Mazda 6 2002, Workshop Manual

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ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
T–203
T
End Of Sie
DTC B1881, B1882, B1883, B1886
A6E817401046W10
3 VERIFY WHETHER MALFUNCTION IS IN
DRIVER-SIDE PRE-TENSIONER SEAT BELT
OR RELATED WIRING HARNESS
•
Connect leads of SST (Fuel and
thermometer checker) or apply 2 ohm
resistor to driver-side pre-tensioner seat belt
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 TABLE )
— DSB_P_ST
•
Is related wiring harness normal?
Yes Replace driver-side pre-tensioner seat belt.
(See
S–100 FRONT SEAT BELT REMOVAL/
INSTALLATION )
No Replace wiring harness, then go to next step.
4 INSPECT SAS UNIT
•
Turn ignition switch to LOCK position.
•
Disconnect negative battery cable and wait
for
more than 1 minute .
•
Connect driver-side pre-tensioner seat belt
connector.
•
Are DTCs B1877, B1878, B1879 and/or
B1885 indicated?
Yes Present malfunction diagnosis:
•
Replace SAS unit.
(See
T–124 SAS UNIT REMOVAL/INSTALLATION )
Past malfunction diagnosis:
•
Troubleshooting completed.
No Troubleshooting completed.
STEP INSPECTION ACTION
DTC
B1881 Passenger-side pre-tensioner seat belt system resistance high
B1882 Passenger-side pre-tensioner seat belt system circuit short to power supply
B1883 Passenger-side pre-tensioner seat belt system circuit short to ground
B1886 Passenger-side pre-tensioner seat belt system resistance low
DETECTION
CONDITION
Warning
•
Detection conditions are for understanding DTC outline before performing inspection.
Performing inspection with only detection conditions may cause injury due to operating error
or damage the system. When performing inspection, always follow inspection procedure.
•
Abnormal resistance (other than 1.5—3.1 ohm ) detected in passenger-side pre-tensioner seat belt
circuit
•
Malfunction in wiring harness between passenger-side pre-tensioner seat belt and SAS unit
POSSIBLE
CAUSE
•
Open or short circuit in wiring harness between passenger-side pre-tensioner seat belt and SAS unit
•
Passenger-side pre-tensioner seat belt malfunction
•
SAS unit malfunction