key 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 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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±
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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02±2
±
PREPARATION DIAGNOSTICS
AVENSIS REPAIR MANUAL (RM1018E)
(09083±00150)Test Lead SetAIR CONDITIONING SYSTEM
ABS WITH EBD SYSTEM
ELECTRONIC MOTOR POWER
STEERING SYSTEM
MULTIPLEX COMMUNICATION
SYSTEM
ENGINE IMMOBILISER SYSTEM
ABS WITH EBD & BA & TRC & VSC
SYSTEM
WIRELESS DOOR LOCK CONTROL
SYSTEM
COMBINATION METER
KEY REMINDER WARNING SYSTEM
POWER DOOR LOCK CONTROL
SYSTEM
SFI SYSTEM(1AZ±FE)
SFI SYSTEM(1AZ±FSE)
ECD SYSTEM(1CD±FTV)
SFI SYSTEM(1ZZ±FE/3ZZ±FE)
ELECTRONIC CONTROLLED
AUTOMATIC TRANSAXLE
[ECT](U241E(1AZ±FE))
ELECTRONIC CONTROLLED
AUTOMATIC TRANSAXLE
[ECT](U241E(1AZ±FSE))
ELECTRONIC CONTROLLED
AUTOMATIC TRANSAXLE
[ECT](U341E)
09082±00050TOYOTA Electrical Tester SetPOWER DOOR LOCK CONTROL
SYSTEM
(09083±00150)Test Lead SetAIR CONDITIONING SYSTEM
ABS WITH EBD SYSTEM
ELECTRONIC MOTOR POWER
STEERING SYSTEM
MULTIPLEX COMMUNICATION
SYSTEM
ENGINE IMMOBILISER SYSTEM
ABS WITH EBD & BA & TRC & VSC
SYSTEM
WIRELESS DOOR LOCK CONTROL
SYSTEM
COMBINATION METER
KEY REMINDER WARNING SYSTEM
POWER DOOR LOCK CONTROL
SYSTEM
SFI SYSTEM(1AZ±FE)
SFI SYSTEM(1AZ±FSE)
ECD SYSTEM(1CD±FTV)
SFI SYSTEM(1ZZ±FE/3ZZ±FE)
ELECTRONIC CONTROLLED
AUTOMATIC TRANSAXLE
[ECT](U241E(1AZ±FE))
ELECTRONIC CONTROLLED
AUTOMATIC TRANSAXLE
[ECT](U241E(1AZ±FSE))
ELECTRONIC CONTROLLED
AUTOMATIC TRANSAXLE
[ECT](U341E)
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A31032
A32639
A77414
Straight
Pin
Key
Groove
14±174
±
ENGINE MECHANICAL CAMSHAFT (1AZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(c) Put air pressure into the oil port with 150 kpa (1.5 kgf/cm2
21 psi), and turn the camshaft timing gear to the advance
direction (counterclockwise) by hand.
CAUTION:
Cover the paths with shop rag to avoid oil splashing.
HINT:
Depending on the air pressure, the camshaft timing gear will
turn to the advance angle side without applying force by hand.
Also, under the condition that the pressure can be hardly ap-
plied because of the air leakage from the port, there may be the
case that the lock pin could be hardly released.
(d) Remove the fringe bolt of camshaft timing gear.
NOTICE:

Be sure not to remove the other 4 bolts.

If reusing the camshaft timing gear, release the
straight pin lock first, and then install the gear.
13. INSTALL CAMSHAFT TIMING GEAR OR SPROCKET (LEADED GASOLINE) Torque: 54 N
m (551 kgf
cm, 40 ft
lbf)
14. INSTALL CAMSHAFT TIMING GEAR ASSY (UNLEADED GASOLINE)
(a) Put the camshaft timing gear and the camshaft together with the straight pin off the key groove.
(b) Turn the camshaft timing gear assembly to the left direc- tion (as shown in the illustration) while lightly pushing it to-
ward the camshaft. Push further at the position where the
pin gets into the groove.
NOTICE:
Be sure not to turn the camshaft timing gear to the retard
angle side (to the right direction).
(c) Check that there is no clearance between the gear's fringe and the camshaft.
(d) Tighten the fringe bolt with the camshaft timing gear fixed. Torque: 54 N
m (551 kgf
cm, 40 ft
lbf)
(e) Check that the camshaft timing gear can move to the re- tard angle side (to the right direction), and is locked at the
most retarded position.
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A32639
A77414
Straight
Pin
Key
Groove
A77284
A77415Bearing Cap No. 1 Bearing Cap No. 3
5
312 4
±
ENGINE MECHANICAL CAMSHAFT (1AZ±FSE)
14±243
AVENSIS REPAIR MANUAL (RM1018E)
(d) Remove a fringe bolt of camshaft timing gear.
NOTICE:

Be sure not to remove the other 4 bolts.

If reusing the camshaft timing gear, release the
straight pin lock first, and then install the gear.
17. INSTALL CAMSHAFT TIMING GEAR ASSY
(a) Put the camshaft timing gear and the camshaft together with the straight pin off the key groove.
(b) Turn the camshaft timing gear assembly to the left direc- tion (as shown in the illustration) while lightly pushing it to-
ward the camshaft. Push further at the position where the
pin gets into the groove.
NOTICE:
Be sure not to turn the camshaft timing gear to the retard
angle side (to the right direction).
(c) Check that there is no clearance between the gear's fringe and the camshaft.
(d) Tighten the fringe bolt with the camshaft timing gear fixed. Torque: 54 N
m (551 kgf
cm, 40 ft
lbf)
(e) Check that the camshaft timing gear can move to the re-
tard angle side (to the right direction), and is locked at the
most retarded position.
18. INSTALL CAMSHAFT
(a) Turn the crankshaft pulley, and align its groove with timing mark 0 of the timing chain cover.
(b) Install the timing chain on the camshaft timing gear, with
the painted links aligned with the timing marks on the
camshaft timing gear.
(c) Examine the front marks and numbers and tighten the bolts in the order shown in the illustration.
Torque:
Bearing cap No. 1 30 N
m (301 kgf
cm, 22 ft
lbf)
Bearing cap No. 3 9.0 N
m (92 kgf
cm, 80 in.
lbf)
19. INSTALL NO.2 CAMSHAFT
(a) Put the No. 2 camshaft on the cylinder head with the painted links of chain aligned with the timing mark on the
camshaft timing gear.
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A79428
N´m (kgf´cm, ft´lbf): Specified torque

Non±reusable part

Gasket
18 (184, 13)
27 (270, 20)22 (224, 16)13 (135, 9.7)

Gasket

O±ring
Fuel Injector
Back±up Ring No. 1



Injection Nozzle Seat
8.8 (90, 78 in.
lbf)

Oil Seal
8.8 (90, 78 in.
lbf)
20 (204, 15)
Washer
Nozzle Holder Clamp Nozzle Leakage
Pipe Assy
Injector Assy Cylinder Head Cover Sub±assy
Gasket
Camshaft Bearing Cap No. 2 Camshaft Camshaft
Camshaft Carrier
Camshaft Oil Seal
Retainer
88 (899, 65)
Camshaft Timing Pulley Set Key
20 (204, 15)
* 42 (428, 31)
46 (469, 34)
Injection Pipe
Clamp No. 2
Injection Pipe
Sub±assy


O±ring
21 (214, 15)
Vacuum Pump Assy
5.0 (51, 44 in.
lbf)

