horn TOYOTA AVENSIS 2005 Service User Guide








H41439
D Squib Airbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
Color: Orange
A
B
C
D
E
F
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1199
AVENSIS REPAIR MANUAL (RM1018E)
INSPECTION PROCEDURE
1CHECK CONNECTOR
(a)Turn the ignition switch to the LOCK position.
(b)Disconnect the negative (±) terminal cable from the battery, and wait for at least 90 seconds.
(c)Disconnect the connectors from the airbag sensor assy center and the hor\
n button assy.
(d)Check that the spiral cable sub±assy connectors (on the horn button \
assy side) are not damaged.
OK:
The lock button is not disengaged, or the claw of the lock is not deform\
ed or damaged.
NGREPLACE SPIRAL CABLE SUB±ASSY
OK
2CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER ± HORN BUTTON ASSY)
(a)Release the activation prevention mechanism built in the
connector ºBº (See page 05±1184).
(b) Measure the resistance between D+ and D± of the con-
nector ºEº.
OK:
Resistance: 1 M
or Higher
NG Go to step 5
OK









H40030
D SquibAirbag
Sensor
Assy
Center
DLC3
CG TC DTC B0100/13Spiral
Cable
Sub±assy
C
D
E
F








H40031
D Squib Airbag
Sensor
Assy
Center
DLC3
CG TC DTC B0100/13Spiral
Cable
Sub±assy
C
D
E
F
05±1200
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3CHECK AIR BAG SENSOR ASSY CENTER
(a)Connect the connector to the airbag sensor assy center.
(b)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(c)Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(d)Clear the stored DTCs in the memory (See page 05±1184).
(e)Turn the ignition switch to the LOCK position.
(f)Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(g)Check the DTCs (See page 05±1184).
OK:
DTC B0100/13 is not output.
HINT:
Codes other than code B0100/13 may be output at this time, but
they are not related to this check.
NGREPLACE AIR BAG SENSOR ASSY CENTER
OK
4CHECK HORN BUTTON ASSY(D SQUIB)
(a)Turn the ignition switch to the LOCK position.
(b)Disconnect the negative (±) terminal cable from the bat- tery, and wait for at least 90 seconds.
(c)Connect the connectors to the horn button assy.
(d)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(e)Turn the ignition switch to the ON position, and wait for at
least 10 seconds.
(f)Clear the stored DTCs in the memory (See page 05±1184).
(g) Turn the ignition switch to the LOCK position.
(h) Turn the ignition switch to the ON position, and wait for at least 10 seconds.
(i)Check the DTCs (See page 05±1184). OK:
DTC B0100/13 is not output.
HINT:
Codes other than code B0100/13 may be output at this time, but
they are not related to this check.
NG REPLACE HORN BUTTON ASSY
OK
USE SIMULATION METHOD TO CHECK

05C5W±01
H40533
A26A27
A28
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05±1195
AVENSIS REPAIR MANUAL (RM1018E)
TERMINALS OF ECU
Terminal No.Terminal SymbolDestination (Wire Harness Side)
A±Half Connection Detection Mechanism
B±Half Connection Detection Mechanism
A27±3LACombination Meter Assy (SRS Warning Light)
A27±4GSW1 DBEWIntegration relay
A27±5IG2IGN Fuse
A27±7P2±Instrument Panel Passenger Airbag Assy (P Squib, 2nd step)
A27±8P2+Instrument Panel Passenger Airbag Assy (P Squib, 2nd step)
A27±9SR+Airbag Front RH Sensor
A27±10P+Instrument Panel Passenger Airbag Assy (P Squib)
A27±11P±Instrument Panel Passenger Airbag Assy (P Squib)
A27±12SILDLC3
A27±13D±Horn Button Assy (D Squib)
A27±14D+Horn Button Assy (D Squib)
A27±15SL+Airbag Sensor Front LH
A27±16D2+Horn Button Assy (D Squib, 2nd step)
A27±17D2±Horn Button Assy (D Squib,2nd step)
A27±19TCDLC3
A27±20SR±Airbag Front RH Sensor
A27±23 (*1)GSW2ECM
A27±26SL±Airbag Sensor Front LH
A27±27E1Ground
A27±28E2Ground
A26±2 (*2)LBE±Front Seat Inner Belt Assy LH (Buckle Switch LH)
A26±3 (*2)LSP±Seat Position Airbag Sensor
A26±4 (*2)LSP+Seat Position Airbag Sensor
A26±7PL±Front Seat Outer Belt Assy LH (P/T Squib LH)
A26±8PL+Front Seat Outer Belt Assy LH (P/T Squib LH)
A26±9 (*3)ICL+Curtain Shield Airbag Assy LH (Curtain Shield Squib LH)
A26±10 (*3)ICL±Curtain Shield Airbag Assy LH (Curtain Shield Squib LH)
A26±11SFL±Separate Type Front Seat Back Assy (Side Squib LH)
A26±12SFL+Separate Type Front Seat Back Assy (Side Squib LH)
A26±16BBL+Side Airbag Sensor Assy LH
A26±18BBL±Side Airbag Sensor Assy LH
A26±19 (*2)LBE+Front Seat Inner Belt Assy LH (Buckle Switch LH)

