2003 TOYOTA AVENSIS air

NEW MODEL OUTLINE


\b


\b
Manual Air Conditioner Control Panel
for LHD model Automatic Air Conditioner Control Panel
for LHD model


\b
Automatic Air Conditioner Control Panel
Driver Side
Temperature Front Passenger
Side Temperature
When BI-level Mode
Warm Air
Cold Air


\b
Air warmed by the evaporator
Heat released by the evaporator
Blower Air Heater Core
Compressor
Hot Gas Tank
Magnet Valve Refrigerant
Aaccumulator Tank
Condenserr Expansion Valve
MO-20
Air Conditioner System

A manual air conditioner is standard equipment on ENTRY grade models and an automatic
air conditioner on MID TECHNICAL and MID ELEGANT grade models.

The automatic air conditioner employs a left / right independent temperature control system.
Power Heater System

1CD-FTV engine models feature three power heater systems: PTC, hot-gas, \
and combustion.

The hot-gas heater was newly developed to enhance the heater performance\
of the diesel
engine.

The hot-gas heater features an orifice, magnetic valve, and hot-gas tank\
added to the air
conditioner components. Refrigerant raised to a high temperature and pressure by th\
e
compressor is guided to the evaporator and the heat is released.
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NEW MODEL OUTLINE


SRS Airbag
SRS Knee Airbag


SRS Curtain Shield Airbag SRS Side Airbag
MO-26
SAFETY
SRS (Supplemental Restraint System) Airbag System

A newly developed SRS knee airbag is standard equipment for the driver's seat on the new
Avensis.

The SRS knee airbag is positioned in the lower part of the instrument pa\
nel on the driver's side
to receive the impact of the driver's lower body when he or she shifts forward in the event of
a frontal collision, contributing to prevention of secondary impact to t\
he lower body.

Dual-stage SRS airbags are standard equipment for the driver and front p\
assenger seats. In
the event of a severe frontal collision, the airbags function with the s\
eat belts to help reduce
the impact on the driver's and front passenger's head and chest. The seat position sensor is
adopted only for the driver's seat to help the driver side SRS airbag deploy at the right moment.

SRS side airbags (driver / front passenger seats) which help ease side\
impacts, are standard
equipment.

SRS curtain shield airbags (front/rear seats) that help ease side impa\
cts are standard
equipment for all models except 1AZ-FE engine models. They are available as an op\
tion for
1AZ-FE engine models.
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MO
NEW MODEL OUTLINEMO-29


: Standard OP: Option
EuropeGeneral
ENTRYMID
TECHNICALMID
ELEGANTGeneralCountries
Body Electrical
HeadlightProjector



HeadlightHID (High lntensity Discharge)ÐOPOPÐ
Headlight BeamManual


Ð
Level Control SystemAutomaticÐOPOPÐ
Headlight Cleaner SystemOP*5OPOPÐ
FrontExcept for 1AZ-FEOP

Ð
Fog LightFront1AZ-FEÐOPOPOP*4
Rear


Ð
Illuminated Entry System




Navigation SystemÐOPOPÐ
Multi information DisplayOP

Ð
8-speaker OnlyOPOPOPOP
Audio SystemRadio / CD / Cassette / 8-speaker




Steering Switch


Ð
Manual
ÐÐ

Air ConditionerAutomaticÐ

Ð
WithoutOPÐÐOP
Conventional TypeExcept for 1CD-FTV




HeaterPTC Type1CD-FTVOPÐÐÐHeaterHot Gas Type1CD-FTV


Ð
Combustion TypeLHD of 1CD-FTVÐOPOPÐ
WiperFrontAdjustment Interval INT Function
ÐÐ
Wiper
SystemFrontRaindrop Sensing FunctionÐ

ÐSystemRearIntermittent FunctionLiftback & Wagon


Ð
Power Window
Front Door One-Motion Auto Up-and-Down,
Jam Protection Function
ÐÐ

SystemAll-Door One-Motion Auto Up-and-Down,
Jam Protection FunctionOP

OP
Door Lock ControlPower Door Look Control System



Door Lock Control
SystemWireless Door Look Remote Control System


ÐSystemDouble Locking SystemExcept for 1AZ-FE & LHD


Ð
Engine ImmobiliserExcept for 1AZ-FE



System1AZ-FEÐOPOPÐ
Theft Deterrent SystemExcept for 1AZ-FE & 1CD-FTV


Ð
5
Driver & Front Passenger & SideExcept for 1AZ-FEOPÐÐÐ
SRS*5 Airbag& Knee Airbags1AZ-FEÐ



