DTC B2296


id080200802400

DTC B2296

Crash zone sensor (communication error, internal circuit abnormal)

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 crash zone sensor and SAS control module
•  Malfunction in the crash zone sensor circuit
POSSIBLE CAUSE
•  Crash zone sensor connector malfunction
•  Open or short circuit in the wiring harness between the crash zone sensor and SAS control module
•  Crash zone sensor malfunction
•  SAS control module malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
INSPECT CRASH ZONE SENSOR
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.
•  Disconnect the crash zone sensor connector.
•  Is there any malfunction of the crash zone sensor connector?
Yes
Replace the air bag wiring harness.
No
Go to the next step.
2
INSPECT WIRING HARNESS BETWEEN CRASH ZONE SENSOR 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.
•  Remove the glove compartment.(See GLOVE COMPARTMENT REMOVAL/INSTALLATION.)
•  Disconnect the passenger-side air bag module 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.
•  Connect the negative battery cable.
•  Inspect the wiring harnesses between SAS control module connector terminal 1C and crash zone sensor connector terminal A, SAS control module connector terminal 1B and crash zone sensor 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 crash zone sensor.
•  Is the wiring harness normal?
Yes
Go to the next step.
No
Replace the air bag wiring harness.
3
INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND CRASH ZONE SENSOR 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 crash zone sensor connector disconnected.
•  Measure the voltage of SAS control module connector terminals 1C and 1B of SAS control module harness side connector.
Note
•  Measure the voltage while shaking the wiring harness between the SAS control module and crash zone sensor.
•  Is the voltage measured?
Yes
Replace the wiring harness between the SAS control module and the crash zone sensor.
No
Replace the crash zone sensor, then go to the next step.
4
PERFORM DTC INSPECTION
•  Turn the ignition switch to the LOCK position.
•  Disconnect the negative battery cable and wait for 1 min or more.
•  Reconnect all disconnected connectors.
•  Turn the ignition switch to the ON position.
•  Clear DTCs using the M-MDS.
(See CLEARING DTC.)
•  Perform the DTC inspection for the SAS control module using the M-MDS.
(See DTC DISPLAY.)
•  Are DTCs B2296 displayed?
Yes
Replace the SAS control module.
No
DTC troubleshooting completed.