Toyota ZZT230 series, Repair Manual

Page: 626 / 821

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CIAGNOSTICS - SUPPLEMENTAL RESTRAINT SYSTEM
DTC
B01 37n1 Short in PIT Squib (LH} Circuit
(to Ground)
CIRCUIT DESCRIPTION The
PIT
squib (LH) circuit 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 80137/71 is recorded when a ground short is detected in the PIT squib (LH) circuit.
DTCNo.
DTC Detecting ConditiOn
•
Short circuit in
PfT squib (LH)
wire harness (to ground)
B0137f71
•
PIT
squib
(LH)
malfunction
•
Ai
rbag
sensor
malfunction
WIRING DIAGRAM
See page Dl-408.
INSPECTION PROCEDURE
Trouble Area
•Seat belt pretensioner (LH)
•
Airbag
sensor
assembly
•
Wire harness
1 Prepare for Inspection (See step
1
on page Dl-471 )
,
2
Check PIT squib (LH) circuit.
CHECK:
DJ-•ns
P!T
Squib (LH)
For the connector (on the seat belt pretensioner side) between
c[] I1J=(] Airbag
the seat belt pretensioner (LH) and the airbag sensor assembly,
Sensor
measure the resistance between PL+ and body ground.
�
Assembly
OK:
Resistance:
1 MQ
or Higher
Repair or replace harness or connector be-
H0\016
tween seat belt pretensloner
(LH)
and alrbag
H08:!96
sensor assembly.