Page 1705 of 2000

RS–56SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
B1622/81 Lost Communication with
Driver Side - Side Airbag
Sensor Assembly-ONRS-87
B1623/81 Driver Side - Side Airbag
Sensor Assembly
Initialization Incomplete-ONRS-92
B1625/22 Front Passenger Side -
Side Airbag Sensor Circuit
Malfunction-ONRS-100
B1627/82 Lost Communication with
Front Passenger Side -
Side Airbag Sensor
Assembly-ONRS-102
B1628/82 Front Passenger Side -
Side Airbag Sensor
Assembly Initialization
Incomplete-ONRS-107
B1630/23 Driver Side Rear Airbag
Sensor Circuit Malfunction-ONRS-115
B1632/81 Lost Communication with
Driver Side Curtain Shield
Airbag Sensor-ONRS-92
B1633/81 Driver Side Curtain Shield
Airbag Sensor Initialization
Incomplete-ONRS-92
B1635/24 Front Passenger Side
Rear Airbag Sensor
Circuit Malfunction-ONRS-117
B1637/82 Lost Communication with
Front Passenger Side
Curtain Shield Airbag
Sensor-ONRS-107
B1638/82 Front Passenger Side
Curtain Shield Airbag
Sensor Initialization
Incomplete-ONRS-107
B1642/81 Lost Communication with
Driver Side Satellite
Sensor Bus-ONRS-92
B1643/81 Driver Side Satellite
Sensor Bus Initialization
Incomplete-ONRS-119
B1647/82 Lost Communication with
Front Passenger Side
Satellite Sensor Bus-ONRS-107
B1648/82 Front Passenger Side
Satellite Sensor Bus
Initialization Incomplete-ONRS-127
B1650/32 Occupant Classification
System Malfunction-ONRS-135
B1653/35 Seat Position Airbag
Sensor Circuit Malfunction-ONRS-141
B1655/37 Driver Side Seat Belt
Buckle Switch Circuit
Malfunction-ONRS-153
B1660/43 Passenger Airbag ON /
OFF Indicator Circuit
Malfunction-ONRS-161
B1800/51 Short in Driver Side Squib
Circuit
ONRS-176 DTC No. Detection Item Check Mode SRS Warning Light See Page
Page 1706 of 2000

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–57
RS
B1801/51 Open in Driver Side Squib
CircuitONRS-176
B1802/51 Short to GND in Driver
Side Squib Circuit
ONRS-176
B1803/51 Short to B+ in Driver Side
Squib Circuit
ONRS-176
B1805/52 Short in Front Passenger
Side Squib Circuit
ONRS-181
B1806/52 Open in Front Passenger
Side Squib Circuit
ONRS-181
B1807/52 Short to GND in Front
Passenger Side Squib
Circuit
ONRS-181
B1808/52 Short to B+ in Front
Passenger Side Squib
Circuit
ONRS-181
B1810/53 Short in Driver Side Squib
2nd Step Circuit
ONRS-186
B1811/53 Open in Driver Side Squib
2nd Step Circuit
ONRS-186
B1812/53 Short to GND in Driver
Side Squib 2nd Step
Circuit
ONRS-186
B1813/53 Short to B+ in Driver Side
Squib 2nd Step Circuit
ONRS-186
B1815/54 Short in Front Passenger
Side Squib 2nd Step
Circuit
ONRS-191
B1816/54 Open in Front Passenger
Side Squib 2nd Step
Circuit
ONRS-191
B1817/54 Short to GND in Front
Passenger Side Squib 2nd
Step Circuit
ONRS-191
B1818/54 Short to B+ in Front
Passenger Side Squib 2nd
Step Circuit
ONRS-191
B1820/55 Short in Driver Side - Side
Squib Circuit
ONRS-196
B1821/55 Open in Driver Side - Side
Squib Circuit
ONRS-196
B1822/55 Short to GND in Driver
Side - Side Squib Circuit
ONRS-196
B1823/55 Short to B+ in Driver Side -
Side Squib Circuit
ONRS-196
B1825/56 Short in Front Passenger
Side - Side Squib Circuit
ONRS-201
B1826/56 Open in Front Passenger
Side - Side Squib Circuit
ONRS-201
B1827/56 Short to GND in Front
Passenger Side - Side
Squib Circuit
ONRS-201
B1828/56 Short to B+ in Front
Passenger Side - Side
Squib Circuit
ONRS-201
B1830/57 Short in Driver Side
Curtain Shield Squib
Circuit
ONRS-206 DTC No. Detection Item Check Mode SRS Warning Light See Page
Page 1707 of 2000

