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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 P0615-11: Starter Relay Circuit Malfunction [Start Stop Unit] >> Notes

DTC P0615-11: Starter Relay Circuit Malfunction [Start Stop Unit]: Notes

DTC P0615:11 (START STOP UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

Description Starter relay circuit malfunction
Detection condition
  • Start stop unit detects that the starter relay monitor circuit voltage of less than 2.2 V for 0.2 s or more with the ignition switched off.
Fail-safe Not applicable
Possible cause
  • DTCs are stored in the PCM.
  • Starter relay malfunction
  • Start stop unit connector or terminal malfunction
  • PCM connector malfunction
  • Short to ground in wiring harness between the following terminals:
    • Start stop unit terminal 1D-Starter relay terminal E
    • Starter relay terminal E-PCM terminal 2H
    • Start stop unit terminal 2V-Starter relay terminal A
  • PCM malfunction
  • Start stop unit malfunction
G15747517Courtesy of MAZDA MOTORS CORP.