key TOYOTA AVENSIS 2005 Service Repair Manual

02±2
± PREPARATIONDIAGNOSTICS
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)

± 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

010B6±13
±
INTRODUCTION HOW 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.

0549J±12
± DIAGNOSTICSAUDIO SYSTEM
05±1405
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
TermsMeaning
Physical addressThree±digit code (shown in hexadecimal) which is given to each component com-
prising the AVC±LAN.
Corresponding to the function, individual symbols are specified.
Logical addressTwo±digit code (shown in hexadecimal) which is given to each function comprising
the inner system of the AVC±LAN.
1. RADIO RECEIVER ASSY (Physical address: 190)
HINT:

*1: Even if no failure is detected, trouble code may be stored depending on the battery condition or
voltage for starting the engine.

*2: It is stored when 180 seconds have passed after the power supply connector is pulled out after the
engine starts.

*3: It may be stored when the engine key is turned 1 minuite after the engine starts.

*4: It may be stored when the engine key is turned again after the engine starts.

*5: When 210 seconds have passed after pulling out the power supply connector of the master compo-
nent with the ignition switch in ACC or ON, this code is stored.
(a) Logical address: 01 (Communication control)
DTCDiagnosis itemDescriptionAction to be taken
22RAM ErrorAbnormal condition of RAM is detected.Replace radio receiver assy.
D6
*1Absence of MasterComponent in which this code is recorded
was disconnected from system or master
component with ignition in ACC or ON.
Check harness for power supply system of
radio receiver assy.

Check harness for communication system
of radio receiver assy.
D7
*5Connection check ErrorComponent in which this code is recorded
was disconnected from system or master
component ignition with in ACC or ON.
Check harness for power supply of radio
receiver assy.

Check harness for communication system
of radio receiver assy.
D8
*2No Response to Connection CheckComponent shown by sub code is or was
disconnected from system after engine
start.
Check harness for power supply system of
component shown by sub code.

Check harness for communication system
of component shown by sub code.
D9
*1Last Mode ErrorAudio or visual component operated before
engine stop is or was disconnected with
ignition switch in ACC or ON.
Check harness for power supply system of
component shown by sub code.

Check harness for communication system
of component shown by sub code.
DANo Response to ON/OFF InstructionNo response is identified when changing
mode (audio and visual mode change).
Sound and picture does not change by but-
ton operation.
Check harness for power supply system of
component shown by sub code.

Check harness for communication system
of component shown by sub code.

If error occurs again, replace component
shown by sub code.
DB
*1Mode Status ErrorDual alarm is detected.
Check harness for power supply of compo-
nent shown by sub code.

Check harness for communication system
of component shown by sub code.
DC
*3Transmission ErrorTransmission to component shown by auxil-
iary code failed.
(Detecting this DTC does not necessarily
mean actual failure.)If same sub code is recorded in other com-
ponent, check harness for power supply and
communication system of all components
shown by code.
(If not, delete DTC and recheck.)

± DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
05±1537
AVENSIS REPAIR MANUAL (RM1018E)
3. DATA LIST
HINT:
According to the DATA LIST displayed by the hand±held tester, you can read the value of the switch, sensor,
actuator, etc. without parts removal. Reading the DATA LIST as the first step of troubleshooting is one way
to shorten the labor time.
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON.
(c) Read the DATA LIST according to the display on the tester.
Standard (Integration relay):
ItemMeasurement Item/Display
(Range)Normal ConditionDiagnostic
Note
KEY UNLK WRN SWUnlock warning switch signal
/ON or OFFON: Key is in ignition key cylinder
OFF: No key is in ignition key cylinder±
D DOR CTY SW
Driver side door courtesy switch
signal
/ON or OFFON: Driver side door is open
OFF: Driver side door is closed±
P DOR CYT SW
Passenger side door courtesy
switch signal
/ON or OFFON: Passenger side door is open
OFF: Passenger side door is closed±
Rr DOR CTY SWRear door courtesy switch signal
/ON or OFFON: Either right or left rear door is open
OFF: Both right and left rear doors are closed±
P LOCK POS SW
Passenger side door lock position
switch signal
/ON or OFFON: Passenger side door lock is in unlock position
OFF: Passenger side door lock is in lock position±
Rr LOCK POS SW
Rear door lock position switch sig-
nal
/ON or OFFON: Rear door lock is in unlock position
OFF: Rear door lock is in lock position±
IG SWIG switch signal
/ON or OFFON: Key is in ON or START position
OFF: Key is in OFF or ACC position±
D LOCK POS SW
Driver side door lock position
switch signal
/ON or OFFON: Driver side door lock is in unlock position
OFF: Driver side door lock is in lock position±
D/L SW±LOCK
Manual door lock switch LOCK
signal
/ON or OFFON: Manual door lock switch is in lock position
OFF: Manual door lock switch is in original position
(Common to driver side and passenger side model)
±
D/L SW±UNLOCK
Manual door lock switch UNLOCK
signal
/ON or OFFON: Manual door lock switch is in unlock position
OFF: Manual door lock switch is in original position
(Common to driver side and passenger side model)
±
DOR KEY SW±LOCK
Key operation door lock switch sig-
nal
/ON or OFFON: Key operation door lock switch is in lock position
OFF: Key operation door lock switch is in original position
(Common to driver side and passenger side model)
±
P DOR KEY SW±UL
Key operation passenger door un-
lock switch signal
/ON or OFFON: Passenger key operation door lock switch is in unlock position
OFF: Passenger key operation door lock switch is in neutral position±
D DOR KEY SW±UL
Key operation driver door unlock
switch signal
/ON or OFFON: Driver key operation door lock switch is in unlock position
OFF: Driver key operation door lock switch is in original position±
ALL UNLK/OPN±CL
Driver side door courtesy switch
signal
/ON or OFFON: All doors unlock when driver side door is opened
OFF: Other doors do not unlock when driver side door is opened±
OPEN DOOR WARNDoor courtesy switch signal
/ON or OFFON: Either door is open
OFF: All doors are closed±
AUTO LOCK DELAYDoor courtesy switch signal
/60s or 30s60s: Door auto locking time is 60 sec.
30s: Door auto locking time is 30 sec.±

05C85±01
POWER DOOR LOCK CONTROL SYSTEM Check Sheet
Inspector 's name:
Customer 's Name
Date Vehicle
Brought inOdometer Reading / /
Weather Conditions
When Problem
Occurred Frequency Problem OccursWeather
Outdoor temperature
/ /
 Constant  Sometimes ( Times per day, month)
 Once only
Malfunction in Door Lock/Unlock
Operation Using Door Lock Con-
trol SwitchDriver side door lock control
switch
 Others
Date Problem First Occurred
 Fine  Cloudy  Rainy  Snowy
 Various/Others
 Hot  Warm  Cool
 Cold (Approx.
C (
F))
Problem Symptoms
 Driver side door
 Passenger side door
 Rear left door
 Rear right door
 Luggage door
 Back door
Malfunction in Door Lock/Unlock
Operation Using KeyDriver side door key lock and
unlock control switch Driver side door
 Passenger side door
 Rear left door
 Rear right door
 Luggage door
 Back door
 Malfunction in Key Lock±in Prevention Function  

km
miles
 w/ Double Lock:
Malfunction in Double Locking Function System
VIN
Production Date
Licence No.
± DIAGNOSTICSPOWER DOOR LOCK CONTROL SYSTEM
05±1535
AVENSIS REPAIR MANUAL (RM1018E)
CUSTOMER PROBLEM ANALYSIS CHECK

05±1532
±
DIAGNOSTIC SCOMBIN ATION METER
A VENSIS RE PAIR MANUAL (RM1018E)
INSPECTIO N PROCEDURE
1 CHEC K BUZZER
Buzze r does not sound.A
Only seat belt buzzer does not sound.B
HIN T:
Perform the buzzer OFF mode check, when only the seat belt buzzer does n\
ot sound. If the seat belt buzzer
still does not sound even after the check, proceed to step 2.
BSYSTEM CHECK MODE( SEE PAGE 05±1499 )
A
2 READ V ALUE OF HAND±HELD TESTER
(a ) Operate the hand±held tester according to the display and select the \
ºD ATA LISTº.
Key reminder buzzer:
ItemMeasuremen t Item/
Range (Display)Normal ConditionDiagnostic Note
KEY UNLOCK WRN SWKey unlock warning switch OFF / ONKey unlock warning switch ON±
D DOOR CTY SWD door courtesy switch OFF / OND door courtesy switch ON±
IG SWIgnition switch OFF / ONIgnition switch OFF±
Light reminder buzzer:
ItemMeasurement Item/
Range (Display)Normal ConditionDiagnostic Note
KEY UNLOCK WRN SWKey unlock warning switch OFF / ONKey unlock warning switch ON±
D DOOR CTY SWD door courtesy switch OFF / OND door courtesy switch ON±
IG SWIgnition switch OFF / ONIgnition switch OFF±
Seat belt buzzer:
ItemMeasuremen t Item/
Range (Display)Normal ConditionDiagnostic Note
D SE AT BUCKL SWDriver seat buckle switch is OFF /
ONDriver seat buckle switch is OFFposition±
P SEAT BUCKL SWPassenger seat buckle switch is
OFF / ONPassenger seat buckle switch isOFF position±
IG SWIgnition switch OFF / ONIgnition switch OFF±
VEHICLE SPDVehicle speed / Min.: 0 km/h,
Max.: 255 km/hVehicle speed
15 km/hAlmost same at the meter speed
(When driving)
HINT:
Whe n the vehicle speed is not displayed on the hand±held teste r, refer to ºMalfunction in speedometerº ( See
Page 05±1510 ).
Result:
NG (Seat belt buzzer does not operate)A
NG (Key reminder / Light reminder buzzer does not operate)B
OKC

