2005 TOYOTA AVENSIS Circuit

05±860±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
15Circuit Inspection (See page 05±882)
16 Identification of Problem
17 Repair
18 Confirmation Test
End

C87489
Skid Control ECU
with Actuator
W− B (*1) W− B (*1)
W−
B (*2)
W (*2) W (*1)
W (*1) W
S1 TS
28
W− B (*2)
CB CA6
3 IE2 12
J8
J/C
D
A IO IP
CG TS
D5
DLC3
4 12 D
ACenter J/B
J16
J/C
*1: LHD
*2: RHD IO: 1AZ
−FSE
IL: 1CD− FTV
C
B
J20 J21 W (*2)
J/C
C52361
Ts
CGDLC3
05− 854
−
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
TS TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
The sensor check circuit detects troubles in the sensor signal which cannot be detected by the DTC check.
Connecting terminals Ts and CG of the DLC3 starts the check.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT DLC3 TERMINAL VOLTAGE(Ts TERMINAL)
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Ts and CG of the
DLC3.
OK:
Voltage: 10 to 14 V
OK Go to step 3
NG
056T8− 03

±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±855
AVENSIS REPAIR MANUAL (RM1018E)
2CHECK HARNESS AND CONNECTOR(DLC3 ± BODY GROUND)
(a)Check for an open or short circuit in harness and connector between terminal Ts of the DLC3 and skid
control ECU (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
3 CHECK AND REPAIR HARNESS AND CONNECTOR(SKID CONTROL ECU ± DLC3)
(a) Check for an open or short circuit in harness and connector between terminal \
CG of the DLC3 and body ground (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

C87490
Skid Control ECU
with Actuator
S117 D5 DLC3
TC
CG13
4
W±B (*1) W±L (*1)
AA BB
W±B (*2)J/C
W±L (*1) W±L (*2)
W±B (*1) J16
J/C
IP CB3
CA6 DL15
DB17Driver Side J/B
Center J/B
W±B (*2)W±L
*1: LHD
*2: RHDTC W±L (*2) B
J8
J/C D
J21 J20
IO: Gasoline
IL: 1CD±FTV
C52361
Tc
CGDLC3
05±852
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
TC TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
Connecting terminals Tc and CG of the DLC3 causes the ECU to display the DTC by flashing the ABS warn-
ing light.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT DLC3 TERMINAL VOLTAGE(Tc TERMINAL)
(a) Turn the ignition switch ON.
(b) Measure the voltage between terminals Tc and CG of the
DLC3.
OK:
Voltage: 10 to 14 V
OK Go to step 3
NG
056T7±03

±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±853
AVENSIS REPAIR MANUAL (RM1018E)
2CHECK HARNESS AND CONNECTOR(DLC3 ± BODY GROUND)
(a)Check for an open or short circuit in harness and connector between terminal \
CG of the DLC3 and body
ground (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
3 CHECK HARNESS AND CONNECTOR(SKID CONTROL ECU ± DLC3)
(a) Check for an open or short circuit in harness and connector between term\
inal Tc of the skid control ECU and DLC3 (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

F45145
*1: 1AZ±FSE
*2: 1CD±FTV*3: LHD
*4: RHD B±G
12 Engine Room J/B No.4
(*1)
(*2)
B1
4B1
4D ALT
FL MAIN
Engine Room R/B No.3
ALT
33
12(*2)
W B±G(*1) B±G(*1)(*2)
W
B±L(*2)1
ED1 Driver Side J/B
18
DBECU±IGIG1 Relay
1
DNBZ 15
S1 B±Y B±Y3
IE1Skid Control ECU
With Actuator V7
VSC Warning Buzzer
GC
J10 J20
(*4)J/C
(*3)G
C
J11 J21
(*4) (*3)R±W R±W
BatteryBuzzer
21 05±850
± DIAGNOSTICSABS WITH EBD & BA & TRC & VSC SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
SKID CONTROL BUZZER CIRCUIT
CIRCUIT DESCRIPTION
The skid control buzzer sounds during VSC operation.
WIRING DIAGRAM
0543K±04

