DTC U0402:00 [ELECTRIC PARKING BRAKE]
id040257253800
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Description |
Error signal received from TCM |
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Detection condition
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• Electric parking brake control module receives the error signals from the TCM with the ignition switched ON (engine off or on).
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Fail-safe
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Not applicable
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Possible cause
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• DTCs are stored in the TCM.
• TCM malfunction
• Electric parking brake control module malfunction
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System wiring diagram
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Not applicable
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Diagnostic Procedure
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Step |
Inspection |
Action |
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1
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VERIFY TCM DTCs
• Retrieve the TCM DTCs using the M-MDS.
• Are any DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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Go to the next step.
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2
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VERIFY IF MALFUNCTIONING LOCATION IS TCM DEPENDING ON REPEATABILITY
• Clear the DTC for the electric parking brake control module using the M-MDS.
• Perform the following procedure 3 times or more.
• Retrieve the electric parking brake control module DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Replace the TCM, then go to the next step.
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No
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Go to Step 4.
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3
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VERIFY THAT REPAIRS HAVE BEEN COMPLETED
• Clear the DTC for the electric parking brake control module using the M-MDS.
• Perform the following procedure 3 times or more.
• Retrieve the electric parking brake control module DTCs using the M-MDS.
• Is the same DTC displayed?
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Yes
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Replace the electric parking brake control module, then go to the next step.
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No
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Go to the next step.
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4
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VERIFY IF OTHER DTCs DISPLAYED
• Are any other DTCs displayed?
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Yes
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Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
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No
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DTC troubleshooting completed.
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