T–212
ON-BOARD DIAGNOSTIC [AIR BAG SYSTEM]
DTC B1992, B1993, B1994, B1995
A6E817401046W15
Diagnostic procedure
DTC
B1992 Driver-side side air bag module system circuit short to power supply
B1993 Driver-side side air bag module system circuit short to ground
B1994 Driver-side side air bag module system resistance high
B1995 Driver-side side air bag module 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 1.4—3.2 ohm) detected in driver-side side air bag module circuit
• Malfunction in wiring harness between driver-side side air bag module and SAS unit
POSSIBLE
CAUSE
• Open or short circuit in wiring harness between driver-side side air bag module and SAS unit
• Driver-side side air bag module malfunction
• SAS unit malfunction
STEP INSPECTION ACTION
1 INSPECT DRIVER-SIDE SIDE AIR BAG
MODULE
• Check following PID/DATA monitor, using
SST (WDS or equivalent).
(See T–195 PID/DATA MONITOR TABLE)
— DS_AB
• Is resistant value of driver-side side air bag
module normal?
— Resistance: 1.4—3.2 ohm
Yes
Present malfunction diagnosis:
• Replace SAS unit.
(See T–124 SAS UNIT REMOVAL/INSTALLATION)
Past malfunction diagnosis:
• Troubleshooting completed.
No Go to next step.
2 INSPECT DRIVER-SIDE SIDE AIR BAG
MODULE CONNECTOR
Warning
• Handling air bag system components
improperly can accidentally deploy air
bag modules and pre-tensioner seat
belts, which may seriously injure you.
Read AIR BAG SYSTEM SERVICE
WARNINGS before handling air bag
system components.
(See T–117 SERVICE WARNINGS)
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait
for more than 1 minute.
• Remove driver-side side air bag module.
• Is there cracking or chipping in driver-side
side air bag module connector?
Yes Replace wiring harness.
No Go to next step.
To Next Page
Loading...
