2005 TOYOTA AVENSIS add mode

Illustration:
what to do and where
Component part No. Detailed text: how to perform task
Task heading: what to do
Set part No
D31009
01±2
± INTRODUCTIONHOW TO USE THIS MANUAL
AVENSIS REPAIR MANUAL (RM1018E)
(c) Tightening torque, grease application area, and non±reusable parts are described as important points
in the procedures.
NOTICE:
There are cases where such information can only be explained by using an illustration. In these
cases, all the information such as torque, oil, etc. are described in the illustration.
(d) Installing procedures are performed in the reverse order of the removal and only the important points
are described.
(e) Only items with points are described in the procedure, and the operational portion and content are
placed using an illustration. In the explanations, details of the operational method, standard value and
notices are placed.
(f) There may be a case where the illustrations of similar models are used. In that case, specific details
may be different from the actual vehicle.
(g) The procedures are presented in a step±by±step format:
(1) The illustration shows what to do and where to do it.
(2) The task heading tells what to do.
(3) The explanation text tells how to perform the task and gives other information such as specifica-
tions and warnings.
Example:
HINT:
This format provides an experienced technician with a FAST TRACK to the necessary information. The task
heading can be read at a glance when necessary and the text below provides detailed information. Important
specifications and warnings always are written in bold type to stand out from the rest of the text.
5. SERVICE SPECIFICATIONS
(a) Specifications are presented in bold type throughout the manual. You never have to leave the proce-
dure to look up your specifications. The specifications are also found in the Service Specifications sec-
tion for quick reference.
6. TERMS DEFINITION
CAUTIONIndicates the possibility of injury to you or other people.
NOTICEIndicates the possibility of damage to the components being repaired.
HINTProvides additional information to help you to perform the repair efficiently.

± INTRODUCTIONHOW 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 addition 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 operating 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

05CDU±01
FI2547
A76859
Hand±Held Tester
DLC3
05±294
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description for Euro±OBD (European spec.)

When troubleshooting Euro±OBD vehicles, the
only difference from the usual troubleshooting pro-
cedure is that you connect an OBD scan tool com-
plying with ISO 15031±4 or a hand±held tester to
the vehicle, and read off various data output from
the vehicle's ECM.

Euro±OBD regulations require that the vehicle's
on±board computer illuminates the check engine
warning light (CHK ENG) on the instrument panel
when the computer detects a malfunction in the
emission control system / components or in the
powertrain control components which affect ve-
hicle emissions, or a malfunction in the computer. In
addition to an illumination of the CHK ENG when a
malfunction is detected, the applicable Diagnostic
Trouble Codes (DTCs) prescribed by ISO 15031±4
are recorded in the ECM memory (See page
05±309). If the malfunction does not reoccur in 3
consecutive trips, the CHK ENG goes off automati-
cally but the DTCs remain recorded in the ECM
memory.

To check the DTCs, connect the OBD scan tool or
hand±held tester to Data Link Connector 3 (DLC3)
on the vehicle. The OBD scan tool or hand±held
tester also enables you to erase the DTCs and
check freeze frame data and various forms of en-
gine data. (For operating instructions, see the OBD
scan tool's instruction book.)
DTCs include ISO controlled codes and manufac-
turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±309).

The diagnosis system operates in the normal mode
during normal vehicle use. It also has a check (test)
mode for technicians to simulate malfunction symp-
toms and troubleshoot. Most DTCs use 2 trip detec-
tion logic* to prevent erroneous detection, and to
ensure a thorough malfunction detection. By
switching the ECM to the check (test) mode using
hand±held tester when troubleshooting, a techni-
cian can cause the CHK ENG to illuminate for a mal-
function that is only detected once or momentarily
(Hand±held tester only) (See step 3).

A76859
Hand±Held Tester
DLC3
05±296
±
DIAGNOSTICS SFI SYSTEM(1AZ±FSE)
AVENSIS REPAIR MANUAL (RM1018E)

The vehicle's on±board computer illuminates the
check engine warning light (CHK ENG) on the
instrument panel when the computer detects a mal-
function in the computer itself or in drive system
components. In addition to an illumination of the
CHK ENG when a malfunction is detected, the ap-
plicable Diagnostic Trouble Codes (DTCs) are re-
corded in the ECM memory (See page 05±309). If
the malfunction does not recur, the CHK ENG lamp
will be disappeared by turning off the ignition switch
but the recorded DTC will be remaining in the ECM
memory.

