Page 2725 of 3115
H20061
RS0XJ-01
H19946
ON OFF
ILL-
ILL+ E
SW
- SUPPLEMENTAL RESTRAINT SYSTEMRSCA OFF SWITCH
RS-95
2370 Author: Date:
2004 LAND CRUISER (RM1071U)
RSCA OFF SWITCH
INSPECTION
1. INSPECT RSCA OFF INDICATOR LIGHT
(a) Turn the ignition switch to ON.
(b) Check that the RSCA OFF indicator light goes off after it
comes on for 3 seconds.
(c) Check that the RSCA OFF indicator light comes on after
pressing the RSCA OFF switch approx. 2 seconds.
2. INSPECT RSCA OFF SWITCH CONTINUITY
(a) Remove the LWR instrument panel finish panel (See
page BO-84).
(b) Remove the RSCA OFF switch from the LWR instrument
panel finish panel.
(c) Inspect the continuity between the each terminals.
Switch positionTester connectionSpecified condition
OFFSW (3) e E (4)No continuity
Hold ONSW (3) e E (4)Continuity
IlluminationILL+ (1) e ILL- (2)Continuity
If continuity is not as specified, replace the RSCA OFF switch
or bulb.
Page 2737 of 3115
RS0VL-01
H21589
H03731
A
B
H03732
H03733
RS-44
- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AIRBAG ASSEMBLY
2319 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
NOTICE:
If the wiring connector of the SRS is disconnected
and the ignition switch is at ON position, DTCs will be
recorded.
Never use the airbag parts from another vehicle.
When replacing parts, replace them with new parts.
1. REMOVE FRONT SEAT
(a) Remove the 4 seat track covers and 4 bolts.
(b) Disconnect the power seat and side airbag connector.
NOTICE:
When handling the airbag connector, take care not to dam-
age the airbag wire harness.
(c) Remove the front seat.
NOTICE:
Be careful not to damage the body.
2. REMOVE HEADREST
3. REMOVE SEATBACK BOARD
Remove the seatback board as shown in the illustration.
HINT:
Remove the seatback board in order ºAº and ºBº as shown in
the illustration.
4. REMOVE SEAT CUSHION OUTER SHIELD
(a) Remove the 4 screws.
(b) Disconnect the connectors as shown in the illustration.
(c) Remove the seat cushion outer shield.
Page 2745 of 3115
RS0NJ-08
H20946
RS-80- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AND CURTAIN SHIELD AIRBAG SENSOR
ASSEMBLY
2355 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
NOTICE:
If the wiring connector of the SRS is disconnected
and the ignition switch is at ON position, DTCs will be
recorded.
Do not open the cover or the case of the ECU and vari-
ous electrical devices unless absolutely necessary
(If the IC terminals are touched, the IC may be de-
stroyed by static electricity.).
HINT:
For step 1 to 8, refer to page BO-97.
1. REMOVE REAR DOOR SCUFF PLATE
2. REMOVE FRONT DOOR SCUFF PLATE
3. REMOVE LAP BELT OUTER ANCHOR COVER
4. REMOVE FRONT SEAT OUTER BELT FLOOR AN-
CHOR
5. REMOVE FRONT DOOR OPENING TRIM WEATH-
ERSTRIP
6. REMOVE REAR DOOR OPENING TRIM WEATH-
ERSTRIP
7. REMOVE CENTER PILLAR LOWER GARNISH
8. REMOVE FRONT SEAT OUTER BELT
9. REMOVE SIDE AND CURTAIN SHIELD AIRBAG SEN-
SOR ASSEMBLY
(a) Disconnect the connector.
NOTICE:
Disconnect the connector with the sensor assembly
installed.
(b) Remove the 2 bolts and side and curtain shield airbag
sensor assembly.
Page 2750 of 3115
RS0VP-01
H20950
- SUPPLEMENTAL RESTRAINT SYSTEMSEAT POSITION SENSOR ASSEMBLY
RS-91
2366 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
NOTICE:
Do not open the cover or the case of the ECU and vari-
ous electrical devices unless absolutely necessary.
(If the IC terminals are touched, the IC may be de-
stroyed by static electricity.)
If the wiring connector of the SRS is disconnected
and the ignition switch is at ON position, DTCs will be
recorded.
1. REMOVE FRONT SEAT ASSEMBLY (DRIVER SIDE)
(See page BO-105)
2. REMOVE SEAT POSITION SENSOR ASSEMBLY
(a) Remove the bolt and seat position sensor assembly.
(b) Disconnect the connector.
Page 2756 of 3115
RS0NJ-08
H20946
RS-80- SUPPLEMENTAL RESTRAINT SYSTEMSIDE AND CURTAIN SHIELD AIRBAG SENSOR
ASSEMBLY
2355 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
NOTICE:
If the wiring connector of the SRS is disconnected
and the ignition switch is at ON position, DTCs will be
recorded.
Do not open the cover or the case of the ECU and vari-
ous electrical devices unless absolutely necessary
(If the IC terminals are touched, the IC may be de-
stroyed by static electricity.).
