Mazda 2002 6 Workshop Manual page 1121

ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
STEP
3 VERIFY WHETHER MALFUNCTION IS IN
DRIVER-SIDE SIDE AIR BAG MODULE OR
RELATED WIRING HARNESS
• Connect leads of SST (Fuel and
thermometer checker) or apply 2 ohm
resistor to driver-side side air bag module
connector terminal A and B.
• Set resistance of SST (Fuel and
thermometer checker) to 2 ohm.
• Connect negative battery cable.
• Turn ignition switch to ON position.
• Check following PID/DATA monitor, using
SST (WDS or equivalent).
(See T–195 PID/DATA MONITOR
— OD_DSAB_ST
• Is related wiring harness normal?
4 INSPECT SAS UNIT
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Connect driver-side side air bag module
connector.
• Are DTCs B1992, B1993, B1994 and/or
B1995 indicated?
End Of Sie
DTC B1996, B1997, B1998, B1999
B1996 Passenger-side side air bag module system circuit short to power supply
B1997 Passenger-side side air bag module system circuit short to ground
DTC
B1998 Passenger-side side air bag module system resistance high
B1999 Passenger-side side air bag module system resistance low
Warning
• Detection conditions are for understanding DTC outline before performing inspection.
Performing inspection with only detection conditions may cause injury due to operating error
DETECTION
or damage the system. When performing inspection, always follow inspection procedure.
CONDITION
• Abnormal resistance (other than 1.4—3.2 ohm) detected in passenger-side side air bag module circuit
• Malfunction in wiring harness between passenger-side side air bag module and SAS unit
• Open or short circuit in wiring harness between passenger-side side air bag module and SAS unit
POSSIBLE
• Passenger-side side air bag module malfunction
CAUSE
• SAS unit malfunction
INSPECTION
TABLE)
Yes Replace driver-side side air bag module.
(See T–121 SIDE AIR BAG MODULE REMOVAL/
INSTALLATION)
No Replace wiring harness, then go to next step.
Yes Present malfunction diagnosis:
• Replace SAS unit.
(See T–124 SAS UNIT
Past malfunction diagnosis:
• Troubleshooting completed.
No Troubleshooting completed.
ACTION
REMOVAL/INSTALLATION)
A6E817401046W16
T–213
T