DTC U0401:00/U0401:82 [LASER SENSOR]
id1502b2705800
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DTC
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U0401:00
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Signal error from PCM
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U0401:82
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DETECTION CONDITION
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• Error detected in signal from PCM via CAN communication
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FAIL-SAFE FUNCTION
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• Master warning light Illuminates
• Smart City Brake Support (SCBS) control disabled
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POSSIBLE CAUSE
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• PCM malfunction
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SYSTEM WIRING DIAGRAM
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—
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY PCM DTC
• Using the M-MDS, perform the PCM DTC inspection.
• Are any DTCs present?
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Yes
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Go to applicable DTC inspection.
DTC troubleshooting completed, then go to the next step.
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No
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Go to the next step.
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2
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VERIFY DTC TROUBLESHOOTING COMPLETED
• Using the M-MDS, clear the DTC from the laser sensor.
(See CLEARING DTC [LASER SENSOR].)
• Using the M-MDS, perform the laser sensor DTC inspection.
• Is the same DTC present?
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Yes
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Repeat the inspection from Step1.
If the malfunction recurs, replace the PCM, then go to the next step.
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No
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Go to the next step.
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3
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VERIFY NO DTC IS PRESENT
• Are any DTCs present?
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Yes
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Go to applicable DTC inspection.
(See DTC TABLE [LASER SENSOR].)
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No
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DTC troubleshooting completed.
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