Motec M84 User Manual

MoTeC M84 User’s Manual Contents Introduction ... 1Additional Documentation ..

8 Overview MoTeC Setup Parameters The Setup Parameters allow the ECU to be configured for almost any engine. The Setup Parameters include Number of

MoTeC Overview 9 Digital Input Functions The following functions are setup in the Digital Input Functions menu • Speed Measurement • Period Meas

10 Overview MoTeC

MoTeC Software 11 MoTeC Software The following software is available for the M84 ECU. ECU Manager: Used for calibration, setup, diagnostics, out

12 Software MoTeC The main software required is the ECU Manager software, if Data Analysis is required then the i2 software should also be installed

MoTeC Software 13 Unloading the Logged Data The logged data can be extracted by connecting the MoTeC UTC or CAN Cable to the ECU and selecting Util

14 Software MoTeC

MoTeC Installation 15 Installation Throttle Position or MAP Load Sensing The load point for the fuel and ignition calibration tables may be based o

16 Installation MoTeC sensor is moved or replaced. It is very important to set these parameters with the butterfly in exactly the same place each ti

MoTeC Installation 17 The plenum take off point should be at a position that best represents the average manifold pressure and has minimal pressure

Calibration ... 43Warning Alarms ...

18 Installation MoTeC Trigger Sensors (REF & SYNC) The trigger sensors supply the necessary timing information to the ECU so that it knows when

MoTeC Installation 19 Exhaust Gas Sensor (Lambda Sensor) The ECU may optionally use a wideband exhaust gas sensor for data logging or closed loop c

20 Installation MoTeC Temporary wiring is likely to cause problems: use a proper eyelet terminal that is securely crimped to the ground wire. Studs

MoTeC Installation 21 Wire Splicing Preferably use a crimp splice. If soldering a wire splice, wire movement near the joint must be avoided otherwi

22 Installation MoTeC Swirl Pot The swirl pot (header tank) maintains a reserve of fuel to avoid fuel starvation to the engine during cornering and

MoTeC Installation 23 Fuel Lines The fuel feed lines must be high pressure type and should be at least 8mm (5/16 inch) diameter. The return lines s

24 Installation MoTeC If Using Throttle Position Load Sensing Leave the regulator port open to the atmosphere, unless the MAP sensor is connected to

MoTeC Installation 25 will operate correctly at 2.5 bar (29 psi) and some will operate up to 5 bar (73 psi). Current Different injectors require di

26 Installation MoTeC HEI Distributed High Energy Inductive (HEI) distributed ignition systems are generally limited to about 8000 RPM on an 8 cylin

MoTeC Installation 27 The button must be a wide tip type to cater for a wide range of advance points since the advance is changed electronically ra

MoTeC Introduction 1 Introduction Thank you for purchasing a MoTeC Engine Management System. This manual will help you understand the installation

28 Installation MoTeC

MoTeC Initial Setup 29 Initial Setup Before attempting to start the engine the setup parameters must be correct. Use the MoTeC ECU Manager software

30 Initial Setup MoTeC Note that the trigger sensor type (Hall / Mag, Edges etc.) must be setup in the Sensor Setup screens. Ignition Ignition Type

MoTeC Initial Setup 31 Refer to the ECU Manager help screens for details. Other Functions Ensure any other functions such as Boost Control, Traction

32 Initial Setup MoTeC

MoTeC Initial Calibration 33 Initial Calibration Before attempting to start the engine the calibration tables should be initialised to sensible val

34 Initial Calibration MoTeC Fuel - MAP Check the Fuel - MAP compensation table. The fuel must be increased by 100% every 100 kPa increase in air p

MoTeC Initial Calibration 35 Ignition - Air Temp Check the Ignition - Air Temp compensation table. Typically the following table can be used : -20

36 Initial Calibration MoTeC

MoTeC Initial Starting Procedure 37 Initial Starting Procedure The ECU Manager software should be used to assist during starting. The ECU Manager

2 Introduction MoTeC

38 Initial Starting Procedure MoTeC Test the Sensors Before starting the engine, test that all sensors are giving sensible readings by viewing the

MoTeC Initial Starting Procedure 39 Check that no REF or SYNC Diagnostic Errors occur during constant cranking. Diagnostic errors may occur as cra

40 Initial Starting Procedure MoTeC If the engine won’t start • Check for correct fuel pressure. • Check for fouled plugs. • Re-check for diagn

MoTeC Initial Starting Procedure 41 Injector Errors Open The Injector is open circuit - check the wiring. Short The Injector is short circuit -

42 Initial Starting Procedure MoTeC SYNC Error The SYNC signal has occurred before expected. Possible causes: • A bad SYNC signal has caused ext

MoTeC Calibration 43 Calibration The Calibration Tables determine how the output devices should be controlled for various sensor readings. For examp

44 Calibration MoTeC To insert or delete sites use the Tools menu (press the F9 key). When sites are inserted or deleted, the calibration tables may

MoTeC Calibration 45 closest to the current engine operating point. The Quick Lambda feature may only be used if the ECU is directly measuring the L

46 Calibration MoTeC The Quick Lambda feature may also be used from the Ignition Main Table, which allows ignition timing adjustments to be made whi

MoTeC Calibration 47 Data Logging & Road Testing The calibration must be verified on the road. This is best done by logging the air fuel ratio a

MoTeC Overview 3 Overview The MoTeC M84 ECU is a powerful and compact programmable Engine Control Unit (ECU). The M84 is characterised by the fol

48 Calibration MoTeC

MoTeC ECU Manager Software 49 ECU Manager Software Introduction The following is an overview of the main concepts of the ECU Manager software. More

50 ECU Manager Software MoTeC Online Help Online help is available in two forms: Context sensitive help is available by pressing F1 or clicking on

MoTeC ECU Manager Software 51 ECU Status: Connected or NOT Connected (if the ECU is connected the ECU firmware version is also shown). If the ECU i

52 ECU Manager Software MoTeC Matching Versions The version of ECU Manager and the version of the firmware in the ECU must match in order to be able

MoTeC ECU Manager Software 53 Screen Layouts The screen layouts are completely user definable and may be optimised to suit the user’s preference, t

54 ECU Manager Software MