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Home >> Mazda >> 2024 >> CX-90 Turbo Select >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> On-Board Diagnostic - Dash-Electrical Supply Unit (2 Of 2) >> DTC U0412-68: Error Signal Received From BECM/MAZDA M Hybrid Boost Battery

DTC U0412-68: Error Signal Received From BECM/MAZDA M Hybrid Boost Battery

U0412:68 (DASH_ESU) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Error signal received from BECM/Mazda M Hybrid Boost battery
Detection condition
  • The dash-electrical supply unit receives the error signal from the BECM/Mazda M Hybrid Boost battery.
Fail-safe
  • Control at the default signal value.
Possible cause
  1. DTCs are stored in the BECM/Mazda M Hybrid Boost battery. (See DTC TABLE [MHB (e-SKYACTIV PHEV)] .) (See DTC TABLE [MHB (WITH Mazda M Hybrid BOOST)] .)
  2. BECM/Mazda M Hybrid Boost battery malfunction (Refer to [BECM REMOVAL/INSTALLATION ] ). (Refer to [M HYBRID BOOST BATTERY REMOVAL/INSTALLATION ] ).
  3. Dash-electrical supply unit malfunction (Refer to [DASH-ELECTRICAL SUPPLY UNIT REMOVAL/INSTALLATION ] ).
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (See CLEARING DTC .)
System wiring diagram
  • Not applicable