key TOYOTA AVALON 2001 Service Service Manual

DI6LH-01
I11666
Engine Room Junction Block

Headlight Control Relay
Light Control Switch
Luggage Compartment Door
Opener Switch
DLC3
Ignition Switch

Key Unlock Warning Switch
Instrument Panel Junction Block

Body ECU

DOME Fuse
- DIAGNOSTICSBODY CONTROL SYSTEM
DI-617
773 Author
: Date
:
2001 AVALON (RM808U)
PARTS LOCATION

DI6LJ-01
DI-622
- DIAGNOSTICSBODY CONTROL SYSTEM
778 Author
: Date
:
2001 AVALON (RM808U)
PROBLEM SYMPTOMS TABLE
IGNITION SWITCH AND KEY UNLOCK WARNING SWITCH:
SymptomSuspect AreaSee page
Ignition switch is not set to each position.1. Ignition switch
2. Power source circuitBE-16
DI-627
Key unlock warning system does not operate.
(The buzzer does not sound when the driver's door is opened with
the ignition OFF and key inserted)
1. Power source circuit
2. Key unlock warning switch circuit
3. Door courtesy switch circuit
4. Driver door ECU
5. Multiplex communication circuit
6. Body ECU
7. Wire harnessDI-627
DI-637
DI-639
DI-676
DI-718
IN-30
IN-30
Key unlock warning system does not operate.
(The buzzer sounds when the ignition key is ACC or ON)1. Ignition switch
2. Power source circuit
3. Wire harnessBE-16
DI-627
IN-30
HEADLIGHT AND TAILLIGHT SYSTEM (USA):
SymptomSuspect AreaSee page
Only one side headlight does not light.
1. HEAD-(LH, RH) fuse
2. Headlight bulb
3. Wire harnessBE-9
-
IN-30
Headlight does not light.
1. HEAD-(LH, RH) fuse
2. Headlight control relay circuit
3. Light control switch circuit
4. Headlight bulb
5. Wire harnessBE-9
DI-635
DI-631
-
IN-30
ºLo-Beamº does not light.
1. Headlight bulb
2. Headlight dimmer switch
3. Light control switch circuit
4. Wire harness-
DI-631
DI-631
IN-30
ºHi-Beamº does not light.
1. Headlight bulb
2. Headlight dimmer switch
3. Light control switch circuit
4. Wire harness-
DI-631
DI-631
IN-30
ºFlashº does not light.1. Headlight dimmer switch
2. Wire harnessDI-631
IN-30
Only one side taillight does not light.1. Taillight bulb
2. Wire harness-
IN-30
Taillight does not light.
1. TAIL fuse
2. Taillight control relay circuit
3. Light control switch circuit
4. Body ECU
5. Wire harnessBE-9
DI-633
DI-631
IN-30
IN-30
Rear Combination light does not light.
1. Bulb
2. Light failure sensor
3. Wire harness-
BE-53
IN-30

- DIAGNOSTICSBODY CONTROL SYSTEM
DI-625
781 Author
: Date
:
2001 AVALON (RM808U)
POWER WINDOW CONTROL SYSTEM:
SymptomSuspect AreaSee page
All power window system does not operate.
1. Power main relay
2. Driver door control system
3. Passenger door control systemBE-73
DI-676
DI-677
Driver door window system dose not operate.
1. Driver door control ECU
2. Door lock motor circuit (Driver)
3. Body ECU
4. Wire harnessDI-692
DI-692
DI-641
-
Passenger door window system dose not operate.
1. Passenger door control ECU
2. Door lock motor circuit (Passenger)
3. Body ECU
4. Wire harnessDI-714
DI-714
DI-641
-
Rear power window control system does not operate.
(Both left and right)1. Body ECU
2. Wire harnessIN-30
IN-30
Rear power window control system does not operate.
(Only one side)1. Rear power window switch circuit
2. Body ECU
3. Wire harnessDI-645
IN-30
IN-30
POWER DOOR LOCK CONTROL SYSTEM:
SymptomSuspect AreaSee page
ºDoor lock systemº does not operate at all.
1. GAUGE Fuse
2. DOOR Fuse
3. Driver door control ECU
4. Body ECU
5. Wire Harness-
-
DI-676
IN-30
-
Door lock system does not operate by manual switch.
1. Driver door control ECU
2. Body ECU
3. Wire HarnessDI-676
IN-30
-
Door lock system does not operate by door key.
1. Door Key Lock and Unlock Switch circuit
2. Body ECU
3. Wire Harness
4. Door Lock Link DisconnectedDI-637
IN-30
-
-
Fault in 2-Operation unlock function of Driver's side door key lock
and unlock switch.1. Door Key Lock and Unlock Switch circuit
2. Body ECU
3. Wire HarnessDI-637
IN-30
-
Only one door lock does not operate.1. Door Lock Motor circuit
2. Wire HarnessDI-641
-
Key confinement prevention function does not operate.
1. Key unlock warning switch circuit
2. Driver door control system
3. Passenger door control systemDI-637
DI-676
DI-677
Auto lock/unlock system does not operate.
1. Door lock motor circuit
2. Driver door control system
3. Passenger door control systemDI-641
DI-676
DI-677
LUGGAGE COMPARTMENT DOOR OPENER SYSTEM:
SymptomSuspect AreaSee page
Luggage compartment door opener system does not operate.
1. Luggage door switch circuit
2. Luggage door motor circuit
3. Body ECUDI-647
DI-649
IN-30

DI-626
- DIAGNOSTICSBODY CONTROL SYSTEM
782 Author
: Date
:
2001 AVALON (RM808U)
WIRELESS DOOR LOCK CONTROL SYSTEM:
SymptomSuspect AreaSee page
All functions of wireless door lock control system do not operate.
1. Wireless door lock control receiver circuit
2. Key unlock warning switch circuit
3. Body ECUDI-651
DI-637
IN-30
Lock or unlock function does not operate.
1. Door key lock and unlock switch circuit
2. Door unlock detection switch circuit
3. Body ECUDI-688
DI-710
DI-686
DI-708
IN-30
Automatic lock function operates even if any door is opened within
30 seconds after all doors are unlocked by wireless door lock
control system.1. Door courtesy switch circuit
2. Body ECUDI-639
IN-30
Wireless door lock operates, but the buzzer does not sound.
1. Wireless door lock buzzer circuit
2. Wireless door lock receiver circuit
3. Body ECUDI-653
DI-651
IN-30
Buzzer sound, but wireless door lock function does not operate.1. Wireless door lock receiver circuit
2. Body ECUDI-651
IN-30
Luggage compartment door opener wireless function.1. Luggage compartment door opener motor circuit
2. Body ECUDI-649
IN-30
POWER MIRROR CONTROL SYSTEM:
SymptomSuspect AreaSee page
Mirror does not operate.
1. CIG/RAD fuse
2. Mirror switch circuit
3. Mirror motor
4. Body ECU
5. Wire harnessBE-9
DI-515
BE-1 14
IN-30
IN-30
Mirror operates abnormally.
1. Mirror switch circuit
2. Mirror motor
3. Body ECU
4. Wire harnessDI-515
BE-1 14
IN-30
IN-30
HORN SYSTEM:
SymptomSuspect AreaSee page
Horn system does not operate.
1. HORN fuse
2. Horn circuit
3. Wire harnessBE-9
DI-672
IN-30
Horns blow all the time.1. Horn circuit
2. Wire harnessDI-672
IN-30
One horn operates but the other horn does not operate.1. Horn circuit
2. Wire harnessDI-672
IN-30
Horns operate abnormally.1. Horn circuit
2. Wire harnessDI-672
IN-30

