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Home >> Mazda >> 2024 >> MX-5 Miata Club >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Body Control Module (BCM) (1 Of 2) >> DTC B1026-87: Communication Error Between Body Control Module (BCM) And Steering Lock Unit
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DTC B1026-87: Communication Error Between Body Control Module (BCM) And Steering Lock Unit

B1026-87: (BCM) DETECTION CONDITION AND POSSIBLE CAUSE

System malfunction location Communication error between body control module (BCM) and steering lock unit
Detection condition
  • The body control module (BCM) cannot receive the signals from the steering lock unit.
Fail-safe
  • Not applicable
Possible cause
  1. Malfunction in wiring harness (including connector/terminal) between start stop unit and body control module (BCM) (See CIRCUIT INSPECTION .) (See CONNECTOR INSPECTION .)
  2. Steering lock unit malfunction (Refer to START STOP UNIT INSPECTION in service information.)
  3. Body control module (BCM) malfunction (Refer to BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION in service information.)
Repeatability verification procedure
  1. Clear the DTC recorded in the memory. (See CLEARING DTC .)
G16809530Courtesy of MAZDA MOTORS CORP.
1 Body control module (BCM)
2 Start stop unit