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DTC U0415:00 [ELECTRIC POWER STEERING (EPS) (E)]

DTC U0415:00 [ELECTRIC POWER STEERING (EPS) (E)]

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Outline

System malfunction location
Signal error from DSC HU/CM (without Mazda M Hybrid)/electronically controlled brake unit (with Mazda M Hybrid)
Detection condition
•  Error detected in signal from DSC HU/CM (without Mazda M Hybrid)/electronically controlled brake unit (with Mazda M Hybrid) via CAN communication
Fail-safe
•  Refer to “Fail-safe Function Table”. (See DTC TABLE [ELECTRIC POWER STEERING (EPS) (E)].)
Possible cause
•  DSC HU/CM (without Mazda M Hybrid)/electronically controlled brake unit (with Mazda M Hybrid) malfunction
System wiring diagram
Not applicable
Connector diagram
Not applicable


Diagnostic Procedure

Step

Inspection

Results

Action
1
VERIFY DSC HU/CM (WITHOUT Mazda M Hybrid)/ELECTRONICALLY CONTROLLED BRAKE UNIT (WITH Mazda M Hybrid) DTC
•  Using the M-MDS, perform the DSC HU/CM (without Mazda M Hybrid)/electronically controlled brake unit (with Mazda M Hybrid) DTC inspection.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [DSC HU/CM (E)].)
(See DTC TABLE [ELECTRONICALLY CONTROLLED BRAKE UNIT].)
DTC troubleshooting completed, then perform the repair completion verification.
No
Go to the next step.
Repair completion verification
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Using the M-MDS, clear the DTC from the EPS control module.
•  Using the M-MDS, perform the EPS control module DTC inspection.
•  Is the same Pending DTC present?
Yes
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)
If the CAN communication is normal, perform the diagnosis from Step 1.
•  If the malfunction recurs, replace the DSC HU/CM (without Mazda M Hybrid)/electronically controlled brake unit (with Mazda M Hybrid).
No
DTC troubleshooting completed.