code TOYOTA AVENSIS 2005 Service Repair Manual

± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
05±1603
AVENSIS REPAIR MANUAL (RM1018E)
3. CHECK DIAGNOSIS
(a) Using the hand±held tester, check for DTCs.
NOTICE:
Hand±held tester only:
When the diagnosis system is switched from normal mode to check mode, all the DTCs and freeze
frame data recorded in normal mode are erased. So before switching modes, always check the DTCs
and freeze frame data, and make a note of them.
(1) Prepare the hand±held tester.
(2) Connect the hand±held tester to the DLC3 under the instrument panel lower pad.
(3) Turn the ignition switch ON and push the hand±held tester switch ON.
(4) Use the hand±held tester to check for DTCs and freeze frame data, and make a note of them
(For operating instructions, see the hand±held tester instruction book).
(5) Confirm the details of the DTCs.
(b) Either of the following procedures will erase the DTCs and freeze frame data.
(1) Operating the hand±held tester to erase the codes (See the hand±held tester instruction book
for operating instructions).
(2) Disconnecting the battery terminals or ECU±B fuse.
4. DATA LIST
HINT:
Using the DATA LIST displayed on the hand±held tester, you can read the value of the switch, sensor, actua-
tor, etc. without parts removal. Reading the DATA LIST as the first step of troubleshooting is one way to short-
en 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.
Transponder key ECU:
ItemMeasurement Item/
Display (Range)Normal Condition
KEY SWUn±lock warning switch signal/
ON or OFFOFF: Key is in Ignition key cylinder
ON: No key is in Ignition key cylinder
IG SWIgnition switch signal/ ON or OFFOFF: Ignition switch is ON or START position
ON: Ignition switch is OFF or ON position
IMMOBILISERImmobiliser system status/
SET or UNSETUNSET: Without key
SET: Ignition switch ON
RESPONSETransponder chip data/
NG or OKNG: Data error
OK: Data OK
FRAMETransponder chip data/
NG or OKNG: Data error
OK: Data OK
SERIAL NUMBERTransponder chip data/
NG or OKNG: Data error
OK: Data OK
ENCRYPT CODETransponder chip data/
NG or OKNG: Data error
OK: Data OK
STATUSTransponder chip data/
NG or OKNG: Data error
OK: Data OK
BCCTransponder chip signal/
NG or OKNG: Incorrect data sending
OK: Correct data sending
SUB KEYSub key code signal/
NOMATCH or MATCHNOMATCH: Nomatch sub±key code is sent
MATCH: Sub key code is sent
MASTER KEYMaster key code signal/
NOMATCH or MATCHNOMATCH: Nomatch Master key code is sent
MATCH: Master key code is sent
REGIST SUB CODENumber of registered sub±key/ min. 0, max. 15Number of registered sub±key
REGIST MAS CODENumber of registered master key/ min. 0, max. 15Number of registered master key

05±1604
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)ItemNormal Condition Measurement Item/
Display (Range)
REG CODE SPACE
Memory space for key codes
registration/
NOT FUL or FULLNOT FUL: Possible to resister more key code
FULL: Impossible to register key code any more
ANTENNA COILAntenna coil condition/
NORMAL or FAILNormal: Antenna coil is normal
FAIL: Antenna coil is abnormal
5. ACTIVE TEST
HINT:
Performing the ACTIVE TEST using the hand±held tester allows you to operate the relay, VSV, actuator,
etc. without parts removal. Performing the ACTIVE TEST 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) Perform the ACTIVE TEST, according to the display on the tester.
Transponder key ECU:
ItemTest Details
SECURITY INDICTurn security indicator ON/OFF

054CG±07
Inspector 's
Name:
Customer 's Name
Date Vehicle
Brought InProduction Date VIN
Licence No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ConstantIntermittent ( times a day)
DTC Check1st Time
2nd TimeNormal code
Malfunction code (Code )
Normal codeMalfunction code (Code )
Symptomskm
miles
Engine does not start Immobiliser is not set
(Engine starts with key codes other than registered key code)
Weather Conditions
When Problem
OccurredWeather
Outdoor
TemperatureOnly onceFine
Various/Others
CloudyRainySnowy
Hot
Cold (Approx.
C (
F)
WarmCool
ENGINE IMMOBILISER SYSTEM Check Sheet
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
05±1601
AVENSIS REPAIR MANUAL (RM1018E)
CUSTOMER PROBLEM ANALYSIS CHECK

054CF±07
±
DIAGNOSTICS ENGINE IMMOBILISER SYSTEM
05±1599
AVENSIS REPAIR MANUAL (RM1018E)
ENGINE IMMOBILISER SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:

Use this procedure to troubleshoot the engine immobiliser system.