Nozzle Holder Seal
* Use SST
* 42 (428, 31)
46 (469, 34)
±
ENGINE MECHANICAL CAMSHAFT (1CD±FTV)
14±317
AVENSIS REPAIR MANUAL (RM1018E)
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141C8±01
SSTA61187
14±318
±
ENGINE MECHANICALCAMSHAFT(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
REPLACEMENT
1.REMOVE FRONT WHEEL RH
2.REMOVE ENGINE UNDER COVER SUB±ASSY NO.1
3.ENGINE UNDER COVER RH
4.REMOVE RADIATOR SUPPORT OPENING COVER
5.REMOVE ENGINE ROOM COVER SIDE
6.REMOVE ENGINE COVER NO.1
(a)Remove the 5 nuts and the engine cover.
7.REMOVE AIR CLEANER ASSY (See page 11±60)
8.REMOVE VACUUM RESERVOIR SUB±ASSY
(a)Disconnect the 2 vacuum hoses and the connector.
(b)Remove the 2 bolts and the vacuum reservoir.
9.REMOVE AIR TUBE NO.1 (See page 14±270)
10.REMOVE INJECTOR DRIVER (See page 14±286)
11. REMOVE V (COOLER COMPRESSOR TO CRANKSHAFT PULLEY) BELT NO.1 (See page 14±269)
12.REMOVE GENERATOR V BELT (See page 14±269)
13.SEPARATE POWER STEERING IDLE PULLEY BRACKET (See page 14±286)
14.REMOVE ENGINE MOUNTING INSULATOR SUB±ASSY RH (See page 14±307)
15.REMOVE CRANKSHAFT PULLEY (See page 14±307) SST 09213±54015 (90105±08076), 09330±00021, 09950±50013 (0995\
1±05010, 09952±05010, 09953±05020, 09954±05031)
16.REMOVE IDLER PULLEY SUB±ASSY (See page 14±307)
17.REMOVE TIMING BELT NO.2 COVER (See page 14±307)
18.REMOVE TIMING BELT NO.1 COVER (See page 14±307)
19. REMOVE TIMING BELT GUIDE
20.REMOVE TRANSVERSE ENGINE ENGINE MOUNTING BRACKET (See page 14±307)
21.SET NO. 1 CYLINDER TO TDC/COMPRESSION (See page 14±307)
22.REMOVE TIMING CHAIN COVER PLATE (See page 14±307)
23.REMOVE TIMING BELT (See page 14±307)
24.REMOVE CAMSHAFT POSITION SENSOR (See page 10±63)
25. REMOVE CAMSHAFT TIMING PULLEY
(a) Using SST, remove the pulley bolt.SST 09960±10010 (09962±01000, 09963±01000)
(b) Remove the timing pulley.
HINT:
Using a plastic±faced hammer, tap out the pulley.
(c) Remove the set key.
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A62592
SST
A09663
:Seal Packing
±
ENGINE MECHANICALCAMSHAFT(1CD±FTV)
14±323
AVENSIS REPAIR MANUAL (RM1018E)
(c)Install the oil seal retainer with the 4 bolts. Tighten the 4
bolts uniformly in several steps.
Torque: 8.8 N
m (90 kgf
cm, 78 in.
lbf)
46.INSTALL CAMSHAFT TIMING PULLEY
(a)Install the pulley set key to the groove of the camshaft.
(b)Align the keyway of the timing pulley with the key located on the camshaft, slide the pulley into place.
(c)Using SST, install the pulley bolt. SST09960±10010 (09962±01000, 09963±01000)
Torque: 88 N
m (899 kgf
cm, 65 ft
lbf)
47.INSTALL CAMSHAFT POSITION SENSOR (See page 10±63)
48.INSTALL INJECTOR ASSY (See page 11±60)
49.INSTALL NOZZLE LEAKAGE PIPE ASSY(See page 11±60) SST09992±00242
50.INSTALL CYLINDER HEAD COVER SUB±ASSY
(a)Remove any old packing (FIPG) material.
(b)Apply seal packing to the cylinder head.Seal packing: Part No. 08826±00080 or equivalent
(c)Install the gasket to the cylinder head cover.
(d)Install the cylinder head cover with the 10 bolts.
Torque: 13 N
m (135 kgf
cm, 9.7 ft
lbf)
51.INSTALL NOZZLE HOLDER SEAL
(a)Install 4 new nozzle holder seals.
52.INSTALL VACUUM PUMP ASSY Torque: 21 N
m (214 kgf
cm,15 ft
lbf)
53.INSTALL INJECTION PIPE SUB±ASSY NO.1(See page 11±60)
NOTICE:
When assembling the pipes, perform the operation with the
engine cold under room temperature.
(a) Remove the vinyl or the plastic bag from the injector and vinyl tape from the common rail.
(b) Temporarily install the injection pipe.
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A62191
Advanced
Side Path
Retard
Side Path
A62192
Hold Pressure
Decompress Advanced
Side Path
Retard
Side Path
A62193
Straight Pin
Fringe Bolt
A62194
Straight Pin
Key Groove
14±70
±
ENGINE MECHANICAL CAMSHAFT (1ZZ±FE/3ZZ±FE)
AVENSIS REPAIR MANUAL (RM1018E)
(c) Put air pressure into two broken paths (the advance side path and the retard side path) with about 150 kPa {1.5
kgf
cm}.
CAUTION:
Cover the paths with shop rag to avoid oil splashing.
(d) Confirm if the camshaft timing gear assembly revolves in the timing advance direction when weakening the air
pressure of the timing retard path.
HINT:
When the lock pin is released, the camshaft timing gear re-
volves in the advance direction.
(e) When the camshaft timing gear comes to the most ad- vanced position, take out the air pressure of the timing re-
tard side path, next, take out that of timing advance side
path.
CAUTION:
Camshaft timing gear assembly occasionally shifts to the
retard side abruptly, if the air compression of the advanced
side path is released first. It often causes the breakage of
the lock pin.
(f) Remove the fringe bolt of camshaft timing gear assembly.
NOTICE:

Be sure not to remove the other 4 bolts.

In case of reusing the camshaft timing gear, release
the straight pin lock first, and then install the gear.
17. INSTALL CAMSHAFT TIMING GEAR ASSY
(a) Put the camshaft timing gear assembly and the camshaft together with the straight pin off the key groove.
(b) Turn the camshaft timing gear assembly clockwise (as shown in the illustration) while pushing it lightly against
the camshaft. Push further at the position where the pin
gets into the groove.
CAUTION:
Be sure not to turn the camshaft timing gear to the retard
angle side (to the right angle).
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A77382
Groove90


A77383
Groove
A66833
B11424
±
ENGINE MECHANICAL CHAIN SUB±ASSY (1AZ±FE)
14±145
AVENSIS REPAIR MANUAL (RM1018E)
37. REMOVE NO.2 CHAIN SUB±ASSY
(a) Turn the crankshaft counterclockwise 90
, and align an
adjusting hole of the oil pump drive shaft gear with the
groove of the oil pump.
(b) Put a 4 mm diameter bar in the adjusting hole of the oil pump drive shaft gear to lock in position, and remove the
nut.
(c) Remove the bolt, and then remove the chain tensioner and spring.
(d) Remove the oil pump drive shaft gear and chain No. 2.
38. INSTALL NO.2 CHAIN SUB±ASSY
(a) Set the crankshaft key to the left side position.
(b) Orient the flat portion of the drive shaft upward.
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