TOYOTA LAND CRUISER 1998 Factory Repair Manual

H01016AB0119
H08394H08269
Airbag
Sensor
Assembly
PL+
(-) (+) ON
P/T Squib LHFloor No. 1 Wire
DI-800
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
993 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC B0138/72 Short in P/T Squib LH Circuit (to B+)
CIRCUIT DESCRIPTION
The P/T squib LH circuit consists of the airbag sensor assembly and seat belt pretensioner LH.
It causes the SRS to deploy when the SRS deployment conditions are satisfied.
For details of the function of each component, see OPERATION on page RS-3.
DTC B0138/72 is recorded when a B+ short is detected in the P/T squib LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0138/72

Short in P/T squib LH circuit (to B+)

P/T squib LH malfunction

Airbag sensor assembly malfunction
Seat belt pretensioner LH (P/T squib LH)

Airbag sensor assembly

Floor No. 1 wire
WIRING DIAGRAM
See page DI-790.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-923).
2 Check floor No. 1 wire (P/T squib LH circuit).
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 PL+
of the floor No. 1 wire connector on the seat belt preten-
sioner LH (P/T squib LH) side.
OK:
Voltage: Below 1 V
NG Repair or replace floor No. 1 wire.
OK
DI6PQ-16

H01017H02139AB0119H01085 H10600H10633
Airbag
Sensor
Assembly
PL+
PL-
DTC B0138/72
ON " u
DLC3
TC CG
P/T Squib LHFloor No. 1 Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-801
994 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector to the airbag sensor assembly.
(b) Using a service wire, connect PL+ and PL- of the floor No.
1 wire connector on the seat belt pretensioner LH (P/T
squib LH) side.
(c) 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 B0138/72 is not output.
HINT:
Codes other than code B0138/72 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

AB0119H01018
H01085 H10600H10634
"u
ONAirbag
Sensor
Assembly
DTC B0138/72 DLC3
TC CG
P/T Squib LH
DI-802
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
995 Author
: Date
:
2004 LAND CRUISER (RM1071U)
4 Check P/T squib LH.
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 seat belt pretensioner LH (P/T squib LH)
connector.
(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 B0138/72 is not output.
HINT:
Codes other than code B0138/72 may be output at this time, but
they are not relevant to this check.
NG Replace seat belt pretensioner LH
(P/T squib LH).
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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.

AB0119H21169H21525
(-)
(+) ONAirbag Sensor Assembly
IG2
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-803
996 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC B1100/31 Airbag Sensor Assembly Malfunction
CIRCUIT DESCRIPTION
The airbag sensor assembly consists of the airbag sensor, safing sensor, drive circuit, diagnosis circuit and
ignition control, etc.
It receives signals from the airbag sensor, judges whether or not the SRS must be activated, and detects
diagnosis system malfunction.
DTC B1100/31 is recorded when occurrence of a malfunction in the airbag sensor assembly is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1100/31
Airbag sensor assembly malfunction
Airbag sensor assembly
INSPECTION PROCEDURE
HINT:
When a malfunction code other than code B1100/31 is displayed at the same time, first repair the malfunction
indicated by the malfunction code other than code B1100/31.
1 Prepare for inspection (See step 1 on page DI-923).
2 Check airbag sensor assembly.
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 IG2
of the dash wire connector on the airbag sensor assembly
side.
OK:
Voltage: 10 - 14 V
NG Check that an abnormality occurs on the battery
and charging system.
OK
DI6PR-15

AB0119
FI1394
H10600H10635
ON
DTC B1100/31
DLC3
TC CG
DI-804
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
997 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Is DTC B1100/31 output again?
PREPARATION:
Clear the DTC (See page DI-692).
CHECK:
(a) Turn the ignition switch to LOCK, and wait at least for 10
seconds.
(b) Turn the ignition switch to ON, and wait at least for 10 se-
conds.
(c) Repeat operation in step (a) and (b) at least 5 times.
(d) Check the DTC (See page DI-692).
OK:
DTC B1100/31 is output.
HINT:
Codes other than code B1100/31 may be output at this time, but
they are not relevant to this check.
NO Using simulation method, reproduce malfunc-
tion symptoms (See page IN-26).
YES
Replace airbag sensor assembly.

- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-805
998 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC B1135/24 Half Connection in Airbag Sensor Assembly
Connector
CIRCUIT DESCRIPTION
The airbag sensor assembly detects partial connection of connector.
For details of the function of each component, see OPERATION on page RS-3.
DTC B1135/24 is recorded when the airbag sensor assembly detects an open in the electrical connection
check mechanism of the airbag sensor connector or in the airbag sensor circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1135/24

Malfunction of electrical connection check mechanism of
airbag sensor assembly connector

Airbag sensor assembly malfunction
Electrical connection check mechanism

Airbag sensor assembly
INSPECTION PROCEDURE
1 Are connectors of airbag sensor assembly properly connected?
NO Connect connectors.
YES
2 Prepare for inspection (See step 1 on page DI-923).
DIB3S-01

H15222
ON
Airbag
Sensor
Assembly
DLC3
CGTC
DTC B1135/24
H17184
DI-806
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
999 Author
: Date
:
2004 LAND CRUISER (RM1071U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connectors to the airbag sensor assembly.
(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 B1135/24 is not output.
HINT:
Codes other than code B1135/24 may be output at this time, but
they are not relevant to this check.
OK Complete.
NG
4 Perform a visual check of the disconnection detection pin.
OK:
No deformation is identified.
HINT:
Compare it with the other 2 connector pins.
NG Repair or replace wire harness.
OK
Replace airbag sensor assembly.

H01450
S12
Side and Curtain Shield
Airbag Sensor Assembly RHAirbag Sensor Assembly
GR LG
L-Y
P SSR-
ESR
SSR+
VUPR4 3 2
1C2713
15
16
17SSR-
ESR
SSR+
VUPR C27
C27
C27 (*1)
(*1)
(*1)
(*1)
*1: w/ Side Airbag
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-807
1000 Author
: Date
:
2004 LAND CRUISER (RM1071U)
DTC B1140/32 Side and Curtain Shield Airbag Sensor
Assembly RH Malfunction
CIRCUIT DESCRIPTION
The side and curtain shield airbag sensor assembly RH consists of the safing sensor, diagnosis circuit and
lateral deceleration 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 B1140/32 is recorded when occurrence of a malfunction in the side and curtain shield airbag sensor
assembly RH is detected.
DTC No.DTC Detecting ConditionTrouble Area
B1140/32
Side and curtain shield airbag sensor assembly RH mal-
function
Side and curtain shield airbag sensor assembly RH

Floor No. 2 wire

Airbag sensor assembly
HINT:
DTC B1140/32 is indicated only for the vehicle equipped with the side airbag.
WIRING DIAGRAM
DIB3T-01

H09528AB0119H10600H11032
ON
CG
TCDTC B1140/32
DLC3
DI-808
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1001 Author
: Date
:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Is DTC B1140/32 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 B1140/32 is output.
HINT:
Codes other than code B1140/32 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 side and curtain shield airbag sensor assembly RH properly con-
nected?
NO Connect connector.
YES
3 Prepare for inspection (See step 1 on DI-923).

H01015H16862H19233H19263
Airbag
Sensor
Assembly
(-) (+) Side and Curtain
Shield Airbag
Sensor Assembly RH
Airbag Sensor
Assembly
SSR-
SSR+
SSR-
SSR+
Floor No. 2 Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-809
1002 Author
: Date
:
2004 LAND CRUISER (RM1071U)
4 Check floor No. 2 wire.
PREPARATION:
Using a service wire, connect SSR+ and SSR- of the floor No.
2 wire connector on the side and curtain shield airbag sensor
assembly RH side.
CHECK:
Measure the resistance between SSR+ and SSR- 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