H01016
H02141
H02213
P/T Squib (LH)
Airbag
Sensor
Assembly
PL+
PL–
(+)
(–)
DI–650
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
912
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
DTC
B0136/74
Open in P/T Squib (LH) Circuit
CIRCUIT DESCRIPTION
The P/T squib circuit (LH) 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–2.
DTC B0136/74 is recorded when an open is detected in the P/T squib (LH) circuit.
DTC No.
DTC Detecting Condition
Trouble Area
B0136/74
Open circuit in PL+ wire harness or PL– wire harness of
squib
P/T squib (LH) malfunction
Airbag sensor assembly malfunction
Seat belt pretensioner (LH)
Airbag sensor assembly
Wire harness
WIRING DIAGRAM
See page DI–646.
INSPECTION PROCEDURE
1
Prepare for inspection. (See step 1 on page DI–675)
2
Check P/T squib (LH) circuit.
CHECK:
For the connector (on the seat belt pretensioner side) between
the seat belt pretensioner (LH) and the airbag sensor assembly,
measure the resistance between PL+ and PL–.
OK:
Resistance: Below 1 Ω
NG
Repair or replace harness or connector be-
tween seat belt pretensioner (LH) and airbag
sensor assembly.
OK
DI55I–02
H01017
H02139 AB0119
H01087
H10600
H10629
P/T Squib (LH)
Airbag
Sensor
Assembly
PL+
PL–
DTC B0136/74
ON
CG
Tc
DLC3
–
DIAGNOSTICS
SUPPLEMENTAL RESTRAINT SYSTEM
DI–651
913
Author:
Date:
2003 TOYOTA TACOMA (RM1002U)
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 connec-
tor (on the seat belt pretensioner side) between the seat
belt pretensioner (LH) and the airbag sensor assembly.
(c)
Connect negative (–) terminal cable to the battery, and
wait at least for 2 seconds.
CHECK:
(a)
Turn ignition switch to ON and wait at least for 20 se-
conds.
(b)
Clear DTC stored in memory.
(See page DI–588)
(c)
Turn ignition switch to LOCK, and wait at least for 2