To check the DTCs, connect the hand±held tester
to the Data Link Connector 3 (DLC3) on the vehicle.
The hand±held tester also enables you to erase the
DTCs and check the freeze frame data and various
forms of engine data. (for operating instructions,
see the instruction book.)

The diagnosis system operates in the normal mode
during normal vehicle use. It also has a check (test)
mode for technicians to simulate malfunction symp-
toms and troubleshoot. Most DTCs use 2 trip detec-
tion logic* to prevent erroneous detection, and to
ensure a thorough malfunction detection. By
switching the ECM to the check (test) mode using
hand±held tester when troubleshooting, a techni-
cian can cause the CHK ENG to illuminate for a mal-
function that is only detected once or momentarily
(Hand±held tester only) (See step 3).

* 2 trip detection logic
When a logic malfunction is first detected, the mal-
function is temporally stored in the ECM memory
(1st trip). If the same malfunction is detected again
during the second drive test, this second detection
causes the CHK ENG to illuminate (2nd trip) (How-
ever, the ignition switch must be turned OFF be-
tween the 1st trip and 2nd trip).

Freeze frame data:
Freeze frame data records the engine conditions
(fuel system, calculator load, water temperature,
fuel trim, engine speed, vehicle speed, etc.) when
a malfunction is detected. When troubleshooting, it
is useful for determining whether the vehicle was
running or stopped, the engine was warmed up or
not, the air±fuel ratio was lean or rich, etc. at the
time of the malfunction.

05CPB±01
FI2547
A76859
Hand±held
Tester
DLC3
05±528
±
DIAGNOSTICS ECD SYSTEM(1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description for Euro±OBD

When troubleshooting Euro±OBD vehicles, the
only difference from the usual troubleshooting pro-
cedure is that you connect an OBD scan tool com-
plying with ISO 15031±4 or a hand±held tester to
the vehicle, and read the various data output from
the vehicle's ECM.

Euro±OBD regulations require that the vehicle's
on±board computer illuminates the check engine
warning light (CHK ENG) on the instrument panel
when the computer detects a malfunction in the
emission control system / components or in the
power train control components which affect vehicle
emissions, or a malfunction in the computer. In addi-
tion to an illumination of the CHK ENG when a mal-
function is detected, the applicable Diagnostic
Trouble Codes (DTCs) prescribed by ISO 15031±4
are recorded in the ECM memory (See page
05±544). If the malfunction does not reoccur in 3
consecutive trips, the CHK ENG goes off automati-
cally but the DTCs remain recorded in the ECM
memory.

To check the DTCs, connect the OBD scan tool or
hand±held tester to Data Link Connector 3 (DLC3)
on the vehicle. The OBD scan tool or hand±held
tester also enables you to erase the DTCs and
check the freeze frame data and various forms of
engine data. (For operating instructions, see the
OBD scan tool's instruction book.)

DTCs include ISO controlled codes and manufac-
turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±544).

The diagnosis system operates in the normal mode
during normal vehicle use. It also has a check (test)
mode for technicians to simulate malfunction symp-
toms and troubleshoot. Most DTCs use 2 trip detec-
tion logic* to prevent erroneous detection, and to
ensure a thorough malfunction detection. By
switching the ECM to the check mode using hand±
held tester when troubleshooting, a technician can
cause the CHK ENG to illuminate for a malfunction
that is only detected once or momentarily (Hand±
held tester only) (See step 3).

A81510
Malfunction Detection
Actual Intake Shutter
Valve Opening Angle
ON
OFF Normal Abnormal
Fully Opened
Switch StatusOPEN CLOSE
Intake Shutter
Valve Control Motor
Step Counter
TimeAbnormal
Normal
OPEN CLOSE ECM Commanding Fully Open
05±634
± DIAGNOSTICSECD SYSTEM (1CD±FTV)
AVENSIS REPAIR MANUAL (RM1018E)
MONITOR DESCRIPTION
This DTC will be set if the actual opening angle of the intake shutter valve varies from the target opening
angle. The ECM forces the valve to fully open within 2 to 3 seconds as the ignition switch is turned ON, and
then checks if the intake shutter valve fully opened switch is turned on. In addition, the ECM also forces the
valve to fully open when accelerating the engine (high engine load) and checks if the switch is turned ON.
When starting and/or accelerating the engine, the ECM sets this DTC if the switch is not turned on.
If the DTC is present, the ECM enters fail±safe mode and limits the engine power. The fail±safe mode will
continue until the ignition switch is turned OFF.
MONITOR STRATEGY
Required sensorsIntake shutter valve fully opened switch
Frequency of operationContinuous
Duration3 sec.
CHK ENG operation1 driving cycle
TYPICAL ENABLING CONDITIONS
Specification
Start the engine and let it idle for 30 seconds and accelerate the vehicle speed to 60 km/h (37 mph) with the accelerator pedal opened more than
the half angle

