Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Sienna 2004-2007 Approved SRM 04 05 21q2h73z terecu40
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05-784
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
05IV9-04
TERMINALS OF ECU
1. w/ Side airbag:
AIRBAG SENSOR ASSY CENTER
A20 A21 A22
H40533
No. Symbol Destination
A - Electrical Connector Check Mechanism
B - Electrical Connector Check Mechanism
A20-1 CSL- Airbag Sensor Rear LH
A20-2 LBE- Front Seat Inner Belt Assy LH (Buckle SW)
A20-3 LSP- Seat Position Airbag Sensor
A20-4 LSP+ Seat Position Airbag Sensor
A20-5 CL2+ Curtain Shield Airbag Assy LH (Curtain Shield Squib Rear LH)
A20-6 CL2- Curtain Shield Airbag Assy LH (Curtain Shield Squib Rear LH)
A20-7 PL- Front Seat Outer Belt Assy LH (P/T Squib LH)
A20-8 PL+ Front Seat Outer Belt Assy LH (P/T Squib LH)
Curtain Shield Airbag Assy LH (Curtain Shield Squib Front
A20-9 ICL+
LH)
Curtain Shield Airbag Assy LH (Curtain Shield Squib Front
A20-10 ICL-
LH)
A20-11 SFL- Front Seat Airbag Assy LH (Side Squib LH)
A20-12 SFL+ Front Seat Airbag Assy LH (Side Squib LH)
A20-13 ESCL Airbag Sensor Rear LH
A20-14 VUCL Airbag Sensor Rear LH
A20-15 CSL+ Airbag Sensor Rear LH
A20-16 VUPL Side Airbag Sensor Assy LH
A20-17 SSL+ Side Airbag Sensor Assy LH
A20-18 ESL Side Airbag Sensor Assy LH
A20-19 LBE+ Front Seat Inner Belt Assy LH (Buckle SW)
A20-20 SSL- Side Airbag Sensor Assy LH
A21-1 P-AB Passenger Airbag ON/OFF Indicator
A21-5 IG2 IGN Fuse
Front Passenger Airbag Assy (P Squib, Dual stage - 2nd
A21-7 P2-
step)
Front Passenger Airbag Assy (P Squib, Dual stage - 2nd
A21-8 P2+
step)
A21-9 +SR Airbag Sensor Front RH
A21-10 P+ Front Passenger Airbag Assy (P Squib)
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 967
05-785
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
No. Symbol Destination
A21-11 P- Front Passenger Airbag Assy (P Squib)
A21-12 SIL Diagnosis
A21-13 D- Horn Button Assy (D Squib)
A21-14 D+ Horn Button Assy (D Squib)
A21-15 +SL Airbag Sensor Front LH
A21-16 D2+ Horn Button Assy (D Squib, Dual stage - 2nd step)
A21-17 D2- Horn Button Assy (D Squib, Dual stage - 2nd step)
A21-20 -SR Airbag Sensor Front RH
A21-22 MPX2 Combination Meter Assy
A21-24 MPX1 Combination Meter Assy
A21-25 PAON Passenger Airbag ON/OFF Indicator
A21-26 -SL Airbag Sensor Front LH
A21-27 E1 Ground
A21-28 E2 Ground
A22-1 FSR+ Occupant Classification ECU
A22-2 FSR- Occupant Classification ECU
A22-4 CSR- Airbag Sensor Rear RH
A22-5 SFR+ Front Seat Airbag Assy RH (Side Squib RH)
A22-6 SFR- Front Seat Airbag Assy RH (Side Squib RH)
Curtain Shield Airbag Assy RH (Curtain Shield Squib Front
A22-7 ICR-
RH)
Curtain Shield Airbag Assy RH (Curtain Shield Squib Front
A22-8 ICR+
RH)
A22-9 PR+ Front Seat Outer Belt Assy RH (P/T Squib RH)
A22-10 PR- Front Seat Outer Belt Assy RH (P/T Squib RH)
Curtain Shield Airbag Assy RH (Curtain Shield Squib Rear
A22-11 CR2-
RH)
Curtain Shield Airbag Assy RH (Curtain Shield Squib Rear
A22-12 CR2+
RH)
A22-13 SSR- Side Airbag Sensor Assy RH
A22-15 ESR Side Airbag Sensor Assy RH
A22-16 SSR+ Side Airbag Sensor Assy RH
A22-17 VUPR Side Airbag Sensor Assy RH
A22-18 CSR+ Airbag Sensor Rear RH
A22-19 VUCR Airbag Sensor Rear RH
A22-20 ESCR Airbag Sensor Rear RH
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 968
05-786
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
2. w/o Side airbag:
AIRBAG SENSOR ASSY CENTER
A20 A21 A22
H40028
No. Symbol Destination
A - Electrical Connector Check Mechanism
B - Electrical Connector Check Mechanism
A20-1 PL- Front Seat Outer Belt Assy LH (P/T Squib LH)
A20-2 PL+ Front Seat Outer Belt Assy LH (P/T Squib LH)
A20-3 LSP+ Seat Position Airbag Sensor
A20-6 LBE- Front Seat Inner Belt Assy LH (Buckle SW)
A20-8 LSP- Seat Position Airbag Sensor
A20-11 LBE+ Front Seat Inner Belt Assy LH (Buckle SW)
A21-1 P-AB Passenger Airbag ON/OFF Indicator
A21-5 IG2 IGN Fuse
Front Passenger Airbag Assy (P Squib, Dual stage - 2nd
A21-7 P2-
step)
Front Passenger Airbag Assy (P Squib, Dual stage - 2nd
