TOYOTA LAND CRUISER 1998 Factory Repair Manual
Page 1571 of 3115
H21793
P21
P/T Squib LH
PL+ PL-
127
8
C25(*1)
Y-BAirbag Sensor Assembly
2
C25 Y1
C25
C25
(*2)
(*1) (*2)
*1: w/ Side Airbag
*2: w/o Side Airbag DI-790
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
983 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B0135/73 Short in P/T Squib LH Circuit
CIRCUIT DESCRIPTION
The P/T squib LH circuit consists of the airbag sensor assembly and the 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 B0135/73 is recorded when a short is detected in the P/T squib LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0135/73
Short in P/T squib LH circuit
P/T squib LH malfunction
Airbag sensor assembly malfunctionSeat belt pretensioner LH (P/T squib LH)
Airbag sensor assembly
Floor No. 1 wire
WIRING DIAGRAM
DI6PN-26
Page 1572 of 3115
H01016H02141H02211
Airbag
Sensor
Assembly
PL- PL+
(+) (-) P/T Squib LHFloor No. 1 Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-791
984 Author: Date:
2004 LAND CRUISER (RM1071U)
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:
Release the airbag activation prevention mechanism built in the
connector of the floor No. 1 wire on the airbag sensor assembly
side (See page DI-692).
CHECK:
Measure the resistance between PL+ and PL- of the floor No.
1 wire connector on the seat belt pretensioner LH (P/T squib
LH) side.
OK:
Resistance: 1 MW or Higher
NG Repair or replace floor No. 1 wire.
OK
Page 1573 of 3115
H01017AB0119H01086
H10600H10627
Airbag
Sensor
Assembly
DTC B0135/73
ON" u
DLC3
TC CG
P/T Squib LH
DI-792
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
985 Author: Date:
2004 LAND CRUISER (RM1071U)
3 Check airbag sensor assembly.
PREPARATION:
(a) Connect the connector 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 B0135/73 is not output.
HINT:
Codes other than code B0135/73 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1574 of 3115
H01018AB0119H01086
H10600H10628
"u
ONAirbag
Sensor
Assembly
DTC B0135/73
DLC3
TC CG
P/T Squib LH
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-793
986 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 B0135/73 is not output.
HINT:
Codes other than code B0135/73 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.
Page 1575 of 3115
H01016H02141H02213
Airbag
Sensor
Assembly
PL+ PL-
(+)(-) P/T Squib LHFloor No. 1 Wire
DI-794
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
987 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B0136/74 Open in P/T Squib LH Circuit
CIRCUIT DESCRIPTION
The P/T squib LH circuit consists of the airbag sensor assembly and the 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 B0136/74 is recorded when an open is detected in the P/T squib LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0136/74
Open in P/T squib LH circuit
P/T squib LH malfunction
Airbag sensor assembly malfunctionSeat 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).
CHECK:
Measure the resistance between PL+ and PL- of the floor No.
1 wire connector on the seat belt pretensioner LH (P/T squib
LH) side.
OK:
Resistance: Below 1 W
NG Repair or replace floor No. 1 wire.
OK
DI6PO-16
Page 1576 of 3115
H01017H02139AB0119H01087 H10600H10629
Airbag
Sensor
Assembly
PL+
PL-
DTC B0136/74
ON
DLC3
TC CG
P/T Squib LHFloor No. 1 Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-795
988 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 B0136/74 is not output.
HINT:
Codes other than code B0136/74 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1577 of 3115
AB0119H01018
H01087 H10600H10630
"u
ONAirbag
Sensor
Assembly
DTC B0136/74 DLC3
TC
CG
P/T Squib LHFloor No. 1 Wire
DI-796
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
989 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 B0136/74 is not output.
HINT:
Codes other than code B0136/74 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.
Page 1578 of 3115
H01016H08392H08396
Airbag
Sensor
Assembly
PL+
(+) (-) P/T Squib LHFloor No. 1 Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-797
990 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B0137/71 Short in P/T Squib LH Circuit
(to Ground)
CIRCUIT DESCRIPTION
The P/T squib LH circuit consists of the airbag sensor assembly and the 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 B0137/71 is recorded when a ground short is detected in the P/T squib LH circuit.
DTC No.DTC Detecting ConditionTrouble Area
B0137/71
Short in P/T squib LH circuit (to ground)
P/T squib LH malfunction
Airbag sensor assembly malfunctionSeat 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).
CHECK:
Measure the resistance between the body ground and PL+ of
the floor No. 1 wire connector on the seat belt pretensioner LH
(P/T squib LH) side.
OK:
Resistance: 1 MW or Higher
NG Repair or replace floor No. 1 wire.
OK
DI6PP-16
Page 1579 of 3115
H01017H02139AB0119H01084 H10600H10631
Airbag
Sensor
Assembly
PL+
PL-
DTC B0137/71ON " u
DLC3
TC CG
P/T Squib LHFloor No. 1 Wire
DI-798
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
991 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 B0137/71 is not output.
HINT:
Codes other than code B0137/71 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1580 of 3115
H01018
AB0118AB0119H01084 H10600H10632
"u
ONAirbag
Sensor
Assembly
DTC B0137/71 DLC3
TC CG
P/T Squib LH
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-799
992 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 B0137/71 is not output.
HINT:
Codes other than code B0137/71 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.