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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 B13BC-11: Heated Steering Wheel Unit Internal Malfunction

DTC B13BC-11: Heated Steering Wheel Unit Internal Malfunction

B13BC:11 (DASH_ESU) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Heated steering wheel unit internal malfunction
Detection condition
  • The dash-electrical supply unit detects a short to ground in the heater circuit in the steering warmer unit.
Fail-safe
  • Stops the steering warmer output.
Possible cause
  1. Heated steering wheel control unit malfunction (Refer to [HEATED STEERING WHEEL CONTROL UNIT REMOVAL ] ). (Refer to [HEATED STEERING WHEEL CONTROL UNIT INSTALLATION ] ).
  2. Steering wheel malfunction (heated steering wheel unit malfunction) (Refer to [STEERING WHEEL AND COLUMN REMOVAL [WITHOUT ELECTRIC TILT TELESCOPIC UNIT] and/or STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION [WITH ELECTRIC TILT TELESCOPIC UNIT] ] ).
  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
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