HINT:
For step 1 to 8, refer to page BO-97.
1. REMOVE REAR DOOR SCUFF PLATE
2. REMOVE FRONT DOOR SCUFF PLATE
3. REMOVE LAP BELT OUTER ANCHOR COVER
4. REMOVE FRONT SEAT OUTER BELT FLOOR AN-
CHOR
5. REMOVE FRONT DOOR OPENING TRIM WEATH-
ERSTRIP
6. REMOVE REAR DOOR OPENING TRIM WEATH-
ERSTRIP
7. REMOVE CENTER PILLAR LOWER GARNISH
8. REMOVE FRONT SEAT OUTER BELT
9. REMOVE SIDE AND CURTAIN SHIELD AIRBAG SEN-
SOR ASSEMBLY
(a) Disconnect the connector.
NOTICE:
Disconnect the connector with the sensor assembly
installed.
(b) Remove the 2 bolts and side and curtain shield airbag
sensor assembly.
Page 2761 of 3115
RS0VP-01
H20950
- SUPPLEMENTAL RESTRAINT SYSTEMSEAT POSITION SENSOR ASSEMBLY
RS-91
2366 Author: Date:
2004 LAND CRUISER (RM1071U)
REMOVAL
NOTICE:
Do not open the cover or the case of the ECU and vari-
ous electrical devices unless absolutely necessary.
(If the IC terminals are touched, the IC may be de-
stroyed by static electricity.)
If the wiring connector of the SRS is disconnected
and the ignition switch is at ON position, DTCs will be
recorded.
1. REMOVE FRONT SEAT ASSEMBLY (DRIVER SIDE)
(See page BO-105)
2. REMOVE SEAT POSITION SENSOR ASSEMBLY
(a) Remove the bolt and seat position sensor assembly.
(b) Disconnect the connector.
Page 2764 of 3115
H04096
H20916
H20917
H20918
H20919
RS-4
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
2279 Author: Date:
2004 LAND CRUISER (RM1071U)
6. SEAT BELT PRETENSIONER
The seat belt pretensioner system is a component of the front
seat outer belt. The seat belt pretensioner cannot be disas-
sembled.
7. SRS WARNING LIGHT
The SRS warning light is located on the combination meter. It
goes on to alert the driver of trouble in the system when a mal-
function is detected in the airbag sensor assembly self-diagno-
sis. In normal operating conditions when the ignition switch is
turned to the ON position, the light comes on for about 3 se-
conds and then goes off.
8. AIRBAG SENSOR ASSEMBLY
The airbag sensor assembly is mounted on the floor inside the
front console box. The airbag sensor assembly consists of an
airbag sensor, safing sensor, diagnosis circuit, ignition control,
drive circuit, etc. It receives signals from the airbag sensor, front
airbag sensor, side and curtain shield airbag sensor assembly,
curtain shield airbag sensor assembly and judges whether the
SRS must be activated or not. The airbag sensor assembly can-
not be disassembled.
9. FRONT AIRBAG SENSOR
The front airbag sensor is mounted on each of the radiator side
supports. The front airbag sensor consists of a frontal decelera-
tion sensor, diagnosis circuit, etc. These send signals to the air-
bag sensor assembly. The front airbag sensor cannot be disas-
sembled.
10. SIDE AND CURTAIN SHIELD AIRBAG SENSOR AS-
SEMBLY
The side and curtain shield airbag sensor assembly is mounted
in the LH and RH center pillars. The side and curtain shield air-
bag sensor assembly consist of a lateral deceleration sensor,
safing sensor, diagnosis circuit, etc. These send signals to the
airbag sensor assembly to judge whether the SRS side airbag
and curtain shield airbag must be activated or not. The side and
curtain shield airbag sensor assembly cannot be disas-
sembled.
Page 2771 of 3115
C51019H20054
Stopper
Locking PartSpring
Slider
Locking Arm
Rebounded by Slider
(Spring)Stopper
H20055
Z14034
Fig.1
Fig.2Power Source
Safing
Sensor
Squibs
Deceleration Sensor
- SUPPLEMENTAL RESTRAINT SYSTEMSRS AIRBAG
RS-1 1
2286 Author: Date:
2004 LAND CRUISER (RM1071U)
(4) Half connection prevention mechanism:
If the connector is not completely connected, the
connector is disconnected due to the spring opera-
tion to the extent that no continuity exists.
(5) Connector lock mechanism:
Locking the connector lock button securely con-
nects the connector.
(b) When the vehicle is involved in a frontal collision in the
hatched area (Fig. 1) and the shock is larger than the pre-
determined level, the SRS is activated automatically. A
safing sensor is designed to go on at a smaller decelera-
tion rate than the airbag sensor. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which
happens when a safing sensor and the deceleration sen-
sor go on simultaneously. When a deceleration force acts
on the sensors, 2 squibs in the driver airbag and front pas-
senger airbag ignite and generate gas. The gas discharg-
ing into the driver airbag and front passenger airbag rap-
idly increases the pressure inside the bags, breaking
open the steering wheel pad and instrument panel.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag's rear or
side.
