DTC U0402:00 [DSC HU/CM]
id040262881800
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DTC
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U0402:00
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Signal error from TCM
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DETECTION CONDITION
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• Error detected in signal from TCM via CAN communication.
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FAIL-SAFE FUNCTION
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• Refer to “Fail-safe function table”. (See DTC TABLE [DSC HU/CM].)
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POSSIBLE CAUSE
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• TCM 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 DTC
• Using the M-MDS, perform the TCM DTC inspection.
• Are any DTCs present?
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Yes
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Go to the 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 DSC HU/CM.
(See CLEARING DTC [DSC HU/CM].)
• Using the M-MDS, perform the DSC HU/CM DTC inspection.
(See DTC INSPECTION [DSC HU/CM].)
• 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 control valve body, 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 the applicable DTC inspection.
(See DTC TABLE [DSC HU/CM].)
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No
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DTC troubleshooting completed.
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