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Home >> Mazda >> 2023 >> 3 Turbo >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Symptom Troubleshooting - I-Stop >> I-Stop Function Does Not Operate >> Notes
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I-Stop Function Does Not Operate: Notes

I-STOP FUNCTION DOES NOT OPERATE (SKYACTIV-G) TROUBLESHOOTING REFERENCE

Troubleshooting item i-stop function does not operate
Description
  • i-stop function does not operate when vehicle is stopped.
Possible cause
  • DTCs are stored in the following modules.

    Without Mazda M Hybrid 

    • PCM
    • TCM (ATX)
    • DSC HU/Control Module
    • Dash-electrical supply unit
    • Body control module (BCM)

    With Mazda M Hybrid 

    • PCM
    • DC-DC converter (Mazda M Hybrid)
    • Mazda M Hybrid battery
    • Integrated starter generator (ISG)
    • Electronically controlled brake unit
    • SAS control module
    • TCM
    • EPS control module
    • Body control module (BCM)
  • The i-stop (engine stop control) permit conditions are not met due to either of the following causes:
    • Driver operation
    • Environment (problem other than with vehicle)
    • i-stop related part malfunction
    NOTE:
    • PIDs related to i-stop can be displayed in a list using the M-MDS data monitor diagnostic function.
    • If the engine is stopped by the i-stop control while the following data monitor items on the M-MDS are being viewed, the data monitor items may no longer be displayed.
      • ACC_LON_C
      • BRK_FLD_PRES
      • BRK_PEDAL_SW
      • WSPD_SEN_L/F
      • WSPD_SEN_L/R
      • WSPD_SEN_R/F
      • WSPD_SEN_R/R
System wiring diagram
  • Not applicable
Connector diagram
  • Not applicable


I-STOP FUNCTION DOES NOT OPERATE - SKYACTIV-G (US) TROUBLESHOOTING REFERENCE

Troubleshooting item i-stop function does not operate
Description
  • i-stop function does not operate when vehicle is stopped.
Possible cause
  • DTCs are stored in the following modules.
    • PCM
    • DC-DC converter (Mazda M Hybrid)
    • Mazda M Hybrid battery
    • Integrated starter generator (ISG)
    • Electronically controlled brake unit
    • SAS control module
    • TCM
    • EPS control module
    • Body control module (BCM)
  • The i-stop (engine stop control) permit conditions are not met due to either of the following causes:
    • Driver operation
    • Environment (problem other than with vehicle)
    • i-stop related part malfunction
      NOTE:
      • PIDs related to i-stop can be displayed in a list using the M-MDS data monitor diagnostic function.
      • If the engine is stopped by the i-stop control while the following data monitor items on the M-MDS are being viewed, the data monitor items may no longer be displayed.
        • ACC_LON_C
        • BRK_FLD_PRES
        • BRK_PEDAL_SW
        • WSPD_SEN_L/F
        • WSPD_SEN_L/R
        • WSPD_SEN_R/F
        • WSPD_SEN_R/R
System wiring diagram
  • Not applicable
Connector diagram
  • Not applicable