±
DIAGNOSTICS COMBINATION METER
05±1533
AVENSIS REPAIR MANUAL (RM1018E)
BGo to step 5
CCHECK AND REPLACE COMBINATION METER
ASSY
A
3INSPECT FRONT SEAT INNER BELT ASSY(D±SEAT)(SEE PAGE 05±1594)
NGCHECK AND REPLACE FRONT SEAT INNER BELT ASSY
OK
4INSPECT FRONT SEAT INNER BELT ASSY(P±SEAT)(SEE PAGE 05±1594)
NGCHECK AND REPLACE FRONT SEAT INNER BELT ASSY
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR
5INSPECT IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH(SEE PAGE 05±1594)
NGCHECK AND REPLACE IGNITION SWITCH AND
KEY UNLOCK WARNING SWITCH
OK
6INSPECT DOOR COURTESY LAMP SWITCH ASSY(SEE PAGE 05±1594)
NG CHECK AND REPLACE DOOR COURTESY LAMP SWITCH ASSY
OK
REPAIR OR REPLACE HARNESS OR CONNECTOR

B52341
Room LampOFF a: 0.25 sec.
b: 0.5 sec.
ON
ab
05±1578
±
DIAGNOSTICS WIRELESS DOOR LOCK CONTROL SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
5 SWITCH TO SELF±DIAGNOSTIC MODE
(a) Switch to the self±diagnostic mode by operating the ignition key cylinder. (1)Put the vehicle under the vehicle's initial condition (See page 73±15), insert the key into the igni-
tion key cylinder and remove it.
(2) Within 5 seconds after the key is removed (step 1), insert the key int\
o the ignition key cylinder (ignition key OFF) and perform the following once: Turn the ignition switch to ON and return it
to OFF.
(3) Within 30 seconds after the ignition switch is returned to OFF (step 2)\
, perform the following 9
times: Turn the ignition switch to ON and return it to OFF.
NOTICE:
If operation has failed, the system will return to normal mode.
HINT:

Turning the ignition switch ON after step 3 has been completed will end t\
he self±diagnostic mode.

Do not lock or unlock doors during the self±diagnostic mode.
(b) Check that the system has switched to self±diagnosticmode by the blinking frequency of the room lamp.
NG Go to step 10
OK

B51903
PushedFree
B66769
DA
Instrument Panel J/B AssyU1
Unlock Warning Switch Wire Harness Side
KSW
± DIAGNOSTICSWIRELESS DOOR LOCK CONTROL SYSTEM
05±1581
AVENSIS REPAIR MANUAL (RM1018E)
11 INSPECT UNLOCK WARNING SWITCH ASSY
(a) Check the resistance of the switch.
Standard:
Tester ConnectionSwitch PositionSpecified Condition
12
Switch free
(Key removed)10 k
or higher
1 ± 2Switch pushed
(Key set)Below 1

NG REPLACE UNLOCK WARNING SWITCH ASSY
OK
12 CHECK WIRE HARNESS (UNLOCK WARNING SWITCH ± INSTRUMENT PANEL
J/B ASSY (INTEGRATION RELAY) AND BODY GROUND)
(a) Disconnect the U1 warning switch connector.
(b) Disconnect the DA J/B connector.
(c) Check the resistance of the wire harness side connectors.
Standard:
Tester ConnectionSpecified Condition
U1±2 ± DA±8 (KSW)Below 1
U1±1 ± Body groundBelow 1

NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK