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ECU/EMS
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OPERATION PARAMETERS
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EMS SCHEMATIC
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SENSOR LIST
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CONTROL SYSTEMS
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Standard ECU Systems
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Power-train Control Module [PCM] SENSOR INPUTS: MAF/MAP- Intake air density VR TACHO- Engine RPM CR POS- Crankshaft Angle IDLE SET-Idle Speed THROTTLE POS KNOCK TRANSMISSION ECU CONTROL OUTPUT: A/F Ratio- Inj. Timing/Pr Ig. Timing Idle Speed Set VVT Transient Fueling Gear Control Ig. Cutoff Rev Limit Turbo Waste-gate limit
![Power-train Control Module [PCM] SENSOR INPUTS: MAF/MAP- Intake air density VR TACHO- Engine RPM CR POS- Crankshaft Angle IDLE SET-Idle Speed THROTTLE POS KNOCK TRANSMISSION ECU CONTROL OUTPUT: A/F Ratio- Inj.](http://images.slideplayer.com./35/10475912/slides/slide_8.jpg "Timing/Pr Ig. Timing Idle Speed Set VVT Transient Fueling Gear Control Ig. Cutoff Rev Limit Turbo Waste-gate limit.")
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ADVANTAGES Ease of Control Adaptable to multiple scenarios Very low cost compared to mechanical systems Occupy lesser space-compact engine bay Less complicated design Zero wear
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UNIQUE FEATURES SERVICE SETTING: List of service parameters Range of acceptable values OR time limits (modifiable) Service Indicator Light Program reset OBD- On Board Diagnostics Self detection of possible faults Sensor scanning subsystems Fault codes stored in ECU memory All cars after 1996 OBD-II compliant
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AUTO TUNING Software on ECU known as a map New maps can be loaded to ECU [ process known as re- mapping or flashing] Complete access to parameters such as fuel injection quantity, boost pressure, ignition timing, idle speed setting No costly equipment required, laptop, Tuner EMS s/w & ODB cable Plug & play ECU’s with multiple maps available.
![AUTO TUNING Software on ECU known as a map New maps can be loaded to ECU [ process known as re- mapping or flashing] Complete access to parameters such as fuel injection quantity, boost pressure, ignition timing, idle speed setting No costly equipment required, laptop, Tuner EMS s/w & ODB cable Plug & play ECU’s with multiple maps available.](http://images.slideplayer.com./35/10475912/slides/slide_15.jpg "AUTO TUNING Software on ECU known as a map New maps can be loaded to ECU [ process known as re- mapping or flashing] Complete access to parameters such as fuel injection quantity, boost pressure, ignition timing, idle speed setting No costly equipment required, laptop, Tuner EMS s/w & ODB cable Plug & play ECU’s with multiple maps available.")
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