DTC B1996, B1997, B1998, B1999

id080200802000

DTC

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

B1998

Passenger-side side air bag module system resistance high

B1999

Passenger-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 passenger-side side air bag module circuit
• Malfunction in wiring harness between passenger-side side air bag module and SAS unit

POSSIBLE CAUSE

• Open or short circuit in wiring harness between passenger-side side air bag module and SAS unit
• Passenger-side side air bag module malfunction
• SAS unit malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT PASSENGER-SIDE SIDE AIR BAG MODULE
• Check following PID/DATA monitor, using SST (WDS or equivalent).
- PS_AB
• Is resistant value of passenger-side side air bag module normal?
- Resistance: 1.4-3.2 ohm
Yes
Present malfunction diagnosis:
• Replace SAS unit.
Past malfunction diagnosis:
• Troubleshooting completed.
No
Go to next step.
2
INSPECT PASSENGER-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 SERVICE WARNINGS)
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait for more than 1 minute.
• Remove passenger-side side air bag module.
• Is there cracking or chipping in passenger-side side air bag module connector?
Yes
Replace wiring harness.
No
Go to next step.
3
VERIFY WHETHER MALFUNCTION IS IN PASSENGER-SIDE SIDE AIR BAG MODULE OR RELATED WIRING HARNESS
• Connect leads of SST (Fuel and thermometer checker) or apply 2 ohm resistor to passenger-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).
- DSB_P_ST
• Is related wiring harness normal?
Yes
Replace passenger-side side air bag module.
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 passenger-side side air bag module connector.
• Are DTCs B1996, B1997, B1998 and/or B1999 indicated?
Yes
Present malfunction diagnosis:
• Replace SAS unit.
Past malfunction diagnosis:
• Troubleshooting completed.
No
Troubleshooting completed.