Page 1689 of 3115

H01023AB0119
H10600H16853H16841H17148
Airbag
Sensor
Assembly
P2+
P2-
DTC B1186/58 DLC3
ON " u
TC CG
P Squib
(2nd step)Dash Wire
DI-908
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1101 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 P2+ and P2- of the dash
wire connector on the front passenger airbag assembly (P
squib (2nd step)) 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 B1186/58 is not output.
HINT:
Codes other than code B1186/58 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1690 of 3115

H01024AB0119
H10600H16841H17149
"u
ON
DTC B1186/58 DLC3Airbag
Sensor
Assembly
TC CG
P Squib
(2nd step)Dash Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-909
1102 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check P squib (2nd step).
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 front passenger airbag assembly (P squib
(2nd step)) to 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, 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 B1186/58 is not output.
HINT:
Codes other than code B1186/58 may be output at this time, but
they are not relevant to this check.
NG Replace front passenger airbag assembly
(P squib (2nd 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 1691 of 3115

H01227H16850H17150
P Squib
(2nd step)
Airbag
Sensor
Assembly
(+) (-)P2+
Dash Wire
DI-910
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1103 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B1187/55 Short in P Squib (2nd step) Circuit
(to Ground)
CIRCUIT DESCRIPTION
The P squib (2nd step) circuit consists of the airbag sensor assembly and the front passenger airbag assem-
bly.
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 B1187/55 is recorded when ground short is detected in the P squib (2nd step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1187/55
Short in P squib (2nd step) circuit (to ground)
P squib (2nd step) malfunction
Airbag sensor assembly malfunctionFront passenger airbag assembly (P squib (2nd step))
Airbag sensor assembly
Dash wire
WIRING DIAGRAM
See page DI-903.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-923).
2 Check dash wire(P squib (2nd step) circuit).
CHECK:
Measure the resistance between the body ground and P2+ of
the dash wire connector on the front passenger airbag assem-
bly (P squib (2nd step)) side.
OK:
Resistance: 1 MW or Higher
NG Repair or replace dash wire.
OK
DI8F2-06
Page 1692 of 3115

H16853H16838AB0118H01023
H10600
H17151
Airbag
Sensor
Assembly
P2+
P2-
DLC3
ON " u
DTC B1187/55
TC CG
P Squib
(2nd step)Dash Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-91 1
1104 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 P2+ and P2- of the dash
wire connector on the front passenger airbag assembly (P
squib (2nd step)) 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 B1187/55 is not output.
HINT:
Codes other than code B1187/55 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1693 of 3115

AB0119H01024
H10600
H16838H17152
"u
ON
DTC B1187/55
DLC3Airbag
Sensor
Assembly
TC CG
P Squib
(2nd step)Dash Wire
DI-912
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1105 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check P squib (2nd step).
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 front passenger airbag assembly (P squib
(2nd step)) to 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, 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 B1187/55 is not output.
HINT:
Codes other than code B1187/55 may be output at this time, but
they are not relevant to this check.
NG Replace front passenger airbag assembly
(P squib (2nd 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.
Page 1694 of 3115

H01022AB0119H16851H17154
P Squib
(2nd step)Airbag
Sensor
Assembly
(-)(+)P2+
ONDash Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-913
1106 Author: Date:
2004 LAND CRUISER (RM1071U)
DTC B1188/56 Short in P Squib (2nd step) Circuit
(to B+)
CIRCUIT DESCRIPTION
The P squib (2nd step) circuit consists of the airbag sensor assembly and the front passenger airbag assem-
bly.
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 B1188/56 is recorded when a B+ short is detected in the P squib (2nd step) circuit.
DTC No.DTC Detecting ConditionTrouble Area
B1188/56
Short in P squib (2nd step) circuit (to B+)
P squib (2nd step) malfunction
Airbag sensor assembly malfunctionFront passenger airbag assembly (P squib (2nd step))
Airbag sensor assembly
Dash wire
WIRING DIAGRAM
See page DI-903.
INSPECTION PROCEDURE
1 Prepare for inspection (See step 1 on page DI-923).
2 Check dash wire (P squib (2nd step) 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 P2+
of the dash wire connector on the front passenger airbag
assembly (P squib (2nd step)) side.
OK:
Voltage: Below 1 V
NG Repair or replace dash wire.
OK
DI8F3-06
Page 1695 of 3115

AB0118H01023
H10600H16853H16839H17155
Airbag
Sensor
Assembly
P2+
P2-
DTC B1188/56
DLC3
ON " u
TC CG
P Squib
(2nd step)Dash Wire
DI-914
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1107 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 P2+ and P2- of the dash
wire connector on the front passenger airbag assembly (P
squib (2nd step)) 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 B1188/56 is not output.
HINT:
Codes other than code B1188/56 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK
Page 1696 of 3115

AB0119H01024
H10600
H16839H17156
"u
ON
DTC B1188/56
DLC3Airbag
Sensor
Assembly
TC CG
P Squib
(2nd step)Dash Wire
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-915
1108 Author: Date:
2004 LAND CRUISER (RM1071U)
4 Check P squib (2nd step).
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 front passenger airbag assembly (P squib
(2nd step)) to 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, 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 B1188/56 is not output.
HINT:
Codes other than code B1188/56 may be output at this time, but
they are not relevant to this check.
NG Replace front passenger airbag assembly
(P squib (2nd 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. If the malfunctioning part can not be
detected by the simulation method, replace all SRS components including the wire harness.