The hand±held tester should be used in step 4, 5 and 7.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
(See page 05±1601)
3 CRANK ENGINE FOR MORE THAN 10 SECONDS
4 CHECK FOR DTC
(a) Check for DTCs and note any codes that are output.
(b) Delete the DTC.
(c) Recheck for DTCs. Try to prompt the DTC (SFI system and engine immobiliser system) by sim\
ulating the original activity that the DTC suggested.
(1) If the DTC does not reoccur, proceed to A.
(2) If the DTC (SFI system) reoccurs, proceed to B.
(3) If the DTC (engine immobiliser system) reoccurs, proceed to C.
B Go to SFI or ECD SYSTEM (See page 05±290 or 05±517)
C Go to step 8
A
5 READ VALUE OF HAND±HELD TESTER (IMMOBILISER ECU (TRANSPONDER KEY ECU ASSY) (SWITCH CONDITION))
(a) Connect the hand±held tester to the DLC3.
(b) Turn the ignition switch ON and push the hand±held tester main switch \
ON.
(c) Select the item KEY SW in the DATA LIST and read its value displayed on the hand±held tester.
Transponder key ECU:
ItemMeasurement Item/
Display (Range)Normal ConditionDiagnostic Note
KEY SWUn±lock warning switch signal /ON or OFFON: Key is in ignition key cylinder
OFF: No key is in ignition key cyl- inder
±
NGGo to DTC B2780 (See page 05±1613)

05AEY±02
05±1586
±
DIAGNOSTICS KEY REMINDER WARNING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
KEY REMINDER WARNING SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:
Use this procedure to troubleshoot the key reminder warning system.
The hand±held tester should be used in step 3 and 4.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND PROBLEM SYMPTOM
3DTC CHECK (MULTIPLEX COMMUNICATION SYSTEM) (See page 05±1656)
(a) Check for DTCs and note any codes that are output.
(b) Delete the DTC.
(c) Recheck for DTCs. Try to prompt the DTC by simulating the original activity that the DTC su\
ggests. (1) If the DTC does not reoccur, proceed to A.
(2) If the DTC reoccurs, proceed to B.
B GO TO MULTIPLEX COMMUNICATION SYSTEM(See page 05±1656)
A
4PROBLEM SYMPTOMS TABLE (See page 05±1593)
(a) If the fault is not listed on the symptoms table, proceed to A.
(b) If the fault is listed on the symptoms table, proceed to B. B Go to step 5
A
5 PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM
(a)Pre±check (See page 05±1655). (1) Inspection with the hand±held tester (ECU DATA MONITOR).
(b)Terminals of ECU(See page 05±1659).
(c)On±vehicleinspection (See page 73±26).
6 ADJUST, REPAIR OR REPLACE

05BA6±01
±
DIAGNOSTICS THEFT DETERRENT SYSTEM
05±1627
AVENSIS REPAIR MANUAL (RM1018E)
THEFT DETERRENT SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
HINT:

Use this procedure to troubleshoot the theft deterrent system.

The hand±held tester should be used at step 3.
1VEHICLE BROUGHT TO WORKSHOP
2CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
(See page 05±1628)
3INSPECT COMMUNICATION FUNCTION OF LARGE±SCALE MULTIPLEX COMMU- NICATION SYSTEM (BEAN)
(a)Use the hand±held tester to check for normal function of the multiple\
x communication system.
(1)(ECU unconnected, communication line malfunctioning) Without code outp\
uts, proceed to A.
(2)(ECU unconnected, communication line malfunctioning) With code outputs\
, proceed to B.
BGo to MULTIPLEX COMMUNICATION SECTION(See page 05±1654)
A
4PROBLEM SYMPTOMS TABLE (See page 05±1634)
(a)When problem is not listed on the problem symptoms table, proceed to A.
(b)When problem is listed on the problem symptoms table, proceed to B. BGo to step 6
A
5PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM
(a)Terminals of ECU (See page 05±1631)
(b)On±vehicle inspection (See page 73±31)
6 ADJUST, REPAIR OR REPLACE
7 CONFIRMATION TEST
END

