2005 TOYOTA AVENSIS horn

I35662
EAU
AU2 ºVOICEº switch
S15
±
DIAGNOSTICS NAVIGATION SYSTEM
05±1495
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1INSPECT STEERING WHEEL ASSY(BEEP SOUND)
(a)Check the switch (Beep sound).
(1)Press steering pad switch LH to check that the beep sound is produced.
OKGo to step 3
NG
2INSPECT STEERING WHEEL ASSY(AU2, EAU)
(a)Remove the horn button assy(See page 50±9).
(b)Check continuity between the terminals at each condi- tion, as shown in the chart.
Tester connectionConditionSpecified condition
AU2 ± EAUDo not switch positionApprox. 100 k

AU2 ± EAUVOICE switch: pushApprox. 3.1 k
NGREPLACE STEERING WHEEL ASSY
(See page 50±9)
OK
3 CHECK TALK BACK
(a) Check whether the system performs talk back or not. Standard: The system performs talk back.
OK SYSTEM OK
NG

05BAA±01
05±1634
±
DIAGNOSTICS THEFT DETERRENT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
PROBLEM SYMPTOMS TABLE
Proceed to the reference page shown in the table below for each malfunction sym\
ptom and troubleshoot
each circuit.
HINT:
Troubleshooting of the theft deterrent system is based on the premise that the door loc\
k control system and
the wireless door lock control system are operating normally. Accordingly, before troubleshooting the theft
deterrent system, first make certain that the door lock control system and the wireless door lock control sys-
tem are operating normally.
SymptomSuspected AreaSee Page
Theft deterrent system cannot be set
1. Security indicator circuit
2. ECU power source circuit
3. Unlock warning switch circuit
4. Door key lock and unlock switch
5. Luggage compartment door key lock and unlock switch (Sedan)
6. Back door key lock and unlock switch (Liftback, Wagon)
7. Door courtesy switch circuit
8. Luggage compartment door courtesy switch circuit (Sedan)
9. Back door courtesy switch circuit (Liftback, Wagon)
10.Engine hood courtesy switch circuit05±1635
05±1637
05±1594 73±3
73±3
73±3
05±1631
05±1631
05±1631
05±1642
Security indicator does not blink when theft deterrent system is
set1. Security indicator circuit05±1635
Alarm sounding state is not canceled when ignition switch is
turned ON±OFF 10 times within 15 seconds1. Ignition switch circuit
2. Unlock warning switch circuit05±1639
05±1594
Theft deterrent system can be set even when any door is open
1. Door courtesy switch circuit
2. Luggage compartment door courtesy switch circuit (Sedan)
3. Back door courtesy switch circuit (Liftback, Wagon)05±1631
05±1631
05±1631
Horns (low pitched, high pitched) do not sound while theft deter-
rent system is in warning operation1. Horn (low pitched, high pitched) circuit05±1644
Hazard warning lamps do not flash while theft deterrent system is
in warning operation1. Hazard warning circuit65±5
Room lamp does not flash while theft deterrent system is in warn-
ing operation1. Room lamp circuit65±5
Theft warning siren sounds even when theft deterrent system is
not set1. Theft warning siren circuit05±1647
Hazard warning lamps flash even when theft deterrent system is
not set1. Hazard warning switch circuit65±5
Room lamp flashes even when theft deterrent system is not set1. Room lamp circuit65±5
Theft warning siren sounds even when theft deterrent system is
not set1. Theft warning siren circuit05±1647
Intrusion (theft warning) sensor does not detect any moving object
while theft deterrent system is set1. Instrution sensor circuit05±1650
Intrusion (theft warning) sensor sets off alarm while theft deterrent
system is not set or there is nothing moving inside vehicle with
theft deterrent system set
1. Intrusion sensor circuit05±1650
Intrusion (theft warning) sensor OFF switch does not operate1. Intrusion sensor circuit05±1650
Intrusion (theft warning) sensor OFF switch continues operating1. Intrusion sensor circuit05±1650

05BA9±01
B50657
T6
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
05±1631
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
1. CHECK THEFT WARNING ECU ASSY
(a) Disconnect the T6 ECU connector.
(b) Check the voltage or resistance of each terminal of the wire harness side connector.
Standard:
Symbols (Terminal No.)Wiring ColorConditionSpecified Condition
+B1 (T6±2) ± E (T6±29)W±R ± W±BConstant10 to 14 V
E (T6±29) ± Body groundW±B ± Body groundConstantBelow 1

IG (T6±10) ±
Body groundR±W ± Body groundIgnition switch OFF
ON0 V
10 to 14 V
DSWH (T6±34) ±
Body groundL±R ± Body groundEngine hood CLOSED
OPEN10 k
or higher

Below 1

If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the T6 ECU connector.
(d) Check the voltage between each terminal of the connector and the body ground.
Standard:
Symbols (Terminal No.)Wiring ColorConditionSpecified Condition
IND (T6±25) ±
Body groundV ± Body ground
Security indicator light lights up
(It lights up only for 30 sec. in alarm sounding state
It flashes when imobiliser system is operating)
3 to 6 V
HORN (T6±5) ±
Body groundG ± Body groundArmed state
Alarm sounding state0 V
10 to 14 V
CTLS (T6±27) ±
Body groundL±R ± Body groundSelf±power siren is souding
(Theft deterrent system is in alarm sounding state)5 V
S+B (T6±24) ± L W Body groundArming preparation state or armed state10 to 14 VS+B (T6 24)
Body groundL±W ± Body groundDisarmed stateBelow 1 V
IOUT (T6 26)No moving object detected by sensor10 to 14 VIOUT (T6±26) ±
Body groundL±B ± Body groundMoving object detected by sensor during arming preparation
state or armed statePulse generation
If the result is not as specified, the ECU may have a malfunction.

