DTC B2444, U2017

id080200802700

DTC

B2444

Driver‐side side air bag sensor system internal circuit disabled

U2017

Driver‐side side air bag sensor system communication error
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.
•  Malfunction in wiring harness between driver-side side air bag sensor and SAS control module
•  Malfunction in driver-side side air bag sensor circuit
POSSIBLE CAUSE
•  Open or short circuit in wiring harness between driver-side side air bag sensor and SAS control module
•  Driver-side side air bag sensor malfunction
•  SAS control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION
1
INSPECT DRIVER‐SIDE SIDE AIR BAG SENSOR 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 engine switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Disconnect the driver-side side air bag sensor connector.
•  Is there any malfunction of the driver-side side air bag sensor connector?
Yes
Replace the air bag wiring harness.
No
Go to the next step.
2
INSPECT WIRING HARNESS BETWEEN DRIVER-SIDE SIDE AIR BAG SENSOR AND SAS CONTROL MODULE
•  Turn the engine switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Remove the console.
•  Disconnect the SAS control module connector.
•  Disconnect the driver-side side air bag sensor connector.
•  Inspect the wiring harnesses between SAS control module terminal 2AA and driver-side side air bag sensor terminal A, SAS control module terminal 2Z and driver-side side air bag sensor terminal B for the following:
―  Short to ground
―  Short to power supply
―  Open circuit
•  Is the wiring harness normal?
Yes
Replace the driver-side side air bag sensor, then go to the next step.
(See SIDE AIR BAG SENSOR REMOVAL/INSTALLATION.)
No
Replace the air bag wiring harness.
3
INSPECT SAS CONTROL MODULE
•  Connect the SAS control module connector.
•  Connect the driver-side side air bag sensor connector.
•  Connect the negative battery cable.
•  Turn the engine switch to the ON position.
•  Are DTCs B2444, U2017 indicated?
Yes
Replace the SAS control module.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
No
DTC troubleshooting completed.