TOYOTA LAND CRUISER 1986 Factory Repair Manual

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.

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.

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.

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.

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
B1154/38
Curtain 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

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).

H01015H19233H21160H21171
Airbag
Sensor
Assembly
(+) (-) Curtain Shield
Airbag Sensor
Assembly RH
Airbag Sensor
Assembly
CSR-
CSR+
CSR+
CSR-
Floor No. 2 Wire
DI-846
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1039 Author
: Date
:
2004 LAND CRUISER (RM1071U)
4 Check floor No. 2 wire.
PREPARATION:
Using a service wire, connect CSR+ and CSR- of the floor No.
2 wire connector on the curtain shield airbag sensor assembly
RH side.
CHECK:
Measure the resistance between CSR+ and CSR- of the floor
No. 2 wire connector on the airbag sensor assembly side.
OK:
Resistance: Below 1 W
NG Repair or replace floor No. 2 wire.
OK

H01015H16876H19235H19291
Airbag
Sensor
Assembly
(-) (+)VUCR Airbag Sensor
Assembly
ESCR
VUCRESCR Curtain Shield
Airbag Sensor
Assembly RH
Floor No. 2 Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-847
1040 Author
: Date
:
2004 LAND CRUISER (RM1071U)
5 Check floor No. 2 wire.
PREPARATION:
Using a service wire, connect VUCR and ESCR of the floor No.
2 wire connector on the curtain shield airbag sensor assembly
RH side.
CHECK:
Measure the resistance between VUCR and ESCR of the floor
No. 2 wire connector on the airbag sensor assembly side.
OK:
Resistance: Below 1 W
NG Repair or replace floor No. 2 wire.
OK

H01013H21161H21172
Airbag
Sensor
Assembly
Airbag Sensor Assembly
(+) (-) Curtain Shield
Airbag Sensor
Assembly RH
CSR+
VUCRCSR-Floor No. 2 Wire
AB0119
H01013
H21162H21173
Airbag
Sensor
Assembly
ON
Curtain Shield
Airbag Sensor
Assembly RH
(-)
(+)
CSR+ ESCRCSR-
VUCR Floor No. 2 Wire
Airbag Sensor Assembly
DI-848
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1041 Author
: Date
:
2004 LAND CRUISER (RM1071U)
6 Check floor No. 2 wire (to ground).
CHECK:
Measure the resistance between the body ground and each of
VUCR, CSR+ and CSR- of the floor No. 2 wire connector on the
airbag sensor assembly side.
OK:
Resistance: 10 kW or Higher
NG Repair or replace floor No. 2 wire.
OK
7 Check floor No. 2 wire (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 VUCR, CSR+, CSR- and ESCR of the floor No. 2 wire
connector on the airbag sensor assembly side.
OK:
Voltage: Below 1 V
NG Repair or replace floor No. 2 wire.
OK

H01012AB0119H10600H16836H16837H21141
Airbag
Sensor
Assembly
CG
TCON
" u
DTC B1154/38 " u
DLC3Curtain Shield
Airbag Sensor
Assembly LH
DTC B1155/39
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-849
1042 Author
: Date
:
2004 LAND CRUISER (RM1071U)
8 Check airbag 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 connector to the airbag sensor assembly.
(d) Change the curtain shield airbag sensor assembly LH
position with RH position.
(e) 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:
Neither DTC B1154/38 nor B1155/39 are not output.
HINT:
Codes other than code B1154/38 or B1155/39 may be output
at this time, but they are not relevant to this check.
NG Replace airbag sensor assembly
(DTC B1154/38 is output).
NG Replace curtain shield airbag sensor assembly
RH (DTC B1155/39 is output).
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.