DTC U0415:00 [VEHICLE CONTROL MODULE (V/C-MODULE)]


id0102i0334600

System malfunction location

Error signal received from DSC HU/CM

Detection condition
•  Communication error between DSC HU/CM and vehicle control module (V/C-module)
Fail-safe
•  Inhibits the mazda radar cruise control (MRCC) system control
•  Inhibits the smart brake support (SBS) system control
•  Inhibits the distance recognition support system (DRSS) control
Possible cause
•  DSC HU/CM malfunction
•  Vehicle control module (V/C-module) malfunction
System wiring diagram
•  Not applicable


Diagnostic Procedure

Step

Inspection

Action

1
PERFORM DTC INSPECTION FOR DSC HU/CM
•  Perform the DSC HU/CM DTC inspection using the M-MDS.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
Then go to Step 3.
No
Go to the next step.
2
PERFORM DTC INSPECTION FOR VEHICLE CONTROL MODULE (V/C-MODULE)
•  Clear vehicle control module (V/C-module) DTCs using the M-MDS.
•  Switch the ignition ON (engine on).
•  Perform the vehicle control module (V/C-module) DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Replace the DSC HU/CM, then go to the next step.
No
Go to the next step.
3
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Clear vehicle control module (V/C-module) DTCs using the M-MDS.
•  Switch the ignition ON (engine on).
•  Perform the vehicle control module (V/C-module) DTC inspection using the M-MDS.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the vehicle control module (V/C-module).
Go to the next step.
No
Go to the next step.
4
VERIFY THAT NO OTHER DTCs ARE PRESENT
•  Verify other DTCs displayed.
•  Are any other DTCs output?
Yes
Perform the corresponding DTC inspection.
No
DTC troubleshooting completed.