TOYOTA AVENSIS 2005 Service Repair Manual

±
DIAGNOSTIC SELECTRONI C CONTROLLED AU TOM ATIC
TRANSAXLE [ECT ](U241E(1AZ±FE))05±857
A VENSIS RE PAIR MANUAL (RM1018E)
9 DTC Check ( See page 05±863 )
DTC is not output: Go to step 10
DTC is output: Go to step 17
10 Basic Inspection ( See page 40±2, 40±8 and 40±69 )
NG Go to step 19
OK
1 1 Mechanical System Test ( See page 05±863 )
NG Go to step 16
OK
1 2 Manual Shifting T est ( See page 05±863 )
NG Go to step 14
OK
1 3 Problem Symptoms T able Chapter 1 ( See page 05±879 )
NG Go to step 18
OK
1 4 Problem Symptoms T able Chapter 2 ( See page 05±879 )
NG Go to step 16
OK
1 5 Problem Symptoms T able Chapter 3 ( See page 05±879 )
NG
16 Part Inspection
Go to step 19
17 DTC Chart ( See page 05±876 )

05±858±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
18Circuit Inspection (See page 05±882)
19 Identification of Problem
20 Repair
21 Confirmation Test
End
When not using hand±held tester, troubleshoot in accordance with the proce-
dure on the following pages.
1 Vehicle Brought to Workshop
2Customer Problem Analysis (See page 05±862)
3Check and Clear DTCs (See page 05±863)
4 Problem Symptom Confirmation
Symptom does not occur: Go to step 5
Symptom occur: Go to step 6
5Symptom Simulation (See page 01±22)

±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))05±859
AVENSIS REPAIR MANUAL (RM1018E)
6DTC Check ( See page 05±863 )
DTC is not output: Go to step 7
DTC is output: Go to step 14
7Basic Inspection ( See page 40±2, 40±8 and 40±69 )
NG Go to step 16
OK
8 Mechanical System Test ( See page 05±863 )
NG Go to step 13
OK
9 Manual Shifting T est ( See page 05±863 )
NG Go to step 11
OK
1 0 Problem Symptoms T able Chapter 1 ( See page 05±879 )
NG Go to step 15
OK
1 1 Problem Symptoms T able Chapter 2 ( See page 05±879 )
NG Go to step 13
OK
1 2 Problem Symptoms T able Chapter 3 ( See page 05±879 )
NG
13 Part Inspection
Go to step 16
14 DTC Chart ( See page 05±876 )

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)