050X1±21
H42508
Instrument Panel Passenger Airbag Assy
Separate Type Front Seat Back
Assy (Side Squib RH)
Side Airbag
Sensor Assy LH Airbag Sensor
Front LH
Front Seat Outer Belt Assy LHFront Seat Outer Belt Assy RH Airbag Front RH Sensor Combination Meter Assy:
Curtain Shield Airbag Assy RH (*3)
Airbag Sensor
Rear RH (*3) Seat Position
Airbag Sensor Curtain Shield
Airbag Assy LH
(*3)
Horn Button Assy
Airbag Sensor Assy Center Airbag Sensor
Rear LH (*3)Side Airbag Sensor Assy RH
Front Seat Inner Belt Assy LH (*1) Spiral Cable
Sub±assy
Separate Type
Front Seat
Back Assy
(Side Squib LH)
SRS Warning Light
Instrument
Panel
Airbag Assy
*1: LHD
*2: RHD
*3: w/ Curtain Shield Airbag 05±1194
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
LOCATION

050WZ±17
05±1190
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is displayed during the DTC check, check the circuit\
listed for the code in the table below
(Proceed to the page given for that circuit).
DTC No.
(See page)Detection ItemTrouble AreaSRS
Warning Light
B0100/13
(05±1198)

Short in D squib circuit
Horn button assy (squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B0101/14
(05±1202)

Open in D squib circuit
Horn button assy (squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B0102/11
(05±1206)

Short in D squib circuit (to ground)
Horn button assy (squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B0103/12
(05±1210)

Short in D squib circuit (to B+)
Horn button assy (squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B0105/53
(05±1214)
Short in P squib circuit
Instrument panel passenger airbag assy (squib)

Airbag sensor assy center

Instrument panel wire
ON
B0106/54
(05±1217)
Open in P squib circuit
Instrument panel passenger airbag assy (squib)

Airbag sensor assy center

Instrument panel wire
ON
B0107/51
(05±1220)
Short in P squib circuit (to ground)
Instrument panel passenger airbag assy (squib)

Airbag sensor assy center

Instrument panel wire
ON
B0108/52
(05±1223)
Short in P squib circuit (to B+)
Instrument panel passenger airbag assy (squib)

Airbag sensor assy center

Instrument panel wire
ON
B0110/43
(05±1226)
Short in side squib (RH) circuit
Separate type front seat back assy (squib, RH)

Airbag sensor assy center

Floor wire No.2
Blink
B0111/44
(05±1229)
Open in side squib (RH) circuit
Separate type front seat back assy (squib, RH)

Airbag sensor assy center

Floor wire No.2
Blink
B0112/41
(05±1232)
Short in side squib (RH) circuit
(to ground)
Separate type front seat back assy (squib, RH)

Airbag sensor assy center

Floor wire No.2
Blink
B0113/42
(05±1235)
Short in side squib (RH) circuit (to B+)
Separate type front seat back assy (squib, RH)

Airbag sensor assy center

Floor wire No.2
Blink
B0115/47
(05±1238)
Short in side squib (LH) circuit
Separate type front seat back assy (squib, LH)

Airbag sensor assy center

Floor wire
Blink
B0116/48
(05±1241)
Open in side squib (LH) circuit
Separate type front seat back assy (squib, LH)

