Page 1619 of 3115
H19236H21576H21582H21738
Airbag
Sensor
Assembly
LSP-
Seat
Position
Sensor
Assembly
Airbag Sensor
Assemblyw/o Side Airbag:
(-) LSP+
(+)
(+)
(-)
Airbag Sensor
Assemblyw/ Side Airbag:
LSP- LSP+
H21577H21583H21739
Airbag
Sensor
Assembly
Seat
Position
Sensor
Assembly
(+)
(-)
Airbag Sensor
Assemblyw/o Side Airbag:
LSP-LSP+LSP+
LSP-
(+)
(-)
Airbag Sensor
Assemblyw/ Side Airbag:
DI-838
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1031 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check wire harness.
PREPARATION:
Using a service wire, connect LSP+ and LSP- of the connector
on the seat position sensor assembly side between the airbag
sensor assembly and the seat position sensor assembly.
CHECK:
Measure the resistance between LSP+ and LSP- of the con-
nector on the airbag sensor assembly side between the seat
position sensor assembly and the airbag sensor assembly.
OK:
Resistance: Below 1 W
NG Go to step 9.
OK
5 Check wire harness (to ground).
PREPARATION:
Release the service wire from the connector on the seat posi-
tion sensor assembly side.
CHECK:
Measure the resistance between the body ground and each of
LSP+ and LSP- of the connector on the airbag sensor assem-
bly side between the seat position sensor assembly and the air-
bag sensor assembly.
OK:
Resistance: 10 kW or Higher
NG Go to step 10.
OK
Page 1620 of 3115
H21584H21578AB0119H21740
Airbag
Sensor
Assembly
Seat
Position
Sensor
Assembly
(+)
(-)
Airbag Sensor
Assemblyw/o Side Airbag:
LSP-LSP+
LSP+ LSP-
(+)
(-)
Airbag Sensor
Assemblyw/ Side Airbag:
ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-839
1032 Author: Date:
2004 LAND CRUISER (RM1071U)
6 Check wire harness (to B+).
PREPARATION:
Connect the negative (-) terminal cable to the battery, and wait
at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the body ground and each
of LSP+ and LSP- of the connector on the airbag sensor
assembly side between the seat position sensor assem-
bly and the airbag sensor assembly.
OK:
Voltage: Below 1 V
NG Go to step 11.
OK
Page 1621 of 3115
H10600AB0119H21741
Airbag
Sensor
Assembly
ON
DLC3DTC B1153/25
CG
TC
" u
" u
Seat
Position
Sensor
Assembly
DI-840
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1033 Author: Date:
2004 LAND CRUISER (RM1071U)
7 Check seat position sensor assembly.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect the negative (-) terminal cable from the bat-
tery, and wait at least for 90 seconds.
(c) Connect the connectors of the seat position sensor as-
sembly and the airbag sensor assembly.
(d) Connect the negative (-) terminal cable to the battery,
and wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 10 se-
conds.
(b) Clear the DTC stored in memory (See page DI-692).
(c) Turn the ignition switch to LOCK, and wait at least for 10
seconds.
(d) Turn the ignition switch to ON, and wait at least for 10 se-
conds.
(e) Check the DTC (See page DI-692).
OK:
DTC B1153/25 is not output.
HINT:
Codes other that code B1153/25 may be output at this time, but
they are not relevant to this check.
NG Replace seat position sensor assembly,
then go to next step.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1622 of 3115
H10600AB0119H21741
Airbag
Sensor
Assembly
ON
DLC3DTC B1153/25
CG
TC
Seat
Position
Sensor
Assembly
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-841
1034 Author: Date:
2004 LAND CRUISER (RM1071U)
8 Is DTC B1153/25 output again ?
PREPARATION:
(a) Disconnect the negative (-) terminal cable from the bat-
tery, and wait at least for 90 seconds.
(b) Connect the negative (-) terminal cable to the battery,
and wait at least for 2 seconds.
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 10 se-
conds.
(b) Clear the DTC stored in memory (See page DI-692).
(c) Turn the ignition switch to LOCK, and wait at least for 10
seconds.
(d) Turn the ignition switch to ON, and wait at least for 10 se-
conds.
(e) Check the DTC (See page DI-692).
OK:
DTC B1153/25 is not output.
HINT:
Codes other that code B1153/25 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.
