DTC B1048, B1925, B1933, B1935, B1938 [TWO-STEP DEPLOYMENT CONTROL SYSTEM]

id0802b2810600

DTC

B1048

Passenger-side air bag module (inflator No.1) and other air bag module circuits short

B1925

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

B1933

Passenger-side air bag module (inflator No.1) circuit resistance high

B1935

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

B1938

Passenger-side air bag module (inflator No.1) circuit short to body ground

DETECTION CONDITION

Warning
• Detection conditions are for understanding the DTC outline before performing an inspection. Performing an inspection according to only the detection conditions may cause injury due to an operating error, or damage the system. When performing an inspection, always follow the inspection procedure.
• Resistance other than 1.4-2.9 ohms detected in passenger-side air bag module (inflator No.1) circuit
• Malfunction in wiring harness between passenger-side air bag module (inflator No.1) and SAS control module

POSSIBLE CAUSE

• Open or short circuit in wiring harness between passenger-side air bag module (inflator No.1) and SAS control module
• Passenger-side air bag module (inflator No.1) malfunction
• SAS control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1)
• Using the WDS or equivalent, verify the following PID/DATA monitor.
- PABAGR
• Is the resistance of the passenger-side air bag module normal?
- Resistance: 1.4-2.9 ohms
Yes
Replace the SAS control module.
No
Go to the next step.
2
INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1) CONNECTOR
Warning
• Handling the air bag system components improperly can accidentally deploy the air bag modules and pre-tensioner front buckles, which may seriously injure you. Read the service warnings and cautions 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 glove compartment.
• Disconnect the passenger-side air bag module connector.
• Is there any malfunction of the passenger-side air bag module connector?
Yes
Replace the air bag wiring harness.
No
Go to the next step.
3
VERIFY WHETHER MALFUNCTION IS IN PASSENGER-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 passenger-side air bag module (inflator No.1) connector terminals 1A and 1B, and passenger-side air bag module (inflator No.2) connector terminals 2A and 2B.
• Set the 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.
• Are DTCs B1048, B1925, B1933, B1935 and/or B1938 indicated?
Yes
Replace the air bag wiring harness, then go to the next step.
No
Replace the passenger-side air bag module.
4
INSPECT SAS CONTROL MODULE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Connect the passenger-side air bag module connector.
• Are DTCs B1048, B1925, B1933, B1935 and/or B1938 indicated?
Yes
Replace the SAS control module.
No
DTC troubleshooting completed.