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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 P1708-24: Starter Interlock Switch Circuit Malfunction [Start Stop Unit] >> Notes

DTC P1708-24: Starter Interlock Switch Circuit Malfunction [Start Stop Unit]: Notes

DTC P1708:24 (START STOP UNIT) DETECTION CONDITION AND POSSIBLE CAUSE

Description Starter interlock switch circuit malfunction
Detection condition
  • Start stop unit detects an open circuit in the starter interlock switch circuit for 0.5 s or more for a continuous 5 times with the ignition switched ON (engine off or on).
Fail-safe
  • Change to the back-up mode.
Possible cause
  • Starter interlock switch connector or terminal malfunction
  • Open circuit in wiring harness between starter interlock switch terminal B and body ground
  • Starter interlock switch malfunction
  • PCM connector or terminal malfunction
  • Start stop unit connector or terminal malfunction
  • Open circuit in wiring harness between the following terminals:
    • PCM terminal 2BD-Starter interlock switch terminal A
    • Start stop unit terminal 1F-Starter interlock switch terminal A
  • PCM malfunction
  • Start stop unit malfunction
G15747529Courtesy of MAZDA MOTORS CORP.