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Home >> Mazda >> 2023 >> MX-5 Miata Club >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> On-Board Diagnostic - Start Stop Unit >> DTC C2003-13: Open Circuit In Steering Switch [Start Stop Unit] >> Notes

DTC C2003-13: Open Circuit In Steering Switch [Start Stop Unit]: Notes

DTC C2003:13 (START STOP UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

Description Open circuit in steering switch
Detection condition
  • Start stop unit detects an open circuit in the steering switch circuit for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe Not applicable
Possible cause
  • Clock spring connector or terminal malfunction
  • Clock spring malfunction
  • Start stop unit connector or terminal malfunction
  • Open circuit in wiring harness between the following terminals:
    • Start stop unit terminal 1AA-Clock spring terminal 1K
    • Start stop unit terminal 1AB-Clock spring terminal 1C
  • Steering switch malfunction
  • Start stop unit malfunction
G15747512Courtesy of MAZDA MOTORS CORP.