DTC B1913, B1916, B1932, B1934

id080200801700

DTC

B1913

Driver-side air bag module (inflator No.1) system circuit short to ground

B1916

Driver-side air bag module (inflator No.1) system circuit short to power supply

B1932

Driver-side air bag module (inflator No.1) system resistance high

B1934

Driver-side air bag module (inflator No.1) 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 1.5-3.7 ohm) detected in driver-side air bag module (inflator No.1) circuit
• Malfunction in wiring harness between driver-side air bag module (inflator No.1) and SAS unit

POSSIBLE CAUSE

• Open or short circuit in wiring harness between clock spring and SAS unit
• Clock spring malfunction
• Driver-side air bag module (inflator No.1) malfunction
• SAS unit malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT DRIVER-SIDE AIR BAG MODULE (INFLATOR NO.1)
• Check following PID/DATA monitor, using SST (WDS or equivalent).
- DABAGR
• Is resistant value of driver-side air bag module normal?
- Resistance: 1.5-3.7 ohm
Yes
Present malfunction diagnosis:
• Replace SAS unit.
Past malfunction diagnosis:
• Troubleshooting completed.
No
Go to next step.
2
INSPECT DRIVER-SIDE AIR BAG MODULE CONNECTOR (CLOCK SPRING)
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 driver-side air bag module.
• Is there cracking or chipping in driver-side air bag module connector?
Yes
Replace wiring harness.
No
Go to next step.
3
VERIFY WHETHER MALFUNCTION IS IN DRIVER-SIDE AIR BAG MODULE (INFLATOR NO.1) OR RELATED WIRING HARNESS
• Connect leads of SST (Fuel and thermometer checker) or apply 2 ohm resistor to driver-side air bag module (inflator No.1) connector terminal 3A and 3B, and driver-side air bag module (inflator No.2) connector terminal 4A and 4B.
• 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).
- OD_DAB1_ST
• Is related wiring harness normal?
Yes
Replace driver-side air bag module.
No
Go to next step.
4
INSPECT CLOCK SPRING
• Inspect clock spring.
• Is clock spring normal?
Yes
Go to next step.
No
Replace clock spring.
5
INSPECT WIRING HARNESS BETWEEN CLOCK SPRING AND SAS UNIT
• Turn ignition switch to LOCK position.
• Disconnect negative battery cable and wait for more than 1 minute.
• Remove column cover.
• Disconnect clock spring connector.
• Remove glove compartment.
• Disconnect passenger-side air bag module connector.
• Disconnect driver and passenger-side side air bag module connectors. (Vehicle with side air bag)
• Disconnect driver and passenger-side curtain air bag module connectors. (Vehicle with curtain air bag)
• Remove B-pillar lower trim. (Vehicle with pre-tensioner seat belt)
• Disconnect driver and passenger-side pre-tensioner seat belt connectors. (Vehicle with pre-tensioner seat belt)
• Turn up floor covering.
• Disconnect all SAS unit connectors.
• Inspect following wiring harnesses between SAS unit and clock spring terminals for short to ground, short to power supply, and open circuit:
- 1S-1D
- 1V-1C
• Is wiring harness okay?
Yes
Present malfunction diagnosis:
• Replace SAS unit.
Past malfunction diagnosis:
• Troubleshooting completed.
No
Replace wiring harnesses.