SystemDriver & Front Passenger & SideExcept for 1AZ-FE



& Knee & Curtain Shield Airbags1AZ-FEÐOPOPÐ
Cruise Control System1AZ-FSE & 1CD-FTVÐOPOPÐ
Outside RearElectrical Retractable with HeaterÐ

Ð
View MirrorElectrical RetractableÐÐÐ

Inside RearAutomatic Glare-Resistant EC (Electrical) TypeÐ

Ð
View MirrorManual Glare-Resistant Type
ÐÐ

Power Tilt Up-and-Sliding Moon RoofExcept for 1AZ-FSEOPOPOPÐ
(with Jam Protection Function)1AZ-FSEÐOP*6OP*6Ð
*4: LHD Models
*5: Supplemental Restraint System
*6: Except for Automatic Transaxle of Wagon Models
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010B8±08
D25086
WRONGCORRECT
D25087
Looseness of CrimpingCore Wire Terminal
Deformation
Pull Lightly
01±32
±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
AVENSIS REPAIR MANUAL (RM1018E)
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
1. BASIC INSPECTION
(a) RESISTANCE MEASURING CONDITION OF ELECTRONIC PARTS (1) Unless stated, all resistance is measured at an ambient temperature of 20 C (68 F). As the re-
sistance may be outside the specifications if measured at high temperatures imme\
diately after
the vehicle has been running, measurements should be made when the engine h\
as cooled
down.
(b) HANDLING OF CONNECTOR(1) When removing the connector with lock, press the
connector in the direction of the engagement and
remove the lock by lightly pressing the lock claw.
(2) When removing the connector, do not hold the har- ness, but hold the connector.
(3) Before connecting the connector, check that there is no deformation, damage or missing terminals.
(4) The connector with a lock should be securely con- nected until it makes a ºclickº sound.
(5) When checking the connector with a Toyota electri- cal tester, check it from the backside (harness side)
of the connector using a mini test lead.
NOTICE:

As a water proof connector cannot be checked from
the backside, check by connecting the sub±harness.