Page 1623 of 3115
H21271H19236H21664H21742
Airbag
Sensor
Assembly
Seat
Position
Sensor
Assembly
LSP+
LSP-(+)
(-) Front Seat
Wire LHFloor No. 1 Wire
H21271H21665H21743
Airbag
Sensor
Assembly
Seat
Position
Sensor
Assembly
LSP+LSP-
(+)
(-) Front Seat
Wire LHFloor No. 1 Wire
DI-842
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1035 Author: Date:
2004 LAND CRUISER (RM1071U)
9 Check front seat wire LH.
PREPARATION:
(a) Disconnect the front seat wire LH connector from the floor
No. 1 wire.
(b) Using a service wire, connect LSP+ and LSP- of the front
seat wire LH connector on the seat position sensor as-
sembly side.
CHECK:
Measure the resistance between LSP+ and LSP- of the front
seat wire LH connector on the floor No. 1 wire side.
OK:
Resistance: Below 1 W
NG Repair or replace front seat wire LH.
OK
Repair or replace floor No. 1 wire.
10 Check front seat wire LH (to ground).
PREPARATION:
(a) Disconnect the front seat wire LH connector from the floor
No. 1 wire.
(b) Release the service wire from the front seat wire LH con-
nector on the seat position sensor assembly side.
CHECK:
Measure the resistance between the body ground and each of
LSP+ and LSP- of the front seat wire LH connector on the floor
No. 1 wire side.
OK:
Resistance: 10 kW or Higher
NG Repair and replace floor No. 1 wire.
OK
Repair and replace floor No. 1 wire.
Page 1624 of 3115
H21271H21666AB0119H21744
Airbag
Sensor
Assembly
Seat
Position
Sensor
Assembly
LSP+LSP-
(+)
(-) Front Seat
Wire LHFloor No. 1 Wire
ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-843
1036 Author: Date:
2004 LAND CRUISER (RM1071U)
11 Check front seat wire LH (to B+).
PREPARATION:
Disconnect the front seat wire LH connector from the floor No.
1 wire.
CHECK:
Measure the voltage between the body ground and each of
LSP+ and LSP- of the front seat wire LH connector on the floor
No. 1 wire side.
OK:
Voltage: Below 1 V
NG Repair or replace front seat wire LH.
OK
Repair or replace floor No. 1 wire.
Page 1625 of 3115
H01450
S14
Curtain Shield Airbag Sensor Assembly RHAirbag Sensor Assembly
GR-R
L-B L-WLG-B
CSR- ESCR
CSR+
VUCR
4 3 2 1
4 20
18
19CSR- ESCR
CSR+
VUCR C27
(*1)
(*1)
(*1)
(*1)
*1: w/ Side AirbagC27
C27
C27 DI-844
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1037 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B1154/38 Curtain Shield Airbag Sensor Assem-
bly RH Malfunction
CIRCUIT DESCRIPTION
The curtain shield airbag sensor assembly RH consists of the safing sensor, diagnosis circuit and lateral de-
celeration sensor, etc.
It receives signals from the lateral deceleration sensor, judges whether or not the SRS must be activated,
and detects diagnosis system malfunction.
DTC B1154/38 is recorded when occurrence of a malfunction in the curtain shield airbag sensor assembly
RH is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1154/38Curtain shield airbag sensor assembly RH malfunction
Curtain shield airbag sensor assembly RH
Floor No. 2 wire
Airbag sensor assembly
HINT:
DTC B1154/38 is indicated only for the vehicle equipped with the side airbag.
WIRING DIAGRAM
DIB3Y-01
Page 1626 of 3115
AB0119H10600H16832H17135
ON
CG
TCDTC B1154/38
DLC3
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-845
1038 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Is DTC B1154/38 output?
CHECK:
(a) Turn the ignition switch to ON, and wait at least for 10 se-
conds.
(b) Clear the DTC stored in memory (See page DI-692).
(c) Turn the ignition switch to LOCK, and wait at least for 10
seconds.
(d) Turn the ignition switch to ON, and wait at least for 10 se-
conds.
(e) Check the DTC (See page DI-692).
OK:
DTC B1154/38 is output.
HINT:
Codes other than code B1154/38 may be output at this time, but
they are not relevant to this check.
NO The malfunctioning part can now be considered
normal. To make sure of this, use the simulation
method to check.
YES
2 Is connector of curtain shield airbag sensor assembly RH properly connected?
NO Connect connector.
YES
3 Prepare for inspection (See step 1 on DI-923).