A21-8 P2+
step)
A21-9 +SR Airbag Sensor Front RH
A21-10 P+ Front Passenger Airbag Assy (P Squib)
A21-11 P- Front Passenger Airbag Assy (P Squib)
A21-12 SIL Diagnosis
A21-13 D- Horn Button Assy (D Squib)
A21-14 D+ Horn Button Assy (D Squib)
A21-15 +SL Airbag Sensor Front LH
A21-16 D2+ Horn Button Assy (D Squib, Dual stage - 2nd step)
A21-17 D2- Horn Button Assy (D Squib, Dual stage - 2nd step)
A21-20 -SR Airbag Sensor Front RH
A21-22 MPX2 Combination Meter Assy
A21-24 MPX1 Combination Meter Assy
A21-25 PAON Passenger Airbag ON/OFF Indicator
A21-26 -SL Airbag Sensor Front LH
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 969
05-787
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
No. Symbol Destination
A21-27 E1 Ground
A21-28 E2 Ground
A22-3 FSR+ Occupant Classification ECU
A22-5 PR+ Front Seat Outer Belt Assy RH (P/T Squib RH)
A22-6 PR- Front Seat Outer Belt Assy RH (P/T Squib RH)
A22-10 FSR- Occupant Classification ECU
3. OCCUPANT CLASSIFICATION ECU
O4 O3
6 5 4 3 21 6 5 4 3 21
121110 9 8 7 121110 9 8 7
H43128
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specification
+B (O3-1) - GND (O3-3) W-L - W-B Power Source IG switch ON 10 to 14 V
DIA (O3-2) -
W - W-B Diagnosis (DLC3) IG switch ON Pulse generation
GND (O3-3)
GND (O3-3) -
W-B - Body ground Ground Always Below 1
Body ground
FSR- (O3-4) - Airbag sensor assy center
G-B - W-B Always Below 1
GND (O3-3) communication line (-)
BGND (O3-5) - Passenger side buckle
L - W-B Always Below 1
GND (O3-3) switch ground line
IG (O3-7) - GND (O3-3) B-O - W-B Power Source IG switch ON 10 to 14 V
FSR+ (O3-8) - Airbag sensor assy center
G-R - G-B IG switch ON Pulse generation
FSR- (O3-4) communication line
BSW (O3-9) - Passenger side buckle Buckle switch ON 10 to 14 V
R-L
BGND (O3-5) switch line Buckle switch OFF Below 1 V
SGD1 (O4-1) - Passenger side buckle
O - W-B Always Below 1
GND (O3-3) switch circuit
Occupant classification
SGD2 (O4-2) -
B-Y - W-B sensor front RH ground Always Below 1
GND (O3-3)
line
SGD3 (O4-3) - Occupant classification
R-B - W-B Always Below 1
GND (O3-3) sensor rear LH ground line
SGD4 (O4-4) - Occupant classification
R-W - W-B Always Below 1
GND (O3-3) sensor rear RH ground line
Occupant classification IG switch ON, a load is ap-
SVC3 (O4-5) -
Y-B - R-B sensor rear LH power sup- plied to occupant classifi- 4.5 to 5.1 V
SGD3 (O4-3)
ply line cation sensor rear LH
Occupant classification IG switch ON, a load is ap-
SVC4 (O4-6) -
Y - R-W sensor rear RH power sup- plied to occupant classifi- 4.5 to 5.1 V
SGD4 (O4-4)
ply line cation sensor rear RH
IG switch ON, a load is ap-
SIG1 (O4-7) - Occupant classification
G-O plied to occupant classifi- 0.2 to 4.9 V
SGD1 (O4-1) sensor front LH signal line
cation sensor front LH
IG switch ON, a load is ap-
SIG2 (O4-8) - Occupant classification
LG - B-Y plied to occupant classifi- 0.2 to 4.9 V
SGD2 (O4-2) sensor rear RH signal line
cation sensor front RH
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 970
05-788
DIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
Symbols (Terminal No.) Wiring Color Terminal Description Condition Specification
IG switch ON, a load is ap-
SIG3 (O4-9) - Occupant classification
G-B - R-B plied to occupant classifi- 0.2 to 4.9 V
SGD3 (O4-3) sensor rear LH signal line
cation sensor rear LH
IG switch ON, a load is ap-
SIG4 (O4-10) - Occupant classification
L-W - R-W plied to occupant classifi- 0.2 to 4.9 V
SGD4 (O4-4) sensor front RH signal line
cation sensor rear RH
Occupant classification IG switch ON, a load is ap-
SVC1 (O4-11) -
V-O sensor rear LH power sup- plied to occupant classifi- 4.5 to 5.1 V
SGD1 (O4-1)
ply line cation sensor front LH
Occupant classification IG switch ON, a load is ap-
SVC2 (O4-12) -
P - B-Y sensor rear LH power sup- plied to occupant classifi- 4.5 to 5.1 V
SGD2 (O4-2)
ply line cation sensor front RH
2005 SIENNA REPAIR MANUAL (RM1163U)
Author : Date : 971
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