Page 1601 of 3115
AB0119H10600H16830H17106
ON
CG
TCDTC B1148/36
DLC3
DI-820
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1013 Author: Date:
2004 LAND CRUISER (RM1071U)
INSPECTION PROCEDURE
1 Is DTC B1148/36 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 B1148/36 is output.
HINT:
Codes other than code B1148/36 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 front airbag sensor RH properly connected?
No Connect connector.
YES
3 Prepare for inspection (See step 1 on DI-923).
Page 1602 of 3115
H03356H03360H21265H21718
Airbag
Sensor
Assembly
(+)+SR Airbag Sensor
Assembly
(-)
-SR +SR-SRFront
Airbag
Sensor RH
H03361H21557H21719
Airbag
Sensor
Assembly
Airbag Sensor Assembly
(+)
-SR +SR
(-)Front
Airbag
Sensor
RH
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-821
1014 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check wire harness.
PREPARATION:
Using a service wire, connect +SR and -SR on the front airbag
sensor RH side between the front airbag sensor RH and the air-
bag sensor assembly.
CHECK:
Measure the resistance between +SR and -SR on the airbag
sensor assembly side between the front airbag sensor RH and
the airbag sensor assembly.
OK:
Resistance: Below 1 W
NG Go to step 8.
OK
5 Check wire harness (to ground).
CHECK:
Measure the resistance between the body ground and each of
+SR and -SR on the airbag sensor assembly side between the
front airbag sensor RH and the airbag sensor assembly.
OK:
Resistance: 1 MW or Higher
NG Go to step 10.
OK
Page 1603 of 3115
H03363AB0119H21557H21720
Airbag
Sensor
Assembly
Airbag Sensor Assembly
(+)
-SR+SR
(-)ONFront
Airbag
Sensor
RH
DI-822
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1015 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 +SR and -SR on the airbag sensor assembly side be-
tween the front airbag sensor RH and the airbag sensor
assembly.
OK:
Voltage: Below 1 V
NG Go to step 12.
OK
Page 1604 of 3115

AB0119H10600H16834H16835H21556H21721
Airbag
Sensor
Assembly
ON
DTC B1148/36"u "u
DLC3
TC CG
DTC B1149/37
Front
Airbag
Sensor
LH
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-823
1016 Author: Date:
2004 LAND CRUISER (RM1071U)
7 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 front airbag sensor LH position with RH posi-
tion.
(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 B1148/36 nor B1149/37 are not output.
HINT:
Codes other than code B1148/36 or B1149/37 may be output
at this time, but they are not relevant to this check.
NG Replace airbag sensor assembly
(DTC B1148/36 is output).
NG Replace front airbag sensor RH
(DTC B1149/37 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.
Page 1605 of 3115

H21555H03360H09507H21722
Engine Room
Main Wire
Front
Airbag
Sensor
RHAirbag
Sensor
Assembly u"
+SR
-SR
(+) (-) +SR
-SR
H03360H21554H16251H21723
Engine Room
Main Wire
Front
Airbag
Sensor
RHAirbag
Sensor
Assembly u"
+SR -SR
(+) (-) +SR -SR
Engine Room
No. 2 WireDash Wire
DI-824
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1017 Author: Date:
2004 LAND CRUISER (RM1071U)
8 Check engine room main wire.
PREPARATION:
(a) Disconnect the engine room main wire connector on the
airbag sensor assembly side.
(b) Using a service wire, connect +SR and -SR of the engine
room main wire connector on the front airbag sensor RH
side.
CHECK:
Measure the resistance between +SR and -SR of the engine
room main wire connector on the airbag sensor assembly side.
OK:
Resistance: Below 1 W
NG Repair or replace engine room main wire.
OK
9 Check engine room No. 2 wire.
PREPARATION:
(a) Disconnect the engine room No. 2 wire connector from
the dash wire.
(b) Using a service wire, connect +SR and -SR of the engine
room No. 2 wire connector on the engine room main wire
side.
CHECK:
Measure the resistance between +SR and -SR of the engine
room No. 2 wire connector on the dash wire side.
OK:
Resistance: Below 1 W
NG Repair or replace engine room No. 2 wire.
OK
Repair or replace dash wire.
Page 1606 of 3115

H21553H03362H21724
Engine Room
Main Wire
Front
Airbag
Sensor
RHAirbag
Sensor
Assembly u"
(+) (-)+SR -SR
H21552H16252H21725
Front
Airbag
Sensor
RHAirbag
Sensor
Assembly u"
(+) (-)+SR -SR
Engine Room
No. 2 WireDash Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-825
1018 Author: Date:
2004 LAND CRUISER (RM1071U)
10 Check engine room main wire (to ground).
PREPARATION:
Disconnect the engine room main wire connector on the airbag
sensor assembly side.
CHECK:
Measure the resistance between the body ground and each of
+SR and -SR of the engine room main wire connector on the
airbag sensor assembly side.
OK:
Resistance: 1 MW or Higher
NG Repair or replace engine room main wire.
OK
11 Check engine room No. 2 wire (to ground).
PREPARATION:
Disconnect the engine room No. 2 wire connector from the dash
wire.
CHECK:
Measure the resistance between the body ground and each of
+SR and -SR of the engine room No. 2 wire connector on the
dash wire side.
OK:
Resistance: 1 MW or Higher
NG Repair or replace engine room No. 2 wire.
OK
Repair or replace dash wire.
Page 1607 of 3115
H21553AB0119H03364H21726
Engine Room
Main Wire
Front
Airbag
Sensor
RHAirbag
Sensor
Assembly u"
(+) (-)+SR
-SR
ON
DI-826
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1019 Author: Date:
2004 LAND CRUISER (RM1071U)
12 Check engine room main wire (to B+).
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) Disconnect the engine room main wire connector on the
airbag sensor assembly side.
(d) 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 +SR and -SR of the engine room main wire connector
on the airbag sensor assembly side.
OK:
Voltage: Below 1 V
NG Repair or replace engine room main wire.
OK
Page 1608 of 3115
H21552AB0119H16253H21727
Front
Airbag
Sensor
RHAirbag
Sensor
Assembly u"
(+) (-)+SR
-SR
Engine Room
No. 2 WireDash Wire
ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-827
1020 Author: Date:
2004 LAND CRUISER (RM1071U)
13 Check engine room No. 2 wire (to B+).
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) Disconnect the engine room No. 2 wire connector from
the dash wire.
(d) 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 +SR and -SR of the engine room No. 2 wire connector
on the dash wire side.
OK:
Voltage: Below 1 V
NG Repair or replace engine room No. 2 wire.
OK
Repair or replace dash wire.