B66227
E10
ECMT8
Transponder Key ECU Assy
IMI
IMO30*
1
27*2
29*1
26*2W GR
6
7EFIO
EFII
*1: 1CD±FTV
*2: Gasoline
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
05±1625
AVENSIS REPAIR MANUAL (RM1018E)
DTC B2799 ENGINE IMMOBILISER SYSTEM
MALFUNCTION
CIRCUIT DESCRIPTION
This DTC is output when the ECM detects errors in communication between the transponder key ECU assy
and the ECM or in the communication lines.
This DTC is also output when an engine start is attempted while the ECU communication ID between the
transponder key ECU and the ECM are different.
Before troubleshooting for this DTC, make sure that there is no DTC detected in the transponder key ECU.
If there is a key code±related DTC detected in the transponder key ECU, repair it first.
DTC No.DTC Detection ConditionTrouble Area
B2799

Error in communication between ECM and transponder
key ECU, and in communication line

Communication ID is different during communication with
transponder key ECU
Wire harness

Transponder key ECU assy

Transponder key amplifier

ECM
WIRING DIAGRAM
05B0J±03

B52550
I12
Transponder Key AmplifierT8
Transponder Key ECU Assy
Y±G
CODE
411CODE
05±1624
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B2797 COMMUNICATION MALFUNCTION NO.1
CIRCUIT DESCRIPTION
This DTC is output when an error occurs in normal communication.
HINT:
Some noise is found in the communication line.
DTC No.DTC Detection ConditionTrouble Area
B2797Keys are positioned too close to each other or noise oc-
curred in communication line

Key

Wire harness

Transponder key amplifier

Transponder key ECU assy
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
(a) After replacing the transponder key amplifier, check that the engine starts.
OK NORMAL
(TRANSPONDER KEY AMPLIFIER DEFECTIVE)
NG
REPLACE TRANSPONDER KEY ECU ASSY
05B0I±03

B62676
I12
Transponder Key AmplifierT8
Transponder Key ECU Assy
VC5
CODE
TXCT
AGND Y±B
Y±G
L±R
GR±R8
11
12
13 1
4
5
7 TXCT
GND
ANT2 ANT1 VC5
CODE
CoilAmplifier
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
05±1621
AVENSIS REPAIR MANUAL (RM1018E)
DTC B2796 NO COMMUNICATION IN IMMOBILISER
SYSTEM
DTC B2798 COMMUNICATION MALFUNCTION NO.2
CIRCUIT DESCRIPTION
This code is stored in the memory when a key that does not have a transponder chip is inserted or if commu-
nication between the key and transponder key ECU is impossible.
DTC No.DTC Detection ConditionTrouble Area
B2796No communication

Key

Wire harness

Transponder key amplifier (Transponder key coil)

Transponder key ECU assy
B2798Communication error
Key
WIRING DIAGRAM
05B0H±03




 

B64974
I12
Transponder Key Amplifier Wire Harness Side
T8
Transponder Key ECU Assy
± DIAGNOSTICSENGINE IMMOBILISER SYSTEM
05±1623
AVENSIS REPAIR MANUAL (RM1018E)
4 CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSY ± TRANSPONDER KEY
AMPLIFIER) (TRANSPONDER KEY ECU ASSY OR TRANSPONDER KEY AMPLIFI-
ER ± BODY GROUND)
(a) Disconnect the T8 ECU and I12 amplifier connectors.
(b) Check the resistance of the wire harness side connectors.
Standard:
Tester ConnectionSpecified Condition
T8±8 (VC5) ± I12±1 (VC5)
T8±11 (CODE) ± I12±4 (CODE)Below 1
T8±12 (TXCT) ± I12±5 (TXCT)Below 1

T8±13 (AGND) ± I12±7 (GND)
T8±8 (VC5) or I12±1 (VC5) ±
Body ground
T8±11 (CODE) or I12±4 (CODE) ±
Body ground
10 k
or higherT8±12 (TXCT) or I12±5 (TXCT) ±
Body ground10 k
or higher
T8±13 (AGND) or I12±7 (GND) ±
Body ground
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
5 CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER
(a) After replacing the transponder key amplifier, check that the engine starts.
NG NORMAL
(TRANSPONDER KEY AMPLIFIER DEFECTIVE)
OK
REPLACE TRANSPONDER KEY ECU ASSY