05C8R±02
±
DIAGNOSTICS ELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT](U241E(1AZ±FE))05±863
AVENSIS REPAIR MANUAL (RM1018E)
PRE±CHECK
1.DIAGNOSIS SYSTEM
(a)Description for Euro±OBD
(1)When troubleshooting Euro±OBD vehicles, theonly difference from the usual troubleshooting pro-
cedure is that you connect the vehicle to the OBD
scan tool complying with ISO 15031±4 or hand±
held tester, and read off various data output from
the vehicle's ECM.
(2)Euro±OBD regulations require that the vehicle's on±board computer illuminates the Check Engine
Warning Light (Malfunction Indicator Lamp)/CHK
ENG (MIL) on the instrument panel when the com-
puter detects a malfunction in the emission control
system/components or in the driving system com-
ponents which affect vehicle emissions, or a mal-
function in the computer. In addition to CHK ENG
(MIL) illuminating when a malfunction is detected,
the applicable Diagnostic Trouble Codes (DTCs)
prescribed by ISO15031±6 are recorded in the
ECM memory.
If the malfunction does not occur in 3±trip, the CHK ENG (MIL)
goes off but the DTCs remain recorded in the ECM memory. (3)To check the DTCs, connect the OBD scan tool orhand±held tester to the Data Link Connector 3
(DLC3) on the vehicle. The OBD scan tool or hand±
held tester also enables you to erase the DTCs and
check freezed frame data and various forms of en-
gine data (For operating instructions, see the OBD
scan tool's instruction book.).
(4)DTCs include ISO controlled codes and manufac- turer controlled codes. ISO controlled codes must
be set as prescribed by the ISO, while manufacturer
controlled codes can be set freely by the manufac-
turer within the prescribed limits (See DTC chart on
page 05±876).
(5) The diagnosis system operates in normal mode during normal vehicle use. It also has a check mode
for technicians to simulate malfunction symptoms
and troubleshoot. Most DTCs use 2 trip detection
logic (*) to prevent erroneous detection, and ensure
thorough malfunction detection. By switching the
ECM to check mode when troubleshooting, techni-
cians can cause the CHK ENG (MIL) to light up for
a malfunction that is only detected once or momen-
tarily (Hand±held tester only) (See step 2).

05±864± DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E(1AZ±FE))
AVENSIS REPAIR MANUAL (RM1018E)
(6) *2 trip detection logic:
When a malfunction is first detected, the malfunc-
tion code is temporarily stored in the ECM memory
(1st trip). If the same malfunction is detected again
during the second drive test, this second detection
causes the CHK ENG (MIL) to illumenate (2nd trip)
(However, the ignition switch must be turned OFF
between the 1st trip and the 2nd trip.).
(b) Description M±OBD
(1) When troubleshooting Multiplex (M±OBD) vehicles,
the only difference from the usual troubleshooting
procedure is that you connect the hand±held tester
to the vehicle, and read off various data output from
the vehicle's ECM.
(2) The vehicle's on±board computer illuminates the
MIL on the instrument panel when the computer de-
tects a malfunction in the computer itself or in driv-
ing system components. In addition to the MIL illu-
minating when a malfunction is detected, the
applicable DTCs are recorded in the ECM memory.
If the malfunction does not occur in 3±trip, the CHK ENG (MIL)
goes off but the DTCs remain recorded in the ECM memory.
(3) To check the DTCs, connect the hand±held tester
to DLC3 on the vehicle or read the number of blinks
of the MIL when TC and CG terminals on the DLC3
are connected. The hand±held tester also enables
you to erase the DTCs and activate the several ac-
tuators and check freeze frame data and various
forms of engine data (For instruction book).
(4) The diagnosis system operates in normal mode
during normal vehicle use, and also has a check
(test) mode for technicians to simulate malfunction
symptoms and perform troubleshooting. Most
DTCs use 2±trip detection logic (*) to prevent erro-
neous detection and ensure thorough malfunction
detection. By switching the ECM to check (test)
mode using the hand±held tester when trouble-
shooting, the technician can cause the MIL to illumi-
nate for a malfunction that is only detected once or
momentarily.
*2±trip detection logic:
When a logic malfunction is first detected, the mal-
function is temporarily stored in the ECM memory.
If the same malfunction is detected again during the
2nd test drive, this 2nd detection causes the MIL to
illuminate.