 (E12 7)LB BRIG switch ONBelow 1DSL (E12±11) ± E1 (E12±7)L±B ± BRVehicle driving under lock±up range10 to 14
IG switch ONBelow 1
S4 (E12±13) ± E1 (E12±7)L ± BRO/D gear10 to 14()()
Except O/D gearBelow 1
SL2+ (E12 17)IG switch ONBelow 1SL2+ (E12±17) ±
SL2 (E12 16)R ± R±B1st or 2nd gear10 to 14SL2± (E12±16)3rd or O/D gearBelow 1
SL1+ (E12 19)IG switch ON10 to 14SL1+ (E12±19) ±
SL1 (E12 18)Y ± Y±B1st gear10 to 14SL1± (E12±18)Except 1st gearBelow 1
NC+ (E12±26) ± NC± (E12±34)LG ± LG±BEngine is runningBelow 1 and 4 to 5
NT+ (E12±27) ± NT± (E12±35)B±O ± BEngine is runningBelow 1 and 4 to 5
D (E10 10) E1 (E12 7)LG B BRIG switch ON Shift lever D range10 to 14D (E10±10) ± E1 (E12±7)LG±B ± BRIG switch ON Shift lever other than D rangeBelow 1
R (E10 11) E1 (E12 7)RY BRIG switch ON Shift lever R range10 to 14R (E10±11) ± E1 (E12±7)R±Y ± BRIG switch ON Shift lever other than R rangeBelow 1
SPD (E10±17) ± E1 (E12±7)V±W ± BRIG switch ON4.5 to 5.5
SPT1 (E10 20) E1 (E12 7)LBRIG switch ON and shift lever S position7.5 to 14SPT1 (E10±20) ± E1 (E12±7)L ± BRIG switch ON and shift lever except for S positionBelow 1
SFTD (E9 21) E1 (E12 7)BBRIG switch ON and shift lever S position7.5 to 14SFTD (E9±21) ± E1 (E12±7)B ± BRIG switch ON and shift lever º±º position (Down shift)Below 1.5
SFTU (E9 22) E1 (E12 7)RBRIG switch ON and shift lever S position7.5 to 14SFTU (E9±22) ± E1 (E12±7)R ± BRIG switch ON and shift lever º+º position (Up shift)Below 1.5
KD*1(E9 27) E1 (E12 7)WBRIG switch ON and kick±down switch ONBelow 1KD*1 (E9±27) ± E1 (E12±7)W ± BRIG switch ON and kick±down switch OFF10 to 14
*1: Europe

0567R±11
D30682
Combination Meter
(MIL)
Europe spec: Stop Lamp
Switch Assy
Shift Lock Control Unit
(Transmission Control Switch)
Shift Solenoid Valve SLT
Shift Solenoid Valve SL1ECM
DLC3
Park/neutral Position
Switch Assy
Shift Solenoid Valve SL2
Shift Solenoid Valve DSLShift Solenoid
Valve S4
Transmission Wire
(ATF Temperature Sensor) Speed Sensor (NT)
Speed Sensor (NC)
Kick±down Switch
± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±877
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION