DTC B1913, B1925, B1933, B1935

id080200801800

DTC

B1913

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

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
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.
•  Abnormal resistance (other than 1.4—2.9 ohms) detected in the passenger-side driver-side air bag module (inflator No.1) circuit
•  Malfunction in the wiring harness between the passenger-side air bag module (inflator No.1) and SAS control module
POSSIBLE CAUSE
•  Passenger-side air bag module (inflator No.1) connector malfunction
•  Passenger-side air bag module (inflator No.1) malfunction
•  Open circuit or short to ground in the wiring harness between the passenger-side air bag module (inflator No.1) and SAS control module
•  Open circuit or power supply short in the wiring harness between the passenger-side air bag module (inflator No.1) and SAS control module
•  SAS control module malfunction

Diagnostic procedure

Step

Inspection

Action
1
INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1) CONNECTOR
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Remove the glove compartment. (See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
•  Disconnect the passenger-side air bag module (inflator No.1) connector. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION.)
•  Inspect the passenger-side air bag module (inflator No.1) connector. (Corrosion, damage, and disconnected pins)
•  Is there any malfunction of the passenger-side air bag module (inflator No.1) connector?
Yes
Replace the passenger-side air bag module (inflator No.1) wiring harness.
No
Go to the next step.
2
INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1)
•  Connect the SST (Fuel and thermometer checker) or apply 2-ohm resistance to the passenger-side air bag module (inflator No.1) connector terminals A—B.
•  Set the SST (fuel and thermometer checker) to 2 ohm.
•  Connect the negative battery cable.
•  Perform the DTC inspection for the SAS control module using the M-MDS.
•  Are DTCs B1913, B1925, B1933 and/or B1935 displayed.
Yes
Go to the next step.
No
Replace the passenger-side air bag module.
(See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION.)
3
INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1)
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Disconnect the SST (fuel and thermometer checker) or 2 ohm resistance.
•   Disconnect all SAS control module connectors.
•  Inspect the wiring harnesses between SAS control module connector terminal 1P and passenger-side air bag module (inflator No.1) connector terminal 1A, and SAS control module connector terminal 1M and passenger-side air bag module (inflator No.1) connector terminal 1B for the following:
―  Short to body ground
―  Open circuit
Note
•  Inspect for continuity while shaking the wiring harness between the SAS control module and passenger-side air bag module.
•  Is the wiring harness normal?
Yes
Go to the next step.
No
Replace the wiring harness between the SAS control module and the passenger-side air bag module (inflator No.1).
4
INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1) FOR A SHORT CIRCUIT TO THE POWER SUPPLY
•  Connect the negative battery cable.
•  Turn the ignition switch to the ON position.
•  Measure the voltage of SAS control module connector terminals 1P and 1M.
Note
•  Measure the voltage while shaking the wiring harness between the SAS control module and passenger-side air bag module.
•  Is the voltage measured?
Yes
Replace the wiring harness between the SAS control module and the passenger-side air bag module (inflator No.1).
No
Go to the next step.
5
INSPECT DTCs
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Connect the disconnected connector.
•  Connect the negative battery cable.
•  Clear DTCs using the M-MDS.
•  Verify DTCs using the M-MDS.
•  Is DTC B1913, B1925, B1933 and/or B1935 displayed again?
•  Are there other DTCs output?
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.