MegaSquirt MS3 Manuals

Manuals and User Guides for MegaSquirt MS3. We have 1 MegaSquirt MS3 manual available for free PDF download: Hardware Manual

MegaSquirt MS3 Hardware Manual

MegaSquirt MS3 Hardware Manual (222 pages)

Megasquirt-3 series

Brand: MegaSquirt | Category: Control Systems | Size: 12 MB

Table of Contents

Table of Contents
2
1: Introduction
8
2: Megasquirt System Hardware
10
- Overview
  10
- Megasquirt Installation
  10
- Wiring Harness
  11
- Crank / Cam Inputs
  11
- Sensor Inputs
  11
- Outputs
  11
- Tuning Interface
  11
3: Wiring
12
- Best Practices
  12
  - Wire and Connector Choice
    12
  - Soldering or Crimping
    12
  - Re-Pinning the DB37
    12
  - Fusing
    12
  - 4-Pin Relay Pin-Out Note
    12
  - Relay and Accessory Power Routing
    12
- Grounding (Earthing) Schemes
  13
- Core Wiring Diagram
  14
  - Connectors
    14
  - Optional Connections
    15
  - Additional Internal Inputs/Outputs
    15
  - Relay Board
    19
- Inputs
  21
  - Crank and Cam Tach Inputs
    21
  - MAP (Manifold Absolute Pressure) Sensor
    21
  - IAT/MAT (Intake/Manifold Air Temperature) Sensor
    23
  - CLT (Coolant Temperature) Sensor
    26
  - TPS (Throttle Position Sensor)
    26
  - O2 (Oxygen) Sensor / Lambda Sensor
    27
  - MAF (Mass Air Flow) Sensor
    29
  - Flex / Switch Input
    34
  - Spare Analogue (ADC) Inputs
    35
  - Switch Inputs
    36
  - B/LD Boot Jumper
    37
  - CAN Comms
    38
  - Knock Sensor
    39
  - Speed Sensor Inputs
    40
  - EGT Input
    41
- Outputs
  42
  - Fuel Injector Outputs
    42
  - Ignition Outputs
    42
  - Fuel Pump Output
    42
  - Idle Valve
    43
  - Tacho Output
    47
  - Other Relay Outputs
    48
  - Boost Control Output
    48
  - Alternator Control Wiring
    49
- Bench Test Wiring
  58
  - Minimal Connection
    59
  - Jimstim Connection
    59
4: Fuel System
60
- Introduction
  60
  - Existing EFI Vehicle
    61
  - Retro-Fit EFI Vehicle
    61
- Single Fuel Pump
  61
- Low Pressure / High Pressure - Twin Pump
  61
- Wiring the Fuel Pump
  62
- Fuel Line
  62
- Fuel Filter
  63
- Fuel Pressure Regulator
  63
- Injector Installation
  64
- Fuel Rails
  64
- Fuel Injectors
  64
  - Injector Size
    64
  - Injector Impedance and Batch-Fire Wiring
    66
  - Staged Injection
    69
  - Sequential Injection
    69
5: Ignition System - Fundamentals
70
- Safety Notes
  70
- Crank and Cam Tach Inputs
  70
  - Coil Negative Input
    71
  - VR (Magnetic) Sensor Input
    72
  - Hall Sensor Input
    73
  - Hall Sensor Input (Built-In Pull-Up)
    77
  - Gear-Tooth Sensor Input
    79
  - GM LS 24X Crank/Cam Sensors
    80
  - GM LS 58X Crank/Cam Sensors
    80
  - Optical Sensor
    81
  - Distributor Points Input
    81
  - Combined Ignition Module (TFI, EDIS, HEI, GMDIS)
    82
  - Nissan CAS/ GM Optispark
    82
  - 4G63 / 6G72
    84
  - Mitsubishi CAS with Aftermarket Disc
    84
  - Adding a Cam Sensor Input
    84
- Ignition Outputs
  87
  - Building Ignition Outputs
    88
  - Logic Coils
    92
  - Amplifiers (Ignitor, Power Transistor, Ignition Module)
    100
  - High Current Coils
    105
  - CDI Modules (E.g. MSD, Crane Etc.)
    106
  - Mazda Rotary Ignition Wiring
    107
  - Toyota DLI Ignition Wiring
    108
6: Ignition System - Specific Operating Modes
110
- Coil Negative for Fuel Only
  112
- Distributor Pickup
  113
- Ford TFI
  119
- Gm Hei7
  121
- Gm Hei8
  123
- Dual Sync Distributor
  124
- Ford EDIS
  125
  - System Components
    125
  - ECU Wiring
    126
  - Module Wiring
    127
  - Trigger Wheel and VR Sensor
    129
  - Checking the Timing
    133
- GM DIS (for Reference Only)
  133
- Toothed Wheel
  134
  - Wheel Combinations
    134
  - Terminology Notes
    136
  - Wheel Naming
    136
  - Retrofit Install
    137
  - Existing Install
    138
  - Missing Tooth Crank Wheel
    138
  - Missing Tooth Cam Wheel
    140
  - Missing Tooth Crank Wheel and Single Tooth Cam Wheel
    140
  - Missing Tooth Crank Wheel and Polled Cam Wheel
    143
  - Nippondenso CAS
    147
  - Non-Missing Tooth Crank Wheel with One Cam Tooth
    152
  - Mitsubishi CAS with Aftermarket Disc - Single Coil / Wasted Spark
    155
  - Mitsubishi CAS with Aftermarket Disc - Coil-On-Plug
    156
  - Other Wheel Arrangements
    157
  - Example: Ford Zetec
    157
- Neon/420A
  158
- Ngc)
  160
- Miata 99-05
  163
- Subaru 6/7
  164
- 6G72
  164
- IAW Weber
  165
- Mitsubishi CAS 4/1
  166
- Mitsubishi 4G63 (and Miata)
  166
- Twin Trigger
  168
- Chrysler 2.2/2.5
  169
- Renix 44-2-2 (66-2-2-2)
  169
- Suzuki Swift
  169
- Suzuki Vitara 2.0
  170
- Daihatsu 3Cyl
  170
- Daihatsu 4Cyl
  170
- Vtr1000
  170
- Rover#1
  171
- Rover#2
  171
- Rover#3
  171
- Gm7X
  172
- Qr25De
  172
- Honda RC51
  172
- Gm Ls1 (24X)
  172
- Gm Ls2 (58X)
  174
- Yzf1000
  175
- Hd 32-2
  176
- Miata 36-2
  176
- Fiat 1.8 16V
  176
- GM Optispark
  177
- Nissan SR20
  178
- Nissan RB25
  178
- Honda Acura V6
  178
- Vq35De
  178
- Jeep 2000
  178
- Jeep 2002
  179
- Zetec VCT
  179
- Flywheel Tri-Tach
  179
- 2JZ Vvti
  180
- Honda TSX/D17
  180
- Mazda6 2.3 VVT
  181
- Viper V10 (Gen 2)
  181
- Viper V10 (Gen 1)
  181
- Honda K24A2
  182
7: Throttles
183
8: Optional Hardware
184
9: Example Wiring
184
- Expansion Boards
  184
- Nitrous
  184
10: Further Information
186
11: Appendix A Schematics
186
- Component Pinouts
  186
12: Appendix B: Junkyard Guide to Finding EDIS
198
- North America - EDIS4
  198
- Europe - EDIS4
  199
- Europe - EDIS6
  201
- Europe - EDIS8
  201
- Europe - 36-1 Trigger Disc
  201
- Europe - VR Sensor
  202
- World - Coilpack(S)
  202
13: Appendix C: V3.0 Board Assembly
203
- Introduction
  203
- Build Choices
  203
- Assembly
  204
- Jumper Wires
  211
- Testing Stage
  213
- Bill of Materials (Parts List)
  218
14: Revision History
222

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