2005 TOYOTA AVENSIS diagram

\b






H41465
Curtain Shield
Squib RH Airbag
Sensor
Assy
Center
Floor Wire No.2
A
B
C
D
05±1328
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1162/81 SHORT IN CURTAIN SHIELD SQUIB (RH) CIRCUIT (TO GROUND)
CIRCUIT DESCRIPTION
The curtain shield squib RH circuit consists of the airbag sensor assy cent\
er and the curtain shield airbag
assy RH.
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B1162/81 is recorded when a short to ground is detected in the curtain shi\
eld squib RH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1162/81

Short circuit in curtain shield squib RH wire harness (to
ground)

Curtain shield squib RH malfunction

Airbag sensor assy malfunction
Curtain shield airbag assy RH (Curtain shield squib RH)

Airbag sensor assy center

Floor wire No.2
HINT:
DTC B1162/81 is indicated only for the vehicle equipped with the curtain shiel\
d airbag.
WIRING DIAGRAM
See page 05±1322.
INSPECTION PROCEDURE
1 CHECK FLOOR WIRE NO.2(CURTAIN SHIELD SQUIB RH CIRCUIT)
(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 curtain shield airbag assy RH.
(d) Measure the resistance between the body ground and ICR+ of the connector ºCº.
OK:
Resistance: 1 M
or Higher
NG REPAIR OR REPLACE FLOOR WIRE NO.2
OK
054MF±05

H43588
Driver Side J/BAirbag Sensor Assy Center
D5 DLC3
TCW−
L
J21D
J/C
(*2) TC
(*2)
W− L
(*1) J20
B
(*2)
J8
B
(*1) W−
L
DB17
DD8
J8 B
(*1) A27
19
13 W−
L
1AZ−
FSE, 1CD− FTV Engine:
CG TC TC
TC
TC
W−
L
W− L
W− L
W−
L
W−B
W−
B
W−
B
W− B
(*1)
(*2) J9 J21
DD
(*2)(*1)
DL DC
15
3
E9
S1
S2
20
17
25
(*2)
A
J16
J/C
A
(*1)
IO IP
(*3)
M1
16
4
CA
CB 3
6
(*6)
(*4, *5)
Skid Control ECU with Actuator Skid Control ECU with Actuator ECM
Multi− Display
*1: LHD *2: RHD
*3: w/ Navigation System (Map Type) *4:
1AZ− FSE
*5: 1CD− FTV (w/ VSC)
*6: 1CD− FTV (w/ ABS)
Center J/B
−
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05−1391
TC TERMINAL CIRCUIT
CIRCUIT DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
The DTCs are displayed by blinking the SRS warning light.
WIRING DIAGRAM
05C65 −01

± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05±1389
AVENSIS REPAIR MANUAL (RM1018E)
SRS WARNING LIGHT CIRCUIT MALFUNCTION (DOES NOT LIGHT
UP, WHEN IGNITION SWITCH IS TURNED TO ON)
CIRCUIT DESCRIPTION
The SRS warning light is located on the combination meter assy.
When the SRS is normal, the SRS warning light comes on for approx. 6 seconds after the ignition switch
is turned from the LOCK position to the ON position, and then it turns off automatically.
If there is a malfunction in the SRS, the SRS warning light comes on to inform a trouble to the driver.
When between terminal TC and terminal CG of the DLC3 are connected, the DTC is displayed by blinking
the SRS warning light.
WIRING DIAGRAM
See page .
INSPECTION PROCEDURE
1 CHECK SOURCE VOLTAGE
(a) Measure the voltage of the battery.
OK:
Voltage: 10 to 14 V
NG HARNESS BETWEEN BATTERY AND AIRBAG
SENSOR ASSY CENTER, AND CHARGING
SYSTEM
OK
2 CHECK AIR BAG SENSOR ASSY CENTER
(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.
(d) Connect the negative (±) terminal cable to the battery, and turn the ignition switch to the ON position.
(e) Check that the SRS warning light operation.
OK:
The SRS warning light does not come on.
NG REPLACE AIR BAG SENSOR ASSY CENTER
OK
056N4±03

H42518
Combination Meter Assy
Driver Side J/BAirbag Sensor Assy Center
*1: LHD
*2: RHD
*3: Gasoline
*4: 1CD±FTV SRS8
C11B±Y
J16
J/C(*2)
IL 17
C1012
DA6
DDB±Y3
A27
LA
W±B
J15
J/C W±B
(*1)
A
AW±B
W±B
(*1, *4)(*1, *3)(*2) W±B
A
A J17
J/C
A
IO
IK 05±1386
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
SRS WARNING LIGHT CIRCUIT MALFUNCTION (ALWAYS LIGHT
UP, WHEN IGNITION SWITCH IS ACC OR LOCK POSITION)
CIRCUIT DESCRIPTION
The SRS warning light is located on the combination meter assy.
When the SRS is normal, the SRS warning light comes on for approx. 6 seconds after the ignition switch
is turned from the LOCK position to the ON position, and then it turns off automatically.
If there is a malfunction in the SRS, the SRS warning light comes on to inform a trouble to the driver.
When between terminal TC and terminal CG of the DLC3 are connected, the DTC is displayed by blinking
the SRS warning light.
WIRING DIAGRAM
05C64±01

H42517
Airbag Sensor Assy Center
A275
E1
E2 27IG2 2
1
Battery28 4IGN Driver Side J/B
IG2
AM2 I13
Ignition SW
B
4 3 6
Engine Room R/B No.1, Engine Room J/B No.1 AM2B±R
DD
W±BB±W
A27
A27 DD DH5
DAW±B 1 11
B±R1
1
1A
2
1 IE4 IP1
(*3)
(*4)(*1) B±G
Engine Room R/B No.3
Engine Room J/B No.43
DD 4B4A
3 9(*1) B±G (*2)
(*1) B±GB
(*2)
Driver Side J/B
IJ FL MAIN
W±B
*1: Gasoline
*2: 1CD±FTV*3: LHD
*4: RHD B±R
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
05±1383
AVENSIS REPAIR MANUAL (RM1018E)
SOURCE VOLTAGE DROP
CIRCUIT DESCRIPTION
The SRS is equipped with a voltage±increase circuit (DC±DC converter) in the airbag sensor assy center
in case the source voltage drops.
When the battery voltage drops, the voltage±increase circuit (DC±DC converter) functions to increase the
voltage of the SRS to normal voltage.
A malfunction in this circuit is displayed by different form from the other code. The source voltage drop is
indicated when the SRS warning light comes on without showing any DTCs.
Malfunction in this circuit is not recorded in the airbag sensor assy center. The SRS warning light automatical-
ly goes off when the source voltage returns to normal.
DTC No.Diagnosis
(Normal)Source voltage drop
WIRING DIAGRAM
056N1±04

H42516
K3
Knee Airbag SquibAirbag Sensor Assy Center
Y±R
IN1
2
1A2811
DK±
1 2
A2812
IN1 Y±BY±R
Y±B
DK+ 05±1374
± DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1650/49 SHORT IN KNEE SQUIB CIRCUIT
DTC B1651/49 OPEN IN KNEE SQUIB CIRCUIT
DTC B1652/49 SHORT IN KNEE SQUIB CIRCUIT (TO
GROUND)
DTC B1653/49 SHORT IN KNEE SQUIB CIRCUIT (TO B+)
CIRCUIT DESCRIPTION
The knee squib circuit consists of the airbag sensor assy center and the instrument panel airbag assy.
This circuit actuates the SRS to deploy when the SRS deployment conditions are fulfilled.
When the malfunction is detected in the knee squib circuit under the following conditions, these codes are
recorded.

DTC B1650/49 is for short circuit

DTC B1651/49 is for open circuit

DTC B1652/49 is for short to ground

DTC B1653/49 is for short to B+
DTC No.DTC Detection ConditionTrouble Area
B1650/49
B1651/49
B1652/49
B1653/49

Short circuit between DK+ wire harness and DK± wire har-
ness of squib

Open circuit in DK+ wire harness or DK± wire harness of
squib

Short circuit in knee squib wire harness (to ground)

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

Knee squib malfunction

Airbag sensor assy center

Instrument panel airbag assy (Knee squib)

Instrument panel wire

Floor wire No.2

Airbag sensor assy center
WIRING DIAGRAM
05C63±01




H40584
P Squib
(2nd step)Airbag
Sensor
Assy
Center
P2+Instrument Panel Wire
A
B
C
D
±
DIAGNOSTICS SUPPLEMENTAL RESTRAINT SYSTEM
05±1371
AVENSIS REPAIR MANUAL (RM1018E)
DTC B1188/56 SHORT IN P SQUIB (2ND STEP) CIRCUIT
(TO B+)
CIRCUIT DESCRIPTION
The P squib (2nd step) circuit consists of the airbag sensor assy center \
and the instrument panel passenger
airbag assy.
This circuit actuates the SRS to deploy when the SRS deployment conditio\
ns are fulfilled.
DTC B1188/56 is recorded when a short to B+ is detected in the P squib (2nd s\
tep) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1188/56

Short circuit in P squib (2nd step) wire harness (to B+)

P squib (2nd step) malfunction

Airbag sensor assy center malfunction
Instrument panel passenger airbag assy (P squib, 2nd step)

Airbag sensor assy center

Instrument panel wire
WIRING DIAGRAM
See page 05±1362.
INSPECTION PROCEDURE
1 CHECK INSTRUMENT PANEL WIRE(P SQUIB, 2ND STEP CIRCUIT)
(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 instrument panel passenger airbag 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 P2+ of the connector ºCº.
OK:
Voltage: Below 1 V
NG REPAIR OR REPLACE INSTRUMENT PANEL WIRE
OK
056N0±03

I35619
Steering Pad SW LH
AU1
AU2
EAU12
11
10LG
P
W±RR117
8
6SW1
SW2
GND Radio Receiver Assy
R11
R11 S15
S15
S15 05±1432
± DIAGNOSTICSAUDIO SYSTEM
AVENSIS REPAIR MANUAL (RM1018E)
A AUDIO SYSTEM CANNOT BE OPERATED WITH STEERING PAD
SWITCH
WIRING DIAGRAM
05C55±01