RS–58SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
B1831/57 Open in Driver Side
Curtain Shield Squib
CircuitONRS-206
B1832/57 Short to GND in Driver
Side Curtain Shield Squib
Circuit
ONRS-206
B1833/57 Short to B+ in Driver Side
Curtain Shield Squib
Circuit
ONRS-206
B1835/58 Short in Front Passenger
Side Curtain Shield Squib
Circuit
ONRS-210
B1836/58 Open in Front Passenger
Side Curtain Shield Squib
Circuit
ONRS-210
B1837/58 Short to GND in Front
Passenger Side Curtain
Shield Squib Circuit
ONRS-210
B1838/58 Short to B+ in Front
Passenger Side Curtain
Shield Squib Circuit
ONRS-210
B1900/73 Short in Driver Side Front
Pretensioner Squib Circuit
ONRS-215
B1901/73 Open in Driver Side Front
Pretensioner Squib Circuit
ONRS-215
B1902/73 Short to GND in Driver
Side Front Pretensioner
Squib Circuit
ONRS-215
B1903/73 Short to B+ in Driver Side
Front Pretensioner Squib
Circuit
ONRS-215
B1905/74 Short in Front Passenger
Side Front Pretensioner
Squib Circuit
ONRS-219
B1906/74 Open in Front Passenger
Side Front Pretensioner
Squib Circuit
ONRS-219
B1907/74 Short to GND in Front
Passenger Side Front
Pretensioner Squib Circuit
ONRS-219
B1908/74 Short to B+ in Front
Passenger Side Front
Pretensioner Squib Circuit
ONRS-219 DTC No. Detection Item Check Mode SRS Warning Light See Page
Page 1708 of 2000

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–59
RS
DESCRIPTION
The center airbag sensor consists of the airbag sensor, the safing sensor, the drive circuit, the diagnosis
circuit and the ignition control.
If the center airbag sensor receives signals from the airbag sensor, it determines whether or not the SRS
should be activated.
DTC B1000/31 is recorded when a malfunction is detected in the center airbag sensor.
HINT:
When a malfunction code is displayed simultaneously with DTC B1000/31, repair the malfunction
indicated by this code (except DTC B1000/31) first.
INSPECTION PROCEDURE
(a) Turn the ignition switch OFF.
(b) Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
(c) Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
(d) Turn the ignition switch ON, and wait for at least 60
seconds.
(e) Clear the DTCs (see page RS-49).
(f) Turn the ignition switch OFF.
(g) Turn the ignition switch ON, and wait for at least 60
seconds.
(h) Check the DTCs (see page RS-49).
OK:
DTC B1000/31 is not output.
NG
OK
DTC B1000/31 Center Airbag Sensor Assembly Malfunction
DTC No. DTC Detection Condition Trouble Area
B1000/31 Center airbag sensor malfunction Center airbag sensor assembly
1CHECK CENTER AIRBAG SENSOR ASSEMBLY
H041086E03
REPLACE CENTER AIRBAG SENSOR
ASSEMBLY
USE SIMULATION METHOD TO CHECK
Page 1709 of 2000

RS–60SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
DESCRIPTION
The front airbag sensor RH consists of the diagnostic circuit and the frontal deceleration sensor.
If the center airbag sensor receives signals from the frontal deceleration sensor, it determines whether or
not the SRS should be activated.
DTC B1602/83, B1603/83, B1612/83 or B1613/83 is recorded when a malfunction is detected in the front
airbag sensor RH circuit.
DTC B1602/83Lost Communication with Front Satellite Sen-
sor Bus RH
DTC B1603/83Front Satellite Sensor Bus RH Initialization
Incomplete
DTC B1612/83Lost Communication with Front Airbag Sensor
RH
DTC B1613/83Front Airbag Sensor RH Initialization Incom-
plete
DTC No. DTC Detection Condition Trouble Area
B1602/83
B1603/83
B1612/83
B1613/83When one of following conditions is met:
• Center airbag sensor detects line short
signal, open signal, short to ground signal
or short to B+ signal in the front airbag
sensor RH circuit for 2 seconds.
• Front airbag sensor RH malfunction
• Center airbag sensor malfunction• Instrument panel wire
• Engine room main wire
• Front airbag sensor RH
• Center airbag sensor
Page 1710 of 2000
SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–61
RS
WIRING DIAGRAM
INSPECTION PROCEDURE
(a) Turn the ignition switch OFF.
(b) Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
(c) Check that the connectors are properly connected to the
center airbag sensor and the front airbag sensor RH.
OK:
The connectors are connected.
NG
1CHECK CONNECTION OF CONNECTOR
C123527E01
CONNECT CONNECTOR
Page 1711 of 2000
RS–62SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
OK
(a) Disconnect the connectors from the center airbag sensor
and the front airbag sensor RH.
(b) Using a service wire, connect A29-2 (+SR) and A29-1 (-
SR) of connector E.
NOTICE:
Do not forcibly insert a service wire into the
terminals of the connector when connecting.
(c) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
2CHECK FRONT AIRBAG SENSOR RH CIRCUIT (OPEN)
C128662E01
Tester Connection Specified Condition
E45-29 (+SR) - E45-27 (-SR) Below 1
Go to step 7
Page 1712 of 2000
SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–63
RS
(a) Disconnect the service wire from connector E.
(b) Measure the resistance of the wire harness side
connector.
Standard resistance
NG
OK
3CHECK FRONT AIRBAG SENSOR RH CIRCUIT (SHORT)
C128663E01
Tester Connection Specified Condition
E45-29 (+SR) - E45-27 (-SR) 1 M
or higher
Go to step 8