Airbag sensor assy center

Floor wire
Blink
B0117/45
(05±1244)
Short in side squib (LH) circuit
(to ground)
Separate type front seat back assy (squib, LH)

Airbag sensor assy center

Floor wire
Blink
B0118/46
(05±1247)
Short in side squib (LH) circuit (to B+)
Separate type front seat back assy (squib, LH)

Airbag sensor assy center

Floor wire
Blink

05±1192
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E) B1160/83
(*3)
(05±1322)

Short in curtain shield squib (RH) cir-
cuit
Curtain shield airbag assy RH (squib)

Airbag sensor assy center

Floor wire No.2
Blink
B1161/84
(*3)
(05±1325)
Open in curtain shield squib (RH) cir-
cuit
Curtain shield airbag assy RH (squib)

Airbag sensor assy center

Floor wire No.2
Blink
B1162/81
(*3)
(05±1328)
Short in curtain shield squib (RH) cir-
cuit (to ground)
Curtain shield airbag assy RH (squib)

Airbag sensor assy center

Floor wire No.2
Blink
B1163/82
(*3)
(05±1331)
Short in curtain shield squib (RH) cir-
cuit (to B+)
Curtain shield airbag assy RH (squib)

Airbag sensor assy center

Floor wire No.2
Blink
B1165/87
(*3)
(05±1334)
Short in curtain shield squib (LH) cir-
cuit
Curtain shield airbag assy LH (squib)

Airbag sensor assy center

Floor wire
Blink
B1166/88
(*3)
(05±1337)
Open in curtain shield squib (LH) cir-
cuit
Curtain shield airbag assy LH (squib)

Airbag sensor assy center

Floor wire
Blink
B1167/85
(*3)
(05±1340)
Short in curtain shield squib (LH) cir-
cuit (to ground)
Curtain shield airbag assy LH (squib)

Airbag sensor assy center

Floor wire
Blink
B1168/86
(*3)
(05±1343)
Short in curtain shield squib (LH) cir-
cuit (to B+)
Curtain shield airbag assy LH (squib)

Airbag sensor assy center

Floor wire
Blink
B1180/17
(05±1346)

Short in D squib (2nd step) circuit
Horn button assy (squib, 2nd step)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B1181/18
(05±1350)

Open in D squib (2nd step) circuit
Horn button assy (squib, 2nd step)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B1182/19
(05±1354)

Short in D squib (2nd step) circuit (to
ground)
Horn button assy (squib, 2nd step)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B1183/22
(05±1358)

Short in D squib (2nd step) circuit (to
B+)
Horn button assy (squib, 2nd step)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
ON
B1185/57
(05±1362)
Short in P squib (2nd step) circuit
Instrument panel passenger airbag assy (squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
ON
B1186/58
(05±1365)
Open in P squib (2nd step) circuit
Instrument panel passenger airbag assy (squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
ON
B1187/55
(05±1368)
Short in P squib (2nd step) circuit (to
ground)
Instrument panel passenger airbag assy (squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
ON
B1188/56
(05±1371)
Short in P squib (2nd step) circuit (to
B+)
Instrument panel passenger airbag assy (squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
ON
B1650/B1651/
B1652/B1653/
49
(05±1374)
Short in knee squib circuit

Open in knee squib circuit

Short in knee squib circuit (to ground)

Short in knee squib circuit (to B+)
Instrument panel airbag assy (squib)

Instrument panel wire

Floor wire No.2

Airbag sensor assy center
ON
Normal
System normal±OFFNormal
(05±1383)
Voltage source drop
Battery

Airbag sensor assy centerON

H42671
Side Airbag
Sensor Assy RH
Airbag Front
RH Sensor
Airbag Sensor
Assy Center
Airbag Sensor
Front LH
Side Airbag
Sensor Assy LH
Airbag Sensor
Rear LH (*1)
Seat Position
Airbag Sensor
(*2)Horn Button Assy
(Squib) Instrument Panel
Passenger Airbag
Assy (Squib)Front Seat Outer
Belt Assy RH
(Squib)
Front Seat
Airbag Assy RH
(Squib)
Front Seat
Airbag Assy
LH (Squib)
Curtain Shield
Airbag Assy LH
(Squib) (*1) Airbag Sensor
Rear RH (*1)Curtain Shield
Airbag Assy RH
(Squib) (*1)
Front Seat Outer
Belt Assy LH
(Squib) Seat Position
Airbag Sensor
(*3)
Instrument Panel
Airbag Assy (Squib)
Spiral Cable
Sub±assy 7
15 8
16
513
614 3 11
412
19
210
23
24 2129
2230
1927
2028
17 25
1826
34 5
6
78
11
12 9
1025
26
27
28
29
30
*1: w/ Curtain Shield Airbag
*2: LHD
*3: RHD 05±1188
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)