DI-620
- DIAGNOSTICSBODY CONTROL SYSTEM
776 Author
: Date
:
2001 AVALON (RM808U) B4-7 e B5-14
GRWBWi l d l k i i ti i itB4 7 e B5 14
(PRG e GND1)G-R e W-BWireless door lock receiver communication circuit-
B4-8 e B5-14YRWBR l ft id i d DOWN tiBl 1VB4 8 e B5 14
(RLD e GND1)Y-R e W-BRear left side power window DOWN operationBelow 1 V
B4-9 e B5-14
(MPX2 e GND1)G-W e W-BMultiplex communication circuit-
B4-10 e B5-14RBWBDaytime running light system is operatingBelow 1 VB4 10 e B5 14
(DRL e GND1)R-B e W-BConstant10 - 14 V
B4-1 1 e Body ground
(GND2 e Body ground)W-BConstantBelow 1 V
B4 13B5 14Headlight control switch position is HI beam or FLASHBelow 1 VB4-13 e B5-14
(HU e GND1)B-R e W-BHeadlight control switch position is except HI beam or
FLASH10 - 14 V
B4-14 e B5-14PWBLight control switch TAIL or HEADBelow 2 VB4 14 e B5 14
(TAIL e GND1)P e W-BLight control switch OFF10 - 14 V
B14-15 e B5-14YGWBParking brake is usedBelow 1 VB14 15 e B5 14
(PKB e GND1)Y-G e W-BParking brake is not used10 - 14 V
B4-16 e B5-14RWWBWith seat belt ONBelow 1 VB4 16 e B5 14
(DBKL e GND1)R-W e W-BNo seat belt ON10 - 14 V
B4-17 e B5-14RYWBKey is insertedBelow 1 VB4 17 e B5 14
(KSW e GND1)R-Y e W-BKey is not inserted 10 - 14 V
B4-18 e B5-14LG RWBDLC3 i ti i itB4 18 e B5 14
(TC e GND1)LG-R e W-BDLC3 communication circuit-
B4-19 e B5-14LWBNormal condition2 - 3.5 VB4 19 e B5 14
(GSW e GND1)L e W-BWhen wire harness is open4 - 6 V
B4-20 e B5-14PLWBBuzzer sound10 - 14 VB4 20 e B5 14
(BZ e GND1)P-L e W-BBuzzer does not soundBelow 1 V
B4-21 e B5-14LWWBWireless door lock control system is operatedBelow 1 VB4 21 e B5 14
(RDA e GND1)L-W e W-BWireless door lock control system is not operated10 - 14 V
B4-22 e B5-14
(RLU e GND1)G-Y e W-BRear left side power window UP operationBelow 1 V
B4-23 e B5-14
(MPX1 e GND1)V e W-BMultiplex communication circuit-
B4-24 e B5-14
(B e GND1)W-G e W-BConstant10 - 14 V
B4-25 e B5-14LWBLuggage compartment door opener switch is operatedBelow 1 VB4 25 e B5 14
(TR+ e GND1)L e W-BLuggage compartment door opener switch is not operated10 - 14 V
B5-1 e B5-14
(ACTD e GND1)L-W e W-BDriver door lock is operating10 - 14 V
B5-2 e B5-15
(ACT+ e ACT-)L-R e LDoor lock is operating10 - 14 V
B5-3 e B5-14OWBDriver door closed10 - 14 VB5 3 e B5 14
(PCTY e GND1)O e W-BDriver door openedBelow 1 V
B5-4 e B5-14WRWBPassenger seat switch OFF10 - 14 VB5 4 e B5 14
(SEAT e GND1)W-R e W-BPassenger seat switch ONBelow 1 V
B5-5 e B5-14LOWBRear door lockedBelow 2 VB5 5 e B5 14
(LSW e GND1)L-O e W-BRear door unlocked10 - 14 V

DI-18
- DIAGNOSTICSENGINE
174 Author
: Date
:
P1335
(DI-123)Crankshaft Position Sensor Cir-
cuit Malfunction (During engine
running)Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Camshaft timing gear
ECM
-
P1345
(DI-1 11)VVT Sensor/Camshaft position
Sensor Circuit Malfunction (Bank
1)Open or short in VVT sensor (camshaft position Sensor) circuit
VVT sensor (camshaft position Sensor)
ECM

