2003 TOYOTA AVENSIS automatic transmission

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Page 56 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual 010B6±13
±
INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±21
AVENSIS REPAIR MANUAL (RM1018E)
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
There are many ECU controlled

010B6±13
±
INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±21
AVENSIS REPAIR MANUAL (RM1018E)
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
There are many ECU controlled systems used in the AVENSIS. In general, ECU controlled system are con-
sidered to be very intricate and require a high level of technical knowledge an\
d expert skill to troubleshoot.
The fact is, however, that if you proceed by inspecting the circuits one by one, troubleshoo\
ting of these sys-
tems is not complex. If you have adequate understanding of the system and ba\
sic knowledge of electricity,
the problem can be accurately diagnosed and fixed. This manual is design\
ed based on the above principle
to help service technicians perform accurate and effective troubleshooting, and is compiled for the following
major ECU controlled systems:
The troubleshooting procedures are described on the following pages.
SystemPage
1. SFI System [1ZZ±FE, 3ZZ±FE]05±1
2. SFI System [1AZ±FE]05±143
3. SFI System [1AZ±FSE]05±290
4. ECD System [1CD±FTV]05±523
5. ABS with EBD System05±696
6. ABS with EBD & BA & TRC & VSC System05±752
7. Electronic Controlled Automatic Transmission [ECT] [U241 (1AZ±FE)]05±856
8. Electronic Controlled Automatic Transmission [ECT] [U241 (1AZ±FSE)]05±915
9. Electronic Controlled Automatic Transmission [ECT] [U341]05±980
10.Electronic Motor Power Steering System05±1042
11. Air Conditioning System05±1088
12.Combustion Type Power Heater System05±1161
13.Supplemental Restraint System05±1181
14.Audio System05±1393
15.Navigation System05±1435
16.Combination Meter05±1497
17.Power Door Lock Control System05±1534
18.Wireless Door Lock Control System05±1568
19.Key Reminder Warning System05±1586
20.Engine Immobiliser System05±1599
21.Theft Deterrent System05±1627
22.Multiplex Communication System05±1654
23.Cruise Control System05±1697
FOR USING HAND±HELD TESTER
Before using the tester, the tester's operator manual should be read thoroughly.
If the tester cannot communicate with the ECU controlled systems when you \
have connected the cable
of tester to the DLC3, turned the ignition switch ON and operated the test\
er, there is a problem on the
vehicle side or tester side.
(1) If the communication is normal when the tester is connected to another veh\
icle, inspect the diag-
nosis data link line (Bus line) or ECU power circuit of the vehicle.
(2) If the communication is still impossible when the tester is connected to a\
nother vehicle, the prob- lem is probably in the tester itself, so perform the Self Test procedures outlined in the Tester Oper-
ator 's Manual.
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Page 60 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual ±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±25
AVENSIS REPAIR MANUAL (RM1018E)
SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
HINT:
The diagnostic system in AVENSIS has various

±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±25
AVENSIS REPAIR MANUAL (RM1018E)
SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
HINT:
The diagnostic system in AVENSIS has various functions. The first function is the Diagnostic Trouble
Code (DTC) Check, in which a malfunction in the signal circuits to the ECU is stored in code form in
the ECU memory. Another function is the Input Signal Check, which checks if the signals from various
switches are sent to the ECU correctly. By using these check functions, it is possible to quickly narrow
down potential problem areas and troubleshooting can be performed effectively. The diagnostic func-
tions are incorporated in the following systems in the AVENSIS.
SystemDiagnostic Trouble
Code CheckInput Signal Check(Sensor Check)Diagnostic Test
Mode (Active Test)
SFI System (1AZ±FE/1AZ±FSE, 1ZZ±FE/3ZZ±FE)
(with Check Mode)
ECD System (1CD±FTV)
(with Check Mode)
ABS with EBD System
ABS with EBD & BA & TRC & VSC System
Electronically Controlled Automatic Transmission [ECT]
(with Check Mode)
Air Conditioning System
Supplemental Restraint System
Audio System
Power Door Lock Control System
Wireless Door Lock Control System
Key Reminder Warning System
Engine Immobiliser System
Theft Deterrent System
Multiplex Communication System
Cruise Control System
In the DTC check, it is very important to determine whether the problem indicated by the DTC is still
occurring or has occurred in the past but returned to normal at present. In addit\
ion during the problem
symptom check, it a check must be made on whether the malfunction indicated by \
the DTC is directly
related to the problem symptom or not. For this reason, the DTC should be checked before and after
symptom confirmation to determine the current conditions. If this is not done, \
it may, depending on the
case, result in unnecessary troubleshooting for systems that are operati\
ng normally. This would make
more difficult to detect the problem area or to try to repair irrelevant areas. \
Therefore, always follow
the procedures in the correct order and perform the DTC check.
A flow chart showing how to proceed with troubleshooting using the diagnostic trouble\
code (DTC)
check is shown the this page. This flow chart shows how to utilize the DTC check effectively. Then,
by carefully checking the results, this chart indicates how to proceed either to the DTC troubleshooting
or to the troubleshooting of the problem symptoms table.
1 DTC check
2 Make a note of DTCs displayed and then clear the memory
3 Symptom confirmation
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Page 87 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual 010B9±11
±
INTRODUCTION TERMS
01±37
AVENSIS REPAIR MANUAL (RM1018E)
TERMS
ABBREVIATIONS USED IN THIS MANUAL
AbbreviationsMeaning
ABSAnti±Lock Brake System
A/CAir Conditioner
ACAlternating Curren

