TROUBLESHOOTING
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-243
Code No.B1610: Seat belt pre-tensioner (passenger's side) (squib) system (open-circuited in the
squib circuit)
AC806069
CONNECTOR
LOCK SWITCH
CONNECTOR
LOCK SWITCH
NOTE
: CONNECTOR COUPLED: ON
CONNECTOR UNCOUPLED: OFF
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple
AB
SEAT BELT
PRE-TENSIONER
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Seat Belt Pre-tensioner (Passenger's Side) (Squib)
SRS-ECU
OPERATION
The SRS-ECU judges how severe a collision is by
detecting signals from the front impact sensors and
the front air bag analogue G-sensor. If the impact is
over a predetermined level, the SRS-ECU sends an
ignition signal. At this time, if the front air bag safing
G-sensor is on, the seat belt pre-tensioner will
deploy.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set if the seat belt pre-ten-
sioner (passenger's side) squib wire(s) are open-
circuited.
PROBABLE CAUSES
• Open circuit in the seat belt pre-tensioner (pas-
senger's side) (squib) circuit
• Improper connector contact
• Malfunction of the SRS-ECU