2005 TOYOTA AVENSIS warning

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)

B68159
17
DB
DCTY
KSW R B J/C
Combination Meter Assy
IC119
I14 11 DA Y
I14 22
P±B 12 1
W±B*
3
A1310
29*6
Buzzer
Meter ECU
20*
7
U1
Unlock Warning
Switch AssyIntegration Relay
B D9*
4
D10*5
Door Courtesy Lamp Switch
(Driver Side)
W±B
IC1
P
*
1: 1AZ±FSE
*2: 1AZ±FE, 1ZZ±FE, 3ZZ±FE
*
3: 1CD±FTV
*
4: LHD
*5: RHD
*
6: Except Automatic A/C
*7: Automatic A/CMPX2 Instrument Panel J/B
13
J10 J10CE CA1
5
R RIC2 IM1914
8 W±B*
5CF CA13
6
MPX1 P±B
C1014 1
A15
MPX±
MPX+
A13
A159*
6
10*7
P
P±B A/C Control
Assembly
E10 E9 E9212929
E10 E9 E9 202318ECM
*
1*1*2*3*2*3
*5*4
R*5
R*4
Center J/B
Center J/B
C10 13
PR
IPIL W±B*
4A
AJ16
IO W±B*
1,
2
R*5
W±B*5
05±1594
± DIAGNOSTICSKEY REMINDER WARNING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
KEY REMINDER BUZZER DOES NOT SOUND
CIRCUIT DESCRIPTION
When the ignition switch is OFF, the key is in the ignition key cylinder and the driver side door is open the
integration relay activates the combination meter to cause the buzzer to sound.
WIRING DIAGRAM
05C5J±01

B58556
Free
Pushed
Switch Body
± DIAGNOSTICSKEY REMINDER WARNING SYSTEM
05±1595
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSY (DRIVER SIDE)
(a) When using hand±held tester, proceed to A.
(b) When not using hand±held tester, proceed to B.
B Go to step 3
A
2 READ VALUE OF HAND±HELD TESTER (COURTESY LAMP SWITCH)
(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 D DOR CTY SW in the DATA LIST and read its value displayed on the hand±held tester.
Standard:
ON: Driver side door is open
OFF: Driver side door is closed
OK Go to step 6
NG Go to step 4
3 CHECK FRONT DOOR COURTESY LAMP SWITCH ASSY
(a) Put the dome lamp No. 2 switch in the door position and open the driver side door. Then check that
the courtesy lamp comes on.
OK Go to step 7
NG
4 INSPECT FRONT DOOR COURTESY LAMP SWITCH ASSY (DRIVER SIDE)
(a) Remove the courtesy lamp switch.
(b) Check the switch resistance.
Standard:
Twster ConnectionSwicthSpecified Condition
1 Swicth BodySwitch Free10 kor higher1 ± Swicth BodySwitch PushedBelow 1 
NG REPLACE FRONT DOOR COURTESY LAMP
SWITCH ASSY
OK

B68145
D9*1
D10*2
Front Door Courtesy Lamp Switch Assy DB
Instrument Panel J/B AssyWire Harness Side
05±1596
± DIAGNOSTICSKEY REMINDER WARNING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
5 CHECK WIRE HARNESS (INSTRUMENT PANEL J/B ASSY
(INTEGRATION RELAY) ± FRONT DOOR COURTESY LAMP SWITCH ASSY)
(a) Disconnect the DB J/B connector.
(b) Disconnect the D9 or D10 switch connector.
(c) Check the resistance of the wire harness side connectors.
Standard
Tester ConnectionSpecified Condition
*1
DB±13 (DCTY) ± D9±1
*2
DB±13 (DCTY) ± D10±1Below 1 
DB±13 (DCTY) ± Body ground10 kor higher
HINT:
*
1: RHD
*
2: LHD
OK REPLACE INSTRUMENT PANEL JUNCTION
BLOCK ASSY
NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
6 READ VALUE OF HAND±HELD TESTER (UNLOCK WARNING SWITCH ASSY)
(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 UNLK WRN SW in the DATA LIST and read its value displayed on the hand±held
tester.
Standard:
ON: The key is in the ignition key cylinder
OFF: No key is in the ignition key cylinder
OK Go to step 9
NG

B68147
Pushed Free
B68146
DA
Instrument Panel J/B Assy Wire Harness Side
U1
Unlock Warning Switch Assy
± DIAGNOSTICSKEY REMINDER WARNING SYSTEM
05±1597
AVENSIS REPAIR MANUAL (RM1018E)
7 INSPECT UNLOCK WARNING SWITCH ASSY
(a) Remove the unlock warning switch.
(b) Check the switch resistance.
Standard:
Tester ConnectionSwitch PositionSpecified Condition
12Free10 kor higher1± 2PushedBelow 1 
NG REPLACE UNLOCK WARNING SWITCH ASSY
OK
8 CHECK WIRE HARNESS (INSTRUMENT PANEL J/B ASSY
(INTEGRATION RELAY) ± UNLOCK WARNING SWITCH ASSY)
(UNLOCK WARNING SWITCH ASSY ± BODY GROUND)
(a) Disconnect the DA J/B connector.
(b) Disconnect the U1 switch connector.
(c) Check the resistance of the wire harness side connectors.
Standard:
Tester ConnectionSpecified Condition
DA±8 (KSW) ± U1±2Below 1U1±1 ± Body groundBelow 1 
DA±8 (KSW) ± Body ground10 k or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK

05±1598
±
DIAGNOSTICS KEY REMINDER WARNING SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
9 CHECK BUZZER (COMBINATION METER)
(a)Check if the seat belt warning buzzer sounds when the vehicle speed is 15 km/\
h (9 mph) or more (See page 05±1509).
HINT:
When the seat belt warning buzzer sounds, the instrument panel J/B is ab\
normal.
NG REPLACE COMBINATION METER ASSY
OK
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSY

05AF2±02
±
DIAGNOSTICS KEY REMINDER WARNING SYSTEM
05±1593
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
SymptomSuspected AreaSee Page
Key reminder buzzer does not sound
1. Unlock warning switch assy
2. Front door courtesy lamp switch (Driver side)
3. Instrument panel junction block assy (Integration relay)
4. Combination meter
5. Wire harness05±1594
05±1594
05±1591
±
±

05AF1±02
B68141
Vehicle Rear Side
Vehicle Front Side
Integration Relay
DN
DA
DN
DB
DA
DB
± DIAGNOSTICSKEY REMINDER WARNING SYSTEM
05±1591
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
1. INSPECT INSTRUMENT PANEL J/B ASSY (INTEGRATION RELAY)