Mazda 2006 MX-5 Service Highlights page 125

01-40 CONTROL SYSTEM
ENGINE CONTROL SYSTEM OUTLINE
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-3
Features . . . . . . . . . . . . . . . . . . . . . . . . 01-40-3
Specification. . . . . . . . . . . . . . . . . . . . . 01-40-3
ENGINE CONTROL SYSTEM
STRUCTURAL VIEW [LF]. . . . . . . . . . . 01-40-4
ENGINE CONTROL SYSTEM DIAGRAM
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-5
ENGINE CONTROL SYSTEM
WIRING DIAGRAM [LF] . . . . . . . . . . . . 01-40-6
ENGINE CONTROL SYSTEM
BLOCK DIAGRAM [LF] . . . . . . . . . . . . 01-40-8
ENGINE CONTROL SYSTEM
RELATION CHART [LF] . . . . . . . . . . . . 01-40-9
MAIN RELAY CONTROL OUTLINE
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-11
MAIN RELAY CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . 01-40-11
MAIN RELAY CONTROL OPERATION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-11
DRIVE-BY-WIRE CONTROL OUTLINE
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-11
DRIVE-BY-WIRE CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . 01-40-12
DRIVE-BY-WIRE CONTROL
OPERATION [LF] . . . . . . . . . . . . . . . . . 01-40-13
Idle Speed Control . . . . . . . . . . . . . . . . 01-40-13
Accelerator Control . . . . . . . . . . . . . . . 01-40-13
Traction Control . . . . . . . . . . . . . . . . . . 01-40-14
Cruise Control . . . . . . . . . . . . . . . . . . . 01-40-14
DRIVE-BY-WIRE RELAY CONTROL
OUTLINE [LF] . . . . . . . . . . . . . . . . . . . . 01-40-15
DRIVE-BY-WIRE RELAY CONTROL
OPERATION [LF] . . . . . . . . . . . . . . . . . 01-40-15
VARIABLE INTAKE AIR CONTROL
OUTLINE [LF] . . . . . . . . . . . . . . . . . . . . 01-40-15
VARIABLE INTAKE AIR CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . 01-40-15
VARIABLE INTAKE AIR CONTROL
OPERATION [LF] . . . . . . . . . . . . . . . . . 01-40-16
VARIABLE VALVE TIMING CONTROL
OUTLINE [LF] . . . . . . . . . . . . . . . . . . . . 01-40-16
VARIABLE VALVE TIMING CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . 01-40-16
VARIABLE VALVE TIMING CONTROL
OPERATION [LF] . . . . . . . . . . . . . . . . . 01-40-16
Cleaning Mode . . . . . . . . . . . . . . . . . . . 01-40-16
Maximum Cam Retard Mode . . . . . . . . 01-40-17
Feedback Hold Mode . . . . . . . . . . . . . . 01-40-17
Feedback Mode . . . . . . . . . . . . . . . . . . 01-40-18
Advance Spark Speed Correction . . . . 01-40-18
Valve Timing Determination . . . . . . . . . 01-40-18
FUEL INJECTION CONTROL
OUTLINE [LF] . . . . . . . . . . . . . . . . . . . . 01-40-18
FUEL INJECTION CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . 01-40-19
FUEL INJECTION CONTROL
OPERATION [LF] . . . . . . . . . . . . . . . . . 01-40-20
Operation . . . . . . . . . . . . . . . . . . . . . . . 01-40-20
Injection Time. . . . . . . . . . . . . . . . . . . . 01-40-20
Determination of Effective
Injection Time. . . . . . . . . . . . . . . . . . . 01-40-21
CONTROL SYSTEM
Fuel Cut. . . . . . . . . . . . . . . . . . . . . . . . . 01-40-23
FUEL PUMP CONTROL OUTLINE
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-24
FUEL PUMP CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . . 01-40-24
FUEL PUMP CONTROL OPERATION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-24
Operation Condition . . . . . . . . . . . . . . . 01-40-24
Operation Inhibition Condition. . . . . . . . 01-40-24
ELECTRONIC SPARK ADVANCE (ESA)
CONTROL OUTLINE [LF] . . . . . . . . . . . 01-40-24
ELECTRONIC SPARK ADVANCE (ESA)
CONTROL BLOCK DIAGRAM [LF] . . . . 01-40-25
ELECTRONIC SPARK ADVANCE (ESA)
CONTROL OPERATION [LF]. . . . . . . . . 01-40-26
Ignition Method . . . . . . . . . . . . . . . . . . . 01-40-26
Determination of Ignition Timing . . . . . . 01-40-27
Ignition Inhibition Condition . . . . . . . . . . 01-40-28
EVAPORATIVE PURGE CONTROL
OUTLINE [LF]. . . . . . . . . . . . . . . . . . . . . 01-40-28
EVAPORATIVE PURGE CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . . 01-40-29
EVAPORATIVE PURGE CONTROL
OPERATION [LF] . . . . . . . . . . . . . . . . . . 01-40-29
Determination of Purge Solenoid Valve
Energization Time . . . . . . . . . . . . . . . . 01-40-29
Calculation Method for Purge
Flow Amount . . . . . . . . . . . . . . . . . . . . 01-40-29
Operation Conditions . . . . . . . . . . . . . . 01-40-29
EGR CONTROL OUTLINE [LF] . . . . . . . . 01-40-30
EGR CONTROL BLOCK DIAGRAM
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-30
EGR CONTROL OPERATION [LF] . . . . . 01-40-30
Stepping Motor Operation Principles . . 01-40-30
Control Outline . . . . . . . . . . . . . . . . . . . 01-40-31
Target EGR Valve Position . . . . . . . . . . 01-40-31
Inhibition Conditions . . . . . . . . . . . . . . . 01-40-31
HEATED OXYGEN SENSOR (HO2S)
HEATER CONTROL OUTLINE [LF] . . . 01-40-32
HEATED OXYGEN SENSOR (HO2S)
HEATER CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . . 01-40-32
HEATED OXYGEN SENSOR (HO2S)
HEATER CONTROL OPERATION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-32
Operation Conditions . . . . . . . . . . . . . . 01-40-32
A/C CUT-OFF CONTROL OUTLINE
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-33
A/C CUT-OFF CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . . 01-40-33
A/C CUT-OFF CONTROL OPERATION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-33
ELECTRICAL FAN CONTROL OUTLINE
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01-40-34
ELECTRICAL FAN CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . . 01-40-34
ELECTRICAL FAN CONTROL
OPERATION [LF] . . . . . . . . . . . . . . . . . . 01-40-34
STARTER CUT-OFF CONTROL
OUTLINE [LF]. . . . . . . . . . . . . . . . . . . . . 01-40-36
STARTER CUT-OFF CONTROL
BLOCK DIAGRAM [LF] . . . . . . . . . . . . . 01-40-36
01-40
01-40-1