DTC B2444, U2017
id080200802700
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DTC |
B2444 |
Driver‐side side air bag sensor No.1 (internal circuit abnormal) |
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U2017 |
Driver‐side side air bag sensor No.1 (communication error) |
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DETECTION CONDITION
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• Malfunction in the wiring harness between the driver-side side air bag sensor No.1 and SAS control module
• Malfunction in the driver-side side air bag sensor circuit
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POSSIBLE CAUSE
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• Driver-side side air bag sensor No.1 connector malfunction
• Open or short circuit in wiring harness between driver-side side air bag sensor No.1 and SAS control module
• Driver-side side air bag sensor No.1 malfunction (Including incorrect assembly)
• SAS control module malfunction
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Diagnostic procedure
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STEP |
INSPECTION |
ACTION |
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1
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INSPECT DRIVER‐SIDE SIDE AIR BAG SENSOR NO.1 CONNECTOR
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the B-pillar lower trim (driver-side).
• Disconnect the driver-side side air bag sensor No.1 connector.
• Is there any malfunction of the driver-side side air bag sensor No.1 connector?
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Yes
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Replace the air bag wiring harness.
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No
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Go to the next step.
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2
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INSPECT WIRING HARNESS BETWEEN DRIVER-SIDE SIDE AIR BAG SENSOR NO.1 AND SAS CONTROL MODULE
• 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.
• Disconnect the driver-side side air bag sensor No.1 connector.
• 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 2AA and driver-side side air bag sensor No.1 connector terminal A, SAS control module connector terminal 2Z and driver-side side air bag sensor No.1 connector terminal B for the following:
• Is the wiring harness normal?
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Yes
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Go to the next step.
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No
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Replace the air bag wiring harness.
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3
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INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND DRIVER-SIDE SIDE AIR BAG SENSOR 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 control module connector and driver-side air bag sensor No.1 disconnected.
• Measure the voltage of SAS control module connector terminals 2Z and 2AA of SAS control module harness side connector.
• Is the voltage measured?
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Yes
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Replace the wiring harness between the SAS control module and the driver-side side air bag sensor No.1.
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No
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Replace the driver-side side air bag sensor No.1, then go to the next step.
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4
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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.
• Connect the negative battery cable.
• 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 B2444 and/or U2017 displayed?
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Yes
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Replace the SAS control module.
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No
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DTC troubleshooting completed.
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