1986 TOYOTA LAND CRUISER ignition

AB0119H16851
H21760
H21232
D2+
(-) (+) ON Column Wire
Dash
Wire
Airbag
Sensor
AssemblySpiral
Cable D Squib
(2nd step)
DI-902
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1095 Author
: Date
:
2004 LAND CRUISER (RM1071U)
7 Check dash wire.
CHECK:
(a) Turn the ignition switch to ON.
(b) Measure the voltage between the body ground and D2+
of the dash wire connector on the column wire side.
OK:
Voltage: Below 1 V
NG Repair or replace dash wire.
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.

H01023AB0119
H10600H16840H17145
P Squib
(2nd step)
Airbag
Sensor
Assembly
DTC B1185/57
DLC3
ON" u
TC CG
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-905
1098 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 B1185/57 is not output.
HINT:
Codes other than code B1185/57 may be output at this time, but
they are not relevant to this check.
NG Replace airbag sensor assembly.
OK

H01024AB0119
H10600H16840H17146
"u
ON
DTC B1185/57 DLC3Airbag
Sensor
Assembly P Squib
(2nd step)
TC CG
DI-906
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
1099 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)) 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 B1185/57 is not output.
HINT:
Codes other than code B1185/57 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.

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

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.

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

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.

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 malfunction
Front 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