H41439
D Squib
Airbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
Color: Orange
A
B
C
D
E
F
05±1210
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTCB0103/12SHORT IN D SQUIB CIRCUIT (TO B+)
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assy center, the spiral cable sub±assy and the horn button
assy.
This circuit actuates the SRS to deploy when the SRS deployment conditions a\
re fulfilled.
DTC B0103/12 is recorded when a short to B+ is detected in the D squib c\
ircuit.
DTC No.DTC Detecting ConditionTrouble Area
B0103/12

Short circuit in D squib wire harness (to B+)

D squib malfunction

Spiral cable sub±assy malfunction

Airbag sensor assy center malfunction
Horn button assy (D squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
See page 05±1198.
INSPECTION PROCEDURE
1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER ± HORN BUTTON
ASSY)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assy center and the horn button assy.
(d) Connect the negative (±) terminal cable to the battery, and turn the ignition switch to the ON position.
(e) Measure the voltage between the body ground and D+ of the connector ºEº.
OK:
Voltage: Below 1 V
NG Go to step 5
OK
054LM±10







\b

H40038
D SquibDLC3 DTC B0103/12
CG
TC Airbag
Sensor
Assy
Center
Spiral
Cable
Sub±assy
C
D
E
F
05±1212
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
3CHECK HORN BUTTON ASSY(D SQUIB)
(a)Turn the ignition switch to the LOCK position.
(b)Disconnect the negative (±) terminal cable from the bat- tery, and wait for at least 90 seconds.
(c)Connect the connectors to the horn button assy.
(d)Connect the negative (±) terminal cable to the battery, and wait for at least 2 seconds.
(e)Turn the ignition switch to the ON position, and wait for at
least 10 seconds.
(f)Clear the stored DTCs in the memory (See page 05±1184).
(g) Turn the ignition switch to the LOCK position.
(h) Turn the ignition switch to the ON position, and wait for at
least 10 seconds.
(i)Check the DTCs (See page 05±1184). OK:
DTC B0103/12 is not output.
HINT:
Codes other than code B0103/12 may be output at this time, but
they are not related to this check.
NG REPLACE HORN BUTTON ASSY
OK
4 USE SIMULATION METHOD TO CHECK
NG Go to step 1
OK
REPLACE ALL SRS COMPONENTS INCLUDING WIRE HARNESS








H41439
D Squib Airbag
Sensor
Assy
CenterSpiral
Cable
Sub±assy
Color: Orange
A
B
C
D
E
F
05±1206
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTCB0102/11SHORT IN D SQUIB CIRCUIT (TO GROUND)
CIRCUIT DESCRIPTION
The D squib circuit consists of the airbag sensor assy center, the spiral cable sub±assy and the horn button
assy.
This circuit actuates the SRS to deploy when the SRS deployment conditions a\
re fulfilled.
DTC B0102/11 is recorded when a short to ground is detected in the D squib circuit.\
DTC No.DTC Detecting ConditionTrouble Area
B0102/11

Short circuit in D squib wire harness (to ground)

D squib malfunction

Spiral cable sub±assy malfunction

Airbag sensor assy center malfunction
Horn button assy (D squib)

Spiral cable sub±assy

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
See page 05±1198.
INSPECTION PROCEDURE
1 CHECK D SQUIB CIRCUIT(AIRBAG SENSOR ASSY CENTER ± HORN BUTTON
ASSY)
(a) Turn the ignition switch to the LOCK position.
(b) Disconnect the negative (±) terminal cable from the bat-
tery, and wait for at least 90 seconds.
(c) Disconnect the connectors from the airbag sensor assy
center and the horn button assy.
(d) Measure the resistance between the body ground and D+ of the connector ºEº.
OK:
Resistance: 1 M
or Higher
NG Go to step 5
OK
054LL±10