DTC B2434, B2435, B2691
id080200802500
DTC |
B2434 |
Driver‐side front buckle switch circuit short to body ground |
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B2435 |
Driver-side front buckle switch circuit resistance not within specification |
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B2691 |
Driver‐side front buckle switch circuit open or short to power supply |
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DETECTION CONDITION
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• Malfunction in the driver-side front buckle switch circuit
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POSSIBLE CAUSE
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• Malfunction of the connectors between the driver-side front buckle switch and SAS control module
• Driver-side front buckle switch malfunction
• Open or short circuit in the wiring harness between the driver-side front buckle switch and body ground
• Open circuit or short to ground in the wiring harness between the driver-side front buckle switch and SAS control module
• Open circuit or power supply short in the wiring harness between the driver-side front buckle switch and SAS control module
• SAS control module malfunction
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Diagnostic procedure
Step |
Inspection |
Action |
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1
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INSPECT DRIVER-SIDE FRONT BUCKLE SWITCH CONNECTOR
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the front seat. (See FRONT SEAT REMOVAL/INSTALLATION.)
• Disconnect the driver-side front buckle switch connector. (See FRONT BUCKLE REMOVAL/INSTALLATION.)
• Inspect the driver-side front buckle switch connection. (Corrosion, damage, and disconnected pins)
• Is there any malfunction of the driver-side front buckle switch connector?
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Yes
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Replace the driver-side front buckle switch 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 DRIVER-SIDE FRONT BUCKLE SWITCH
• Remove the driver-side front buckle.
• Inspect the driver-side front buckle switch.
• Is the driver-side front buckle switch 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 driver-side front buckle.
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3
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INSPECT WIRING HARNESS BETWEEN DRIVER-SIDE BUCKLE SWITCH AND GROUND
• Inspect the wiring harness between driver-side front buckle switch terminal F and ground 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 wiring harness.
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4
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INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND DRIVER-SIDE FRONT BUCKLE SWITCH
• Disconnect all SAS control module connectors.
• Inspect the wiring harness between SAS control module terminal 2T and driver-side front buckle switch terminal E 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 wiring harness between the SAS control module and the driver-side front buckle.
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5
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INSPECT THE WIRING HARNESS BETWEEN THE SAS CONTROL MODULE AND DRIVER-SIDE FRONT BUCKLE SWITCH FOR A SHORT CIRCUIT TO THE POWER SUPPLY
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the voltage of SAS control module connector terminals 2T.
• 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 front buckle.
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No
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Go to the next step.
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6
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PERFORM DTC INSPECTION
• Disconnect the negative battery cable and wait for 1 min or more.
• Connect the driver-side front buckle switch connector.
• Connect the SAS control module connectors.
• Connect the negative battery cable.
• Clear DTCs using the M-MDS.
(See DTC DISPLAY.)
• Verify DTCs using the M-MDS.
(See DTC DISPLAY.)
• Are DTCs B2434, B2435 and/or B2691 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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