Page 96 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual 022L4±02
02±36
±
PREPARATION AUTOMATIC TRANSMISSION / TRANS
AVENSIS REPAIR MANUAL (RM1018E)
AUTOMATIC TRANSMISSION / TRANS
PREPARATION
SST
07110±58060Air Conditioner Service Tool SetTRANSMISSION

Page 97 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual ±
PREPARATION AUTOMATIC TRANSMISSION / TRANS
02±37
AVENSIS REPAIR MANUAL (RM1018E)
(09316±00011)Replacer PipeFRONT DIFFERENTIAL OIL
SEAL(U241E)
09350±32014TOYOTA Automatic Transmission
Tool Set

Page 98 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual 02±38
±
PREPARATION AUTOMATIC TRANSMISSION / TRANS
AVENSIS REPAIR MANUAL (RM1018E)
(09726±02041)ReplacerFRONT DIFFERENTIAL OIL
SEAL(U341E)
09930±00010Drive Shaft Nut ChiselAUTOMATIC TRANSAXLE
A

Page 99 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual ±
PREPARATION AUTOMATIC TRANSMISSION / TRANS
02±39
AVENSIS REPAIR MANUAL (RM1018E)
09090±04020Engine Sling DeviceAUTOMATIC TRANSAXLE
ASSY(U241E)
AUTOMATIC TRANSAXLE
ASSY(U341E)
95416±00140Gas Le

Page 159 of 2234

TOYOTA AVENSIS 2003 Service Repair Manual 030A9±10
±
SERVICE SPECIFICATIONS AUTOMATIC TRANSMISSION / TRANSAXLE
03±45
AVENSIS REPAIR MANUAL (RM1018E)
AUTOMATIC TRANSMISSION / TRANSAXLE
SERVICE DATA
U341E (RHD)
Line pressure (Wheel locked)

030A9±10
±
SERVICE SPECIFICATIONS AUTOMATIC TRANSMISSION / TRANSAXLE
03±45
AVENSIS REPAIR MANUAL (RM1018E)
AUTOMATIC TRANSMISSION / TRANSAXLE
SERVICE DATA
U341E (RHD)
Line pressure (Wheel locked)
Engine idlingD range
R range
AT stall (Throttle valve fully opened) D range
R range
370 ± 410 kPa (3.8 ± 4.2 kgf cm2, 54 ± 60 psi)
540 ± 640 kPa (5.5 ± 6.5 kgf cm2, 78 ± 92 psi)
1,110 ± 1,230 kPa (11.3 ± 12.5 kgf cm
2, 161 ± 178 psi)
1,700 ± 1,810 kPa (17.3 ± 18.5 kgf cm2, 246 ± 263 psi)
Engine stall revolution D and R range2,400 150 rpm
Time lag N D range
N R rangeLess than 1.2 seconds
Less than 1.5 seconds
Engine idle speed
(A/C OFF) N range
650 50 rpm
Drive plate runout Max.
Torque converter clutch runout Max.0.20 mm (0.0079 in.)
0.30 mm (0.0118 in.)
Differential oil seal drive in depthLH side
RH side2.7 0.5 mm (0.106 0.020 in.)
0 0.5 mm (0 0.020 in.)
Shift schedule
D range
(Throttle valve fully opened) 1 2
2 3
3 4
4 3
3 2
2 1
(Throttle valve fully closed) 3 4
4 3
2 range
(Throttle valve fully opened) 1 2
3 2
2 1
L range
(Throttle valve fully opened) 3 2
2 1
53 ± 59 km/h (33 ± 37 mph)
100 ± 108 km/h (62 ± 67 mph)
156 ± 165 km/h (97 ± 103 mph)
151 ± 159 km/h (94 ± 99 mph)
91 ± 99 km/h (57 ± 62 mph)
43 ± 47 km/h (27 ± 29 mph)
36 ± 40 km/h (22 ± 25 mph)
31 ± 35 km/h (19 ± 22 mph)
53 ± 59 km/h (33 ± 37 mph)
96 ± 103 km/h (60 ± 64 mph)
43 ± 47 km/h (27 ± 29 mph)
96 ± 103 km/h (60 ± 64 mph)
48 ± 52 km/h (30 ± 32 mph)
Lock±up point Throttle valve opening 5 %
O/D gear Lock±up ON
Lock±up OFF
3rd gear (3 position only) Lock±up ON
Lock±up OFF
67 ± 71 km/h (42 ± 44 mph)
61 ± 66 km/h (38 ± 41 mph)
114 ± 123 km/h (71 ± 76 mph)
109 ± 117 km/h (67 ± 73 mph)
U341E (LHD)
Line pressure (Wheel locked) Engine idlingD range
R range
AT stall (Throttle valve fully opened) D range
R range
370 ± 410 kPa (3.8 ± 4.2 kgf cm2, 54 ± 60 psi)
540 ± 640 kPa (5.5 ± 6.5 kgf cm2, 78 ± 92 psi)
1,110 ± 1,230 kPa (11.3 ± 12.5 kgf cm
2, 161 ± 178 psi)
1,700 ± 1,810 kPa (17.3 ± 18.5 kgf cm2, 246 ± 263 psi)
Engine stall revolution D and R range2,400 150 rpm
Time lag N D range
N R rangeLess than 1.2 seconds
Less than 1.5 seconds
Engine idle speed
(A/C OFF) N range
650 50 rpm
Drive plate runout Max.
Torque converter clutch runout Max.0.20 mm (0.0079 in.)
0.30 mm (0.0118 in.)
Differential oil seal drive in depthLH side
RH side2.7 0.5 mm (0.106 0.020 in.)
0 0.5 mm (0 0.020 in.)
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