P1346
(DI-126)VVT Sensor/Camshaft position
Sensor Circuit Range/Perfor-
mance Problem (Bank 1)Mechanical system (Jumping teeth of timing belt, belt
stretched)
ECM

P1349
(DI-127)VVT System Malfunction (Bank
1)
Valve timing
OCV
VVT controller assembly
ECM

P1350
(DI-124)VVT Sensor/Camshaft position
Sensor Circuit Malfunction (Bank
2)
Same as DTC No. P1345
P1351
(DI-126)VVT Sensor/Camshaft position
Sensor Circuit Range/Perfor-
mance Problem (Bank 2)
Same as DTC No. P1346
P1354
(DI-127)VVT System Malfunction (Bank
2)Same as DTC No. P1349
P1520
(DI-134)Stop Light Switch Signal Mal-
functionShort in stop light switch signal circuit
Stop light switch
ECM

P1600
(DI-136)ECM BATT MalfunctionOpen in back up power source circuit
ECM
P1656
(DI-138)OCV Circuit Malfunction (Bank
1)Open or short in OCV circuit
OCVP1663
(DI-138)OCV Circuit Malfunction (Bank
2)OCV
ECM
P1780
(DI-141)Park/Neutral Position Switch
MalfunctionShort in park/neutral position switch circuit
Park/neutral position switch
ECM

B2795
(DI-605)Unmatched Key CodeImmobiliser system-
B2796
(DI-606)No Communication in Immobilis-
er SystemImmobiliser system-
B2797
(DI-609)Communication Malfunction No.1Immobiliser system-
*:


MIL lights up. -


MIL does not light up.

- DIAGNOSTICSENGINE
DI-21
177 Author
: Date
:
2001 AVALON (RM808U) EVP1 (E5-7) - E01 (E4-21)
B-R eW-BIG switch ON9 - 14
CCV (E8-10) - E01 (E4-21)G eW-BIG switch ON9 - 14
RSO (E4-26) - E01 (E4-21)G-B eW-BIG switch ON, Disconnect E11 connector from ECM9 - 14
OXS (E7-8) - E1 (E5-17)B eBRMaintain engine speed at 2,500 rpm for 3 min. after warming upPulse generation
(See page DI-71)
HTS (E7 9) E03 (E4 30)LGWBIdlingBelow 3.0HTS (E7-9) - E03 (E4- 30)LG eW-BIG switch ON9 - 14
KNKR (E4-27) - E1 (E5-17)W eBRIdliPulse generation
KNKL (E4-28) - E1 (E5-17)W eBRIdlingPulse generation
(See page DI-64)
NSW (E7 20) E1 (E5 17)BWBRIG switch ON, Other shift position in P, N9 - 14NSW (E7-20) - E1 (E5-17)B-W eBRIG switch ON, Shift position in P, N0
TACH (E7-27) - E1 (E5-17)B eBRIdlingPulse generation
TBP (E7-3) - E01 (E4-21)P-B eW-BIG switch ON, Disconnect vacuum hose from vapor pressure
sensor9 - 14
PTNK (E8 17) E2 (E5 18)PWIG switch ON2.9 - 3.7PTNK (E8-17) - E2 (E5-18)P eWIG switch ON, Apply vacuum 4.0 kPa (30 mmHg, 1.18 in.Hg)0.5 or less
SIL (E8-4) - E1 (E5-17)W eBRDuring transmissionPulse generation
STP (E8 15) E1 (E5 17)GWBRIG switch ON, Brake pedal depressed7.5 - 14STP (E8-15) - E1 (E5-17)G-W eBRIG switch ON, Brake pedal releasedBelow 1.5
AFR+ (E5-11) - E1 (E5-17)B-R eBRIG it h ON30 36AFL+ (E5-12) - E1 (E5-17)B-W eBRIG switch ON3.0 - 3.6
AFR- (E5-20) - E1 (E5-17)BR eBRIG it h ON27 33AFL- (E5-21) - E1 (E5-17)L eBRIG switch ON2.7 - 3.3
HAFR (E5-3) - E04 (E5-1)B-R eW-BIdlingBelow 3.0HAFR (E5 3) E04 (E5 1)
HAFL (E5-4) - E05 (E5-8)
BR eWB
B-R eW-BIG switch ON9 - 14
KSW (E7 23) E1 (E5 17)RYBRAt time of inserting keyBelow 1.5KSW (E7-23) - E1 (E5-17)R-Y eBRIn condition without key inserted4 - 5
CODE (E7-28) - E1 (E5-17)P-G eBRAt time of inserting keyPulse generation
IGSW (E8-2) - E1 (E5-17)B-O eBRIG switch ON9 - 14
TXCT (E7-18) - E1 (E5-17)L-Y eBRAt time of inserting keyPulse generation
IMLD (E8-22) - E1 (E5-17)V-W eBRIn condition without key insertedPulse generation
MREL (E8-8) - E1 (E5-17)L-O eBRIG switch ON9 - 14