05BA8±01






B68543
Rear Window Defogger
Switch AssyEngine Room R/B

DCC Fuse

HORN Fuse
Fuse Block

DOME Fuse

ECU±B2 Fuse
Center J/B
Security Indicator
Engine Room J/B No. 4*1
Engine Room R/B No. 4*1

ALT H±fuse
Engine Room R/B No. 3*2

ALT H±fuse
Engine Room R/B No. 2

HORN Relay
High Pitched Horn AssyLow Pitched Horn AssyHazard Warning Light
Hazard Warning Light
Instrument Panel J/B Assy

IG1 Relay

GAUGE1 Fuse

AM1 FuseHood Lock Assy

Engine Hood Courtesy Switch
Theft Warning ECU Assy
Unlock Warning Switch
Ignition Switch Assy*
1: Gasoline
*2: 1CD±FTV
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
05±1629
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

05BA7±01
THEFT DETERRENT SYSTEM Check SheetInspector 's name:
Customer 's Name
Date VehicleVIN
Production Date
Licence No.
Odometer Reading / /km
miles
Weather Conditions
When Problem
Occurred Frequency Problem OccursWeather
Outdoor
Temperature
/ /

Constant
Sometimes ( Times per day, month)

Once only Brought in


Security indicator light does not flash when theft deterrent system is set.
(It stays ON or does not light up at all)
Theft deterrent system
does not operate.When door is opened.
Theft deterrent system
cannot be canceled once
set.

Theft deterrent system
cannot be canceled during
warning operation.When key is inserted into ignition key cylinder and ignition switch is turned
ON±OFF 10 times within 15 seconds.
Warning operation does not start when theft deterrent system is set and door is opened with key.


Date Problem First Occurred

Fine
Cloudy
Rainy
Snowy

Various/Others

Hot
Warm
Cool

Cold (Approx.
C (
F))
Problem Symptom










Malfunction

Horns only

Door lock operation only

Hazard warning light only

Room lamp only

Theft warning siren only

Intrusion sensor only


When door is unlocked using wireless door lock control system. When engine hood is
opened.
When door is unlocked using wireless door lock control system.
Others
Theft deterrent system cannot be set. 05±1628
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
CUSTOMER PROBLEM ANALYSIS CHECK

B67701
Battery MainEngine Room R/B12
1T7
Theft Warning ECU Assy
G
HORN
B±G*
1
HORN Relay
G±W20
1H11
Horn
(Low) W
H12
Horn
(High)IE1J26
J/C
B
HORN5 Engine Room R/B No. 2
B G G
32
2 2 2
5
W
1
1A 1
1 3
3
B±G*
1
B*2
B*2
4A
4B1
1
*
1: Gasoline
*2: 1CD±FTV Engine Room
R/B No. 3 Engine
Room J/B
No. 4
G±W 05±1644
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
HORN CIRCUIT
CIRCUIT DESCRIPTION
When the theft deterrent system is transferred from the armed state to the alarm sounding state, the theft
warning ECU switches on the HORN relay causing the horns to sound. The horn sounds at an interval of
0.4 seconds.
WIRING DIAGRAM
05BAF±01

B67416
B68374
21
5
3
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
05±1645
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1 INSPECT FUSE (HORN)
(a) Remove the HORN fuse from the engine room R/B.
(b) Check the resistance.
Standard: Resistance
NG REPLACE FUSE
OK
2 INSPECT HORN ASSY (LOW PITCED, HIGH PITCHED)
(a) Check operation of the horn.
Standard:
Measurement ConditionSpecified Condition
Battery positive (+)
Terminal 1
Battery negative (±)
Horn bodyHorn blows
NG REPAIR OR REPLACE HORN ASSY
OK
3 INSPECT RELAY (HORN)
(a) Remove the HORN relay from the engine room R/B No.
2.
(b) Check operation of the HORN relay.
Standard:
Tester ConnectionSpecified Condition
10 kor higher
3 ± 5Below 1 
(When battery voltage is applied to terminals 1 and 2)
NG REPLACE RELAY
OK

B63408
Wire Harness Side
T6
Theft Warning ECU Assy


B68387
Wire Harness Side
H11
H12
Horn Assy Engine Room R/B No. 2
1
05±1646
± DIAGNOSTICSTHEFT DETERRENT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
4 CHECK THEFT WARNING ECU ASSY (POWER SOURCE)
(a) Disconnect the T6 ECU connector.
(b) Check the voltage between the wire harness side con-
nector and the body ground.
Standard:
Tester ConnectionSpecified Condition
T6±5 (HORN) ± Body ground10 to 14 V
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
5 CHECK WIRE HARNESS (ENGINE ROOM R/B NO. 2 ± HORN ASSY)
(a) Remove the HORN relay from the engine room R/B No.
2.
(b) Disconnect the H11 and H12 horn connectors.
(c) Check the resistance between the wire harness side con-
nectors.
Standard:
Tester ConnectionSpecified Condition
3 ± H11±1Below 1
3 ± H12±1Below 1

NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
REPLACE THEFT WARNING ECU ASSY