DTC B1317/B1318 [ADVANCED KEYLESS SYSTEM]
id0902e2802400
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DTC B1317 |
Keyless control module power supply voltage increases (16.1 V or more). |
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DTC B1318 |
Keyless control module power supply voltage decreases (less than 9 V). |
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POSSIBLE CAUSE
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• When the keyless control module power supply voltage is not within 9—16 V
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POSSIBLE CAUSE
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• Open or short circuit in wiring harness between battery and keyless control module
• Battery malfunction
• Keyless 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 FUSE
• Remove the ROOM fuse.
• Is the fuse 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 fuse.
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2
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INSPECT BATTERY
• Measure the battery positive voltage.
• Is the voltage 9 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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The battery has a malfunction.
Inspect the charge/discharge system/
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3
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INSPECT WIRING HARNESS BETWEEN BATTERY AND KEYLESS CONTROL MODULE
• Turn the ignition switch to the ON position.
• Measure the keyless control module terminal 2A voltage
• Is the voltage 9 V—16 V?
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Yes
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Replace the keyless control module and perform the resetting procedure for the advanced keyless system when replacing the keyless control module.
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No
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DTC troubleshooting completed.
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