DI1AS-20
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-605
761 Author
: Date
:
2001 AVALON (RM808U)
CIRCUIT INSPECTION
DTC B2795/99 Unmatched Key Code
This DTC is output when an unregistered key is inserted. When this DTC is output, delete DTC and insert
the key that a customer keeps to check that B2795 is output.
When a key that outputs B2795 is found, register this key. when B2795 is not output, there is a possibility
that the unregistered key has been inserted before. (ECM is normal.)
Inquire a customer the condition of using the system to find the cause of the trouble.
(Example: Another key has been inserted, etc..)
DTC No.DTC Detecting ConditionTrouble Area
B2795/99No communication
Key
INSPECTION PROCEDURE
1 Delete DTC and insert all the presently available keys to check whether the en-
gine starts or not.
HINT:
When inserting the key that does not start the engine, DTC (B 2795) is stored in memory.
RESULT:
OKAll keys starts the engine.
NGA specific key does not start the engine.
OK No problem.
HINT:
If the result is ºOKº, please confirm whether or not customers
have ever inserted the unregistered key or the immobiliser key
(with transponder chip) of other vehicle in the ignition key cylin-
der, and find out the cause of detecting DTC.
NG
Register the key that does not start the en-
gine.

I11736
Transponder Key
Amplifier
18
E7
E719
28
E7
CODERXCK TXCT
CODE RXCKTXCT
L-Y
L-O
P-G 4
3
2ECM
T6 DI-606
- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
762 Author
: Date
:
2001 AVALON (RM808U)
DTC B2796/99 No Communication in Immobiliser system
CIRCUIT DESCRIPTION
This code is stored in memory when inserting the key that does not have a transponder chip or if communica-
tion between the key and ECM is impossible.
DTC No.DTC Detecting ConditionTrouble Area
B2796/99No communication

Key

Transponder Key Coil

Transponder Key Amplifier

Wire harness

ECM
WIRING DIAGRAM
DI1AT-23

- DIAGNOSTICSENGINE IMMOBILISER SYSTEM
DI-607
763 Author
: Date
:
2001 AVALON (RM808U)
INSPECTION PROCEDURE
1 Delete DTC and insert all the presently available keys to check whether the en-
gine starts or not.
RESULT:
AAll keys start the engine.
BA specific key does not start the engine. In this case, DTC
(B 2796) is stored in memory.
CAll keys do not start the engine. In this case, DTC (B 2796)
is stored in memory.
A No problem at this time.
HINT:
If the result is ºAº, please confirm whether or not customers
have ever inserted the key (without transponder chip) of other
vehicle in the ignition key cylinder, and find out the cause of de-
tecting DTC.
B The transponder chip of a specific key is defec-
tive. Replace the key.
C
2 Check transponder key coil (See page BE-181).
NG Replace transponder key coil.
OK
3 Check harness and connector between transponder key amplifier and ECM.
NG Repair or replace harness and connector.
OK