SRS AIR BAG DIAGNOSIS
TSB Revision
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
52B-310
DTC B1530: Seat belt switch (RH) malfunction DTC B1531: Seat belt switch (RH) circuit open (for
Normal/Close terminal) DTC B1532: Seat belt switch (RH) circuit (ground side) shorted (for
Normal/Close terminal) DTC B1533: Seat belt switch (RH) circuit (power supply side) shorted (for
Normal/Close terminal) DTC B1534: Seat belt switch (RH) circuit open (for Normal/Open terminal) DTC
B1535: Seat belt switch (RH) circuit (ground side) shorted (for Normal/Open terminal) DTC B1536:
Seat belt switch (RH) circuit (power supply side) shorted (for Normal/Open terminal) DTC B1537: Seat
belt switch (RH) circuit open (for COM terminal) DTC B1538: Seat belt switch (RH) circuit (ground
side) shorted (for COM terminal) DTC B1539: Seat belt switch (RH) circuit (power supply side) shorted
(for COM terminal)
CAUTION
If DTC B1530, B1531, B1532, B1533, B1534,
B1535, B1536, B1537, B1538 or B1539 are set in
the combination meter, always diagnose the CAN
bus lines.
.
CIRCUIT OPERATION
The SRS-ECU determines whether the seat belt is
fastened or not according to the connection location
of the seat belt switch in the seat buckle.
.
Driver's Seat Belt Switch Circuit
SEAT BELT
SWITCH (DRIVER'S SIDE)
DETECTION CIRCUIT
SEAT BELT SWITCH
(DRIVER'S SIDE)
SRS-ECU
AC305362
CONNECTOR: C-120
C-120 (Y)
AC
SRS-ECU
AC305264
AR
CONNECTOR: D-29