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

Diagnostic Procedure

Step

Inspection

Action
1
INSPECT PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1) CONNECTOR
Warning
•  Handling the component parts improperly can accidentally operate (deploy) the air bag module, which may seriously injure you. Read the service warnings/cautions and the workshop manual before handling the air bag system components.
•  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 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 wiring harness.
No
Go to the next step.
2
INSPECT WIRING HARNESS BETWEEN SAS UNIT AND PASSENGER-SIDE AIR BAG MODULE (INFLATOR NO.1)
•  Remove the column cover.
•  Disconnect the clock spring connector.
•  Disconnect the driver and passenger-side curtain air bag module connectors.
•  Disconnect the driver and passenger-side side air bag module connectors.
•  Remove the rear door lower trim.
•  Disconnect the driver and passenger-side pre-tensioner seat belt connectors.
•  Partially peel back the floor covering.
•  Disconnect the SAS unit connector.
•  Inspect the wiring harnesses between SAS unit connector terminal 1P and passenger-side air bag module connector (inflator No.1) terminal C, and SAS unit connector terminal 1M and passenger-side air bag module (inflator No.1) connector terminal D for the following:
―  Short to body ground
―  Open circuit
―  Short circuit between terminals
Note
•  Inspect for continuity while shaking the wiring harness between the SAS unit 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 unit and the passenger-side air bag module (inflator No.1).
3
INSPECT THE WIRING HARNESS BETWEEN THE SAS UNIT 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 with SAS unit connector and passenger-side air bag module connector disconnected.
•  Measure the voltage of SAS unit connector terminals 1P and 1M of SAS unit harness side connector.
Note
•  Measure the voltage while shaking the wiring harness between the SAS unit and passenger-side air bag module (inflator No.1).
•  Is the voltage measured?
Yes
Replace the wiring harness between the SAS unit and the passenger-side air bag module (inflator No.1).
No
Go to the next step.
4
INSPECT 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.
•  Connect the SST (Fuel and thermometer checker) or apply 2 ohms resistance to the passenger-side air bag module connector terminals C and D.
•  Set the SST (fuel and thermometer checker) to 2 ohms.
•  Except for the passenger-side air bag module connector, reconnect all disconnected connectors.
•  Connect the negative battery cable.
•  Turn the ignition switch to the ON position.
•  Clear DTCs using the WDS or eguivalent. (See CLEARING DTC.)
•  Perform the DTC inspection for the SAS unit using the WDS or eguivalent. (See DTC DISPLAY.)
•  Are the same DTCs present?
Yes
Go to the next step.
No
Replace the passenger-side air bag module. (See PASSENGER-SIDE AIR BAG MODULE REMOVAL/INSTALLATION.)
5
INSPECT DTCs
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1min or more.
•  Disconnect the SST (Fuel and thermometer checker) or the 2 ohms resistance.
•  Connect the passenger-side air bag module connector.
•  Connect the negative battery cable.
•  Turn the ignition switch to the ON position.
•  Clear DTCs using the WDS or eguivalent. (See CLEARING DTC.)
•  Perform the DTC inspection for the SAS unit using the WDS or eguivalent. (See DTC DISPLAY.)
•  Are the same DTCs present?
Yes
Replace the SAS unit.
(See SAS UNIT REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.