Do not damage the terminals by moving the inserted
tester needle.
(c) CONNECTOR CHECKING POINTS
(1) Checking when the connector is connected:By holding the connector, check the inserted condi-
tion and locking efficiency (engaged condition).
(2) Checking when the connector is removed: Check by lightly pulling the wire harness (missing
terminal, terminal crimping condition, core wire
break).
Check visually for any rust, metal particles, water
and bent terminals (rust, mixing of foreign object,
terminal deformation).
NOTICE:
When testing a gold±plated female terminal, always use a
gold±plated male terminal.
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D25088
Same terminal as
a male terminal
D20024
WRONG
CORRECT
D01557
WRONG
Z17004
C
SensorOPEN
1 2 B
1
2 1
2 1
2A
Fig. 1
ECU
±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±33
AVENSIS REPAIR MANUAL (RM1018E)
(3) Checking of the contact pressure of the terminal:
Prepare a spare male terminal.
Insert it into a female terminal, check the engaged
condition and sliding resistance.
(d) REPAIR METHOD OF CONNECTOR TERMINAL (1) If there is on the contact point, clean the contact
point using an air gun or shop rag. However, never
polish the contact point using sand paper as the
platings may come off.
(2) In case of abnormal contact pressure, replace the
female terminal. However, if a male terminal is gold±
plated (gold color), use gold±plated female terminal
and if it is silver±plated (silver color), use silver±
plated female terminal.
(e) HANDLING OF WIRE HARNESS (1) When removing the wire harness, check the posi-tioning of the wiring and clamping before starting
work in order to be able to restore it correctly.
(2) Never twist, pull or loosen the wire harness more
than necessary.
(3) Never allow the wire harness to come into contact with a high±temperature, rotating, moving, vibrating
or sharp (edge of the panel, tip of the screw, etc.)
part.
(4) When installing parts, never let the wire harness be interfered with.
(5) Never cut or break the cover of the wire harness. If one is cut or broken, replace it or securely repair it
with electrical tape.
2. CHECK OPEN CIRCUIT
(a) For the open circuit in the wire harness in Fig. 1, perform a continuity check in step (b) or a voltage check in step (c)
to locate the section.
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Z17005
Fig. 2
Sensor
C BA
ECU
1 2 1
2 2
1
B04722
Fig. 3
Sensor
B2
A
1
2 1
2 21
C
B1
1
2 ECU
Z17007
Fig. 4
Sensor
C BA
1
2 1
2 2
15V
5V
0V
01±34
±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
AVENSIS REPAIR MANUAL (RM1018E)
(b) Check the continuity. (1) Disconnect connectors A and C and measure theresistance between them.
Resistance: 1
or less
HINT:
Measure the resistance while lightly shaking the wire harness
vertically and horizontally. In the case of Fig. 2:
Between terminal 1 of connector A and terminal 1
of connector C
No continuity (open)
Between terminal 2 of connector A and terminal 2
of connector C
Continuity
Therefore, the cause is an open circuit between ter-
minal 1 of connector A and terminal 1 of connector
C.
(2) Disconnect connector B and measure the resis-
tance between the connectors.
In the case of Fig. 3:
Between terminal 1 of connector A and terminal 1
of connector B1
Continuity
Between terminal 1 of connector B2 and terminal 1
of connector C
No continuity (open)
Therefore, the cause is an open circuit between ter-
minal 1 of connector B2 and terminal 1 of connector
C.
(c) Check the voltage. (1) In a circuit in which voltage is applied (to the ECUconnector terminal), an open circuit can be checked
by conducting a voltage check.
As shown in Fig. 4, with each connector still con-
nected, measure the voltage between the body
ground and terminal 1 of connector A at the ECU 5
V output terminal, terminal 1 of connector B, and
terminal 1 of connector C, in that order.
(2) If the results are: 5 V: Between terminal 1 of connector A and body
ground
5 V: Between terminal 1 of connector B and body
ground
0 V: Between terminal 1 of connector C and body
ground
Therefore, the cause is an open circuit in the wire
harness between terminal 1 of connector B and ter-
minal 1 of connector C.
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Z17008
CSHORT
1
2 B
1
2 1
2
A
Fig. 5
Z17009
Fig. 6
Sensor
C BA
ECU
1
2 1
2 2
1
Z17808
Fig. 7
Sensor B2
A
11 1
CB1
1ECU
2 22 2
±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS01±35
AVENSIS REPAIR MANUAL (RM1018E)
3. CHECK SHORT CIRCUIT
(a) If the wire harness is ground shorted as shown in Fig. 5,
locate the section by conducting a continuity check with
the body ground in step (b).
(b) Check the continuity with the body ground. (1) Disconnect connectors A and C and measure the
resistance between terminals 1 and 2 of connector
A and the body ground.
Resistance: 10 k
or higher
HINT:
Measure the resistance while lightly shaking the wire harness
vertically and horizontally.
In the case of Fig. 6:
Between terminal 1 of connector A and body
ground Continuity (short)
Between terminal 2 of connector A and body
ground No continuity
Therefore, the cause is a short circuit between ter-
minal 1 of connector A and terminal 1 of connector
C.
(2) Disconnect connector B and measure the resis- tance between terminal 1 of connector A and the
body ground, and terminal 1 of connector B2 and
the body ground.
In the case of Fig. 7:
Between terminal 1 of connector A and body
ground No continuity
Between terminal 1 of connector B2 and body
ground Continuity (short)
Therefore, the cause is a short circuit between ter-
minal 1 of connector B2 and terminal 1 of connector
C.
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IN0383
ExampleGround
IN0384
Ground
ECU Side
W/H Side
Ground
01±36±
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
AVENSIS REPAIR MANUAL (RM1018E)
4. CHECK AND REPLACE ECU
NOTICE:

Start an inspection of the connector from the back-
side of the connector on the wire harness side with
the connector connected to the ECU.

When no measurement condition is specified, per-
form the inspection with the engine stopped and also
the ignition switch ON.
(a) First check the ECU ground circuit. If it is faulty, repair it. If it is normal, the ECU could be faulty. In this case, re-
place the ECU with one that functions normally and check
if the symptoms appear.
(1) Measure the resistance between the ECU groundterminal and body ground.
Resistance: 1
or less
(2) Disconnect the ECU connector, check the ground terminals on the ECU side and wire harness side for
bends and check the contact pressure.
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