2012 MAZDA MX-5 MIATA All Models Service and Repair Manual

CONTROL SYSTEM [L8, LF] 01-40–1 01-40 CONTROL SYSTEM [L8, LF] ENGINE CONTROL SYSTEM OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–3 Specification. . . . . . . . . . . . . . . . . . . . . 01-40–3 ENGINE CONTROL SYSTEM STRUCTURAL VIEW [L8, LF] . . . . . . . 01-40–4 ENGINE CONTROL SYSTEM DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–5 ENGINE CONTROL SYSTEM WIRING DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . 01-40–6 ENGINE CONTROL SYSTEM BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . 01-40–8 ENGINE CONTROL SYSTEM RELATION CHART [L8, LF] . . . . . . . . . 01-40–9 MAIN RELAY CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–10 MAIN RELAY CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . 01-40–10 MAIN RELAY CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–11 DRIVE-BY-WIRE CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–11 DRIVE-BY-WIRE CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . 01-40–12 DRIVE-BY-WIRE CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . 01-40–13 Idle Speed Control . . . . . . . . . . . . . . . . 01-40–13 Accelerator Control . . . . . . . . . . . . . . . 01-40–13 Traction Control . . . . . . . . . . . . . . . . . . 01-40–14 Cruise Control (With Cruise Control System) . . . . . . 01-40–14 DRIVE-BY-WIRE RELAY CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . 01-40–15 DRIVE-BY-WIRE RELAY CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . 01-40–15 VARIABLE INTAKE AIR CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . 01-40–15 VARIABLE INTAKE AIR CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . 01-40–15 VARIABLE INTAKE AIR CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . 01-40–16 VARIABLE TUMBLE CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . 01-40–16 VARIABLE TUMBLE CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . 01-40–16 VARIABLE TUMBLE CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . 01-40–16 Operation conditions . . . . . . . . . . . . . . 01-40–16 Inhibition conditions . . . . . . . . . . . . . . . 01-40–16 VARIABLE VALVE TIMING CONTROL OUTLINE [LF] . . . . . . . . . . . . . . . . . . . . 01-40–16 VARIABLE VALVE TIMING CONTROL BLOCK DIAGRAM [LF] . . . . . . . . . . . . 01-40–17 VARIABLE VALVE TIMING CONTROL OPERATION [LF] . . . . . . . . . . . . . . . . . 01-40–17 Cleaning Mode . . . . . . . . . . . . . . . . . . . 01-40–17 Maximum Cam Retard Mode . . . . . . . . 01-40–17 Feedback Hold Mode . . . . . . . . . . . . . . 01-40–18 Feedback Mode . . . . . . . . . . . . . . . . . . 01-40–18 Advance Spark Speed Correction . . . . 01-40–18 Valve Timing Determination . . . . . . . . . 01-40–18 FUEL INJECTION CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–19 FUEL INJECTION CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . . 01-40–20 FUEL INJECTION CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . . 01-40–20 Operation . . . . . . . . . . . . . . . . . . . . . . . 01-40–20 Injection Time . . . . . . . . . . . . . . . . . . . . 01-40–21 Determination of Effective Injection Time . . . . . . . . . . . . . . . . . . . 01-40–21 Fuel cut . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–24 FUEL PUMP CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–24 FUEL PUMP CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . . 01-40–25 FUEL PUMP CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–25 Operation Condition . . . . . . . . . . . . . . . 01-40–25 ELECTRONIC SPARK ADVANCE (ESA) CONTROL OUTLINE [L8, LF] . . . . . . . . 01-40–25 ELECTRONIC SPARK ADVANCE (ESA) CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–26 ELECTRONIC SPARK ADVANCE (ESA) CONTROL OPERATION [L8, LF] . . . . . 01-40–26 Ignition Method . . . . . . . . . . . . . . . . . . . 01-40–26 Determination of Ignition Timing . . . . . . 01-40–27 EGR CONTROL OUTLINE [L8, LF] . . . . . 01-40–29 EGR CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–29 EGR CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–29 Stepping Motor Operation Principles. . . . . . . . . . . . . . . . . . . . . . . 01-40–29 Control Outline . . . . . . . . . . . . . . . . . . . 01-40–30 Target EGR Valve Position . . . . . . . . . . 01-40–30 Inhibition Conditions . . . . . . . . . . . . . . . 01-40–30 EVAPORATIVE PURGE CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . 01-40–30 EVAPORATIVE PURGE CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . 01-40–31 EVAPORATIVE PURGE CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . . 01-40–31 Determination of Purge Solenoid Valve Energization Time . . . . . . . . . . . . . . . . 01-40–31 Calculation Method for Purge Flow Amount . . . . . . . . . . . . . . . 01-40–31 Operation Conditions . . . . . . . . . . . . . . 01-40–31 AIR FUEL RATIO (A/F) SENSOR, HEATED OXYGEN SENSOR (HO2S) HEATER CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–32 AIR FUEL RATIO (A/F) SENSOR, HEATED OXYGEN SENSOR (HO2S) HEATER CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . . . . . . . . 01-40–32 AIR FUEL RATIO (A/F) SENSOR, HEATED OXYGEN SENSOR (HO2S) HEATER CONTROL OPERATION [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–32 Operation Conditions . . . . . . . . . . . . . . 01-40–32 A/C CUT-OFF CONTROL OUTLINE [L8, LF] . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40–33 A/C CUT-OFF CONTROL BLOCK DIAGRAM [L8, LF] . . . . . . . . . . 01-40–33 BACK TO CHAPTER INDEX TO MODEL INDEX Features . . . . . . . . . . . . . . . . . . . . . . . . 01-40–3 PAGE 1 OF 2 MAZDA MX5 2009MY TECHNICAL GUIDE

2012 MAZDA MX-5 MIATA All Models Service and Repair Manual

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