DTC B1317, B1318
id080200811500
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DTC |
B1317 |
SAS control module power supply voltage increases (16.1 V or more) |
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B1318 |
SAS control module power supply voltage decreases (less than 8 V) |
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DETECTION CONDITION
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• When the SAS control module power supply voltage is not within 8―16 V.
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POSSIBLE CAUSE
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• Battery malfunction
• A/B 7.5 A fuse malfunction
• SAS control module connector malfunction
• Open or short circuit in wiring harness between battery and SAS control module
• Open circuit in wiring harness between SAS control module and body ground
• 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 BATTERY
• Measure the battery positive voltage.
• Is the voltage 8 V―16 V?
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Yes
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Go to the next step.
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No
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Battery is malfunctioning
Inspect the charge/discharge system.
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2
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INSPECT FUSE
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the A/B 7.5 A fuse.
• Is the fuse normal?
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Yes
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Install the fuse, then go to the next step.
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No
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Replace the fuse.
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3
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INSPECT WIRING HARNESS BETWEEN BATTERY AND FUSE BLOCK
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the fuse block terminal Y voltage.
• Is the voltage 8 V―16 V?
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Yes
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Install the fuse, then go to the next step.
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No
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Repair the wiring harness between the battery and fuse block.
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4
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INSPECT SAS CONTROL MODULE CONNECTOR
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Remove the console. (See CONSOLE REMOVAL/INSTALLATION.)
• Disconnect all SAS control module connectors.
• Inspect the SAS control module connection. (Corrosion, damage, and disconnected pins)
• Is there any malfunction of the SAS control module connector?
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Yes
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Replace the SAS control module wiring harness.
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No
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Go to the next step.
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5
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INSPECT WIRING HARNESS BETWEEN FUSE BLOCK 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.
• Connect the negative battery cable.
• Turn the ignition switch to the ON position.
• Measure the voltage of SAS control module terminal 1W.
• Is the voltage 8 V―16 V?
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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 fuse block and SAS control module.
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6
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INSPECT WIRING HARNESS BETWEEN SAS CONTROL MODULE AND BODY GROUND
• Turn the ignition switch to the LOCK position.
• Disconnect the negative battery cable and wait for 1 min or more.
• Inspect for continuity between SAS control module connector terminal 1X and body ground.
• Is there continuity?
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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 body ground.
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7
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PERFORM SAS CONTROL MODULE DTC INSPECTION
• Reconnect the 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 B1317 and/or B1318 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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