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DTC U0452-00: Communication Error With SAS Control Module Error Signal Received From SAS Control Module: Outline

DTC U0452:00 (PCM, SKYACTIV-G, WITH MAZDA M HYBRID) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location SAS control module system Electronically controlled brake unit system (unperformed initialization procedure) SAS control module (poor installation) Communication error with SAS control module Error signal received from SAS control module
Detection condition
  • The PCM detects that the electronically controlled brake unit stores the following DTCs.
    • C0061:28
    • C0061:54
    • C0061:64
    • C0062:28
    • C0062:54
    • C0062:64
    • C0062:76
    • C0063:28
    • C0063:64
    • U0151:00
    • U0452:68
Fail-safe
  • Inhibits the i-stop control.
  • Inhibits the regenerative braking control.
Possible cause
  • DTCs are stored in the electronically controlled brake unit.
    NOTE:
    • If the electronically controlled brake unit stores a DTC, the PCM stores the same DTC or similar.
    • If the PCM stores a DTC even though the electronically controlled brake unit does not store a DTC, clear the DTC as it was for a past malfunction, and then complete the repair.
System wiring diagram
  • Not applicable
Connector diagram
  • Not applicable
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