DTC B1913, B1925, B1933, B1935


id080200801800

DTC

B1913

Passenger-side air bag module circuit short to body ground (air bag system warning light DTC 21 is displayed.)

B1925

Passenger-side air bag module circuit short to power supply

B1933

Passenger-side air bag module circuit resistance high

B1935

Passenger-side air bag module 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—3.6 ohms) detected in the passenger-side air bag module circuit
•  Malfunction in the wiring harness between the passenger-side air bag module and SAS control module
POSSIBLE CAUSE
•  Passenger-side air bag module connector malfunction
•  Open or short circuit in the wiring harness between the passenger-side air bag module and SAS control module
•  Passenger-side air bag module malfunction
•  SAS control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT PASSENGER‐SIDE AIR BAG MODULE CONNECTOR
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 and cautions 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.
•  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.
2
VERIFY WHETHER MALFUNCTION IS IN PASSENGER-SIDE AIR BAG MODULE 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 connector terminals A and B.
•  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 B1913, B1925, B1933 and/or B1935 indicated?
Yes
Go to the next step.
No
Replace the passenger-side air bag module.
3
INSPECT WIRING HARNESS BETWEEN PASSENGER-SIDE AIR BAG MODULE AND SAS CONTROL MODULE
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Remove the column cover. (See COLUMN COVER REMOVAL/INSTALLATION.)
•  Disconnect the clock spring connector.
•  Disconnect the driver and passenger-side seat connectors.
•  Disconnect the driver and passenger-side curtain air bag module connector.
•  Remove the B-pillar lower trim. (See B-PILLAR LOWER TRIM REMOVAL/INSTALLATION.)
•  Disconnect the driver and passenger-side pre-tensioner seat belt connectors.
•  Remove the console. (See CONSOLE REMOVAL/INSTALLATION.)
•  Disconnect the SAS control module connector.
•  Inspect the wiring harness between SAS control module connector terminal 1P and passenger-side air bag module connector terminal A, SAS control module connector terminal 1M and passenger-side air bag module connector terminal B for the following:
―  Short to ground
―  Open circuit
―  Short circuit between terminals
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 air bag wiring harness.
4
INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND PASSENGER-SIDE AIR BAG MODULE FOR A SHORT CIRCUIT TO THE POWER SUPPLY
•  Connect the negative battery cable.
•  Turn the ignition switch to the ON position with SAS control module and passenger-side air bag module connector disconnected.
•  Measure the voltage of SAS control module connector terminals 1P and 1M of SAS control module harness side connector.
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 air bag wiring harness.
No
Go to the next step.
5
INSPECT DTCs
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Reconnect all disconnected connectors.
•  Connect the negative battery cable.
•  Switch the ignition to ON.
•  Clear DTCs using the M-MDS.
(See CLEARING DTC.)
•  Verify DTCs using the M-MDS.
•  Is DTC B1913, B1925, B1933 and/or B1935 displayed again?
Yes
Replace the SAS control module.
No
DTC troubleshooting completed.