DTC B1053, B2432, B2433, B2434, B2435

#
DTC B1053, B2432, B2433, B2434, B2435

B3E080201046W23

DTC | B1053 | Driver-side front buckle switch and other sensor circuits short to power supply
--- | --- | ---
B2432 | Driver-side front buckle switch circuit open
B2433 | Driver-side front buckle switch circuit open or short to power supply
B2434 | Driver-side front buckle switch circuit short to body ground
B2435 | Driver-side front buckle switch circuit resistance not within specification

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 the wiring harness between the driver-side front buckle switch and SAS control module
• Malfunction in driver-side front buckle switch circuit

POSSIBLE CAUSE | • Malfunction of connectors between driver-side front buckle switch and SAS control module • Open or short circuit in wiring harness between driver-side front buckle switch and SAS control module • Driver-side front buckle switch malfunction • SAS control module malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---

1

INSPECT DRIVER-SIDE BUCKLE SWITCH CIRCUIT
• Using the WDS or equivalent, verify the following PID/DATA monitor. (See PID/DATA MONITOR TABLE.)

  - DR_BUKL

• Is the driver-side front buckle switch normal?

Yes

Replace the SAS control module.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)

No | Go to the next step.

2

INSPECT WIRING HARNESS BETWEEN DRIVER-SIDE BUCKLE SWITCH AND GROUND

  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.
• Disconnect the driver-side front buckle switch connector.
• Inspect the wiring harness between driver-side front buckle switch terminal B and ground for the following:

  - Short to power supply
  - Open circuit

• Is the wiring harness normal?

Yes

Go to the next step.

No | Replace the wiring harness.

3

INSPECT WIRING HARNESS BETWEEN DRIVER-SIDE BUCKLE SWITCH AND SAS CONTROL MODULE
• Disconnect the driver and passenger-side front seat connectors.
• Disconnect the driver and passenger-side curtain air bag module connectors.
• Remove the console.
• Disconnect the SAS control module connector.
• Inspect the wiring harness between SAS control module terminal 2W and driver-side front buckle switch terminal A for the following:

  - Short to ground
  - Short to power supply
  - Open circuit

• Is the wiring harness normal?

Yes

Replace the driver-side front buckle.
(See FRONT BUCKLE REMOVAL/INSTALLATION.)
If the DTC is displayed even after the buckle switch is replaced, replace the SAS control module.
(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)

No | Replace the wiring harness.