DTC B1916, B1932, B1934, B1936

id0802a0810200

DTC

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 circuit resistance high

B1934

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

B1936

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

DETECTION CONDITION

Warning
• Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection with only detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
• Abnormal resistance (other than 2.2-3.7 ohms) detected in the driver-side air bag module (inflator No.1) circuit
• Malfunction in the wiring harness between the driver-side air bag module (inflator No.1) and SAS control module

POSSIBLE CAUSE

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

Diagnostic procedure

Step

Inspection

Action

1
INSPECT DRIVER-SIDE AIR BAG MODULE CONNECTOR (CLOCK SPRING)
Warning
• Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner seat belts, which may seriously injure you. Read the service warnings before handling the air bag system components.
(See SERVICE WARNINGS.)
(See SERVICE CAUTIONS.)
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the driver-side air bag module.
• Is there cracking or chipping in the driver-side air bag module connector?
Yes
Replace the air bag wiring harness.
No
Go to the next step.
2
VERIFY WHETHER MALFUNCTION IS IN DRIVER-SIDE AIR BAG MODULE (INFLATOR NO.1) OR RELATED WIRING HARNESS
• Connect the leads of the SST (Fuel and thermometer checker) or apply 2-ohm resistance to driver-side air bag module (inflator No.1) connector terminals 1A and 1B, and driver-side air bag module (inflator No.2) connector terminals 1C and 1D.
• Set resistance of the SST (Fuel and thermometer checker) to the 2-ohm position.
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Using the WDS or equivalent, check the following PID/DATA monitor:
- OD_DAB1_ST
• Is the related wiring harness normal?
Yes
Replace the driver-side air bag module.
No
Go to the next step.
3
INSPECT CLOCK SPRING
• Inspect the clock spring.
• Is the clock spring normal?
Yes
Go to the next step.
No
Replace the clock spring.
4
INSPECT WIRING HARNESS BETWEEN CLOCK SPRING AND SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Disconnect the clock spring connector.
• Remove the passenger-side air bag module.
• Remove the driver and passenger-side B-pillar lower trim. (Vehicles with the pre-tensioner seat belt)
• Disconnect the driver and passenger-side pre-tensioner seat belt connectors. (Vehicles with the pre-tensioner seat belt)
• Remove the console.
• Disconnect the SAS control module connector.
• Inspect the wiring harness between SAS control module terminal 2N and clock spring terminal 3J, SAS control module terminal 2J and clock spring terminal 3L for the following.
- Short to ground
- Short to power supply
- Open circuit
• Is the wiring harness normal?
Yes
[Present malfunction diagnosis]
Replace the SAS control module.
[Past malfunction diagnosis]
Troubleshooting completed.
No
Replace the air bag wiring harness.