F02192
12
(+)(±)
±
DIAGNOSTICS ABS WITH EBD & BA & TRC & VSC SYSTEM
05±851
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
HINT:
Start the inspection from step 1 if you are using the hand±held tester and\
start from step 2 if you are not using
the hand±held tester.
1PERFORM ACTIVE TEST BY HAND±HELD TESTER(SKID CONTROL BUZZER)
(a)Check that skid control buzzer sounds ºONº and ºOFFº with th\
e hand±held tester.
OKREPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)
NG
2INSPECT SKID CONTROL BUZZER ASSY
(a)Disconnect the skid control buzzer connector.
(b)Apply battery positive voltage to the terminals 1 and 2 of the skid control buzzer connector, check that the buzzer
sounds.
NGREPLACE SKID CONTROL BUZZER ASSY
OK
3CHECK HARNESS AND CONNECTOR(SKID CONTROL BUZZER ± SKID CONTROL ECU)
(a)Check for an open or short circuit in harness and connector between terminal \
BZ of the skid control
ECU and skid control buzzer (See page 01±32).
NG REPAIR OR REPLACE HARNESS ORCONNECTOR
OK
REPLACE ABS & TRACTION ACTUATOR ASSY(See page 32±57)

05±924± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FSE))
AVENSIS REPAIR MANUAL (RM1018E)ItemDiagnostic Note Normal Condition Measurement Item/
Display (Range)
PNP SW [NSW]PNP SW Status/
ON or OFFShift lever range is;
P or N: ON
Except P or N: OFF
The shift lever range and these
REVERSEPNP SW Status/
ON or OFFShift lever range is;
R: ON
Except R: OFFThe shift lever range and these
values are different, there are fail-
ures of the PNP switch or shift
cable adjustment
DRIVEPNP SW Status/
ON or OFFShift lever range is;
D and 3: ON
Except D and 3: OFFcable adjustment.
SOLENOID (SLT)Shift Solenoid SLT Status/
ON or OFFIG SW ON: ON
AT FLUID TEMP
ATF Temp. Sensor Value/
min.: ±40C (±40F)
max.: 215C (419F)80C (176F)
(After Stall Test)If the value is º±40C (±40F)º or
º215C (419F)º, ATF temp. sen-
sor circuit is opened or shorted.
5. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows the relay, VSV, actuator and so on to oper-
ate without parts removal. Performing the ACTIVE TEST as the first step of troubleshooting is one of the
methods to shorten the work time.
It is possible to display the DATA LIST during the ACTIVE TEST.
(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 ON.
(e) According to the display on tester, perform the ºACTIVE TESTº.
ItemTest DetailsDiagnostic Note
LINE PRESS UP
[Test Details]
Operate the shift solenoid SLT and raise the line pressure.
[Vehicle Condition]

Vehicle Stopped.

IDL: ON
[Others]
ON: Line pressure up.
OFF: No action (normal operation)
±
LOCK UP
[Test Details]
Control the shift solenoid DSL to set the ATM to the lock±up condition.
[Vehicle Condition]
Vehicle Speed: 60 km/h (37 mph) or more
Possible to check the DSL opera-
tion.
SHIFT
[Test Details]
Operate the shift solenoid valve and set the each shift range by your-
self.
[Vehicle Condition]
Less than 50 km/h (31 mph)
[Others]

Press
button: Shift up

Press  button: Shift down
Possible to check the operation of
the shift solenoid values.
6. PROBLEM SYMPTOM CONFIRMATION
(a) Taking into consideration the results of the customer problem analysis, try to reproduce the symptoms
of the trouble. If the problem is that the transaxle does not shift up, shift down, or the shift point is too
high or too low, conduct the following road test referring to the automatic shift schedule and simulate
the problem symptoms.