DTC U3003:17 [BCM]
id0902f5310200
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DESCRIPTION |
BCM power supply circuit malfunction |
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DETECTION CONDITION
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• BCM power supply circuit voltage is higher than 16 V for 5 s or more.
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POSSIBLE CAUSE
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• PCM DTC is stored.
• Battery malfunction
• Generator malfunction
• BCM malfunction
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Diagnostic Procedure
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STEP |
INSPECTION |
ACTION |
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1
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CONFIRM BCM DTC
• Clear the DTC using the M-MDS.
(See CLEARING DTC [BCM].)
• Switch the ignition to ON and wait for 5 s or more.
• Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)
• Is the same DTC present?
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Yes
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Go to the next step.
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No
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Go to Step 6.
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2
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CONFIRM PCM DTC
• Perform the PCM DTC inspection using the M-MDS.
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [MZR 1.5, MZR 1.6].)
(See DTC TABLE [MZR 2.0, MZR 2.5].)
(See DTC TABLE [MZ-CD 1.6].)
(See DTC TABLE [MZR-CD 2.2].)
(See DTC TABLE [SKYACTIV-G 2.0].)
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No
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Go to the next step.
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3
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INSPECT BATTERY
• Inspect the battery.
• Is there any malfunction?
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Yes
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Replace the battery, then go to Step 5.
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No
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Go to the next step.
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4
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INSPECT GENERATOR
• Inspect the generator.
• Is there any malfunction?
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Yes
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Replace the generator, then go to the next step.
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No
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Go to the next step.
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5
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VERIFY TROUBLESHOOTING COMPLETED
• Clear the DTC using the M-MDS.
(See CLEARING DTC [BCM].)
• Switch the ignition to ON and wait for 5 s or more.
• Perform the BCM DTC inspection using the M-MDS.
(See DTC INSPECTION [BCM].)
• Is the same DTC present?
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Yes
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Repeat the inspection from Step 1.
• If the malfunction recurs, replace the BCM.
Go to the next step.
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No
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Go to the next step.
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6
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VERIFY THAT NO OTHER DTCs ARE PRESENT
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [BCM].)
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No
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DTC troubleshooting completed.
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