DTC U2300:55 [DSC HU/CM]
id040262013000
Outline
System malfunction location |
Configuration data |
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Detection condition
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• The DSC HU/CM detects any of the following conditions.
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Fail-safe
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Refer to “DTC Table” and “Fail-safe Function Malfunction Contents Table”.(See DTC TABLE [DSC HU/CM (E)].)
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Possible cause
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• DTCs are stored in the body control module (BCM).
• Configuration procedure was not completed properly.
• PCM malfunction
• Body control module (BCM) malfunction
• DSC HU/CM malfunction
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System wiring diagram
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Not applicable
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Connector diagram
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Not applicable
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Diagnostic Procedure
Step |
Inspection |
Results |
Action |
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1
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INSPECT PCM FOR MALFUNCTION
• Perform the DTC inspection for PCM.
(See DTC INSPECTION.)
• Are any DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-D)].)
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No
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Go to the next step.
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2
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INSPECT BODY CONTROL MODULE (BCM) FOR MALFUNCTION
• Perform the DTC inspection for body control module (BCM).
(See DTC INSPECTION.)
• Are any DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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Go to the next step.
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3
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VERIFY REPLACEMENT RECORD OF DSC HU/CM
• Before performing the troubleshooting diagnostic procedure this time, verify if the DSC HU/CM was replaced.
• Was the DSC HU/CM replaced?
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Yes
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After reimplementing the required servicing when replacing the DSC HU/CM in accordance with DSC HU/CM removal/installation, perform the repair completion verification.
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No
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Go to the next step.
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4
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RESET CONFIGURATION DATA FOR BODY CONTROL MODULE (BCM)
• Perform the body control module (BCM) configuration using the M-MDS.
(See CONFIGURATION.)
• Clear the DTC recorded in the memory.
(See CLEARING DTC.)
• Switch the ignition ON (engine off or on) and wait for 30 s or more.
• Perform the DTC inspection for the DSC HU/CM.
(See DTC INSPECTION.)
• Is the same Pending DTC present?
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Yes
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Perform the body control module (BCM) configuration again using the M-MDS and perform the repair completion verification.
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No
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Go to repair completion verification 2.
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Repair completion verification 1
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VERIFY THAT VEHICLE IS REPAIRED
• Clear the DTC recorded in the memory.
(See CLEARING DTC.)
• Switch the ignition ON (engine off or on) and wait for 30 s or more.
• Perform the DTC inspection for the DSC HU/CM.
(See DTC INSPECTION.)
• Is the same Pending DTC present?
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Yes
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
• If the malfunction recurs, replace the DSC HU/CM, then go to the next step.
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No
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Go to the next step.
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Repair completion verification 2
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VERIFY IF OTHER DTC IS DISPLAYED
• Perform the DTC inspection.
(See DTC INSPECTION.)
• Are any other DTCs displayed?
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Yes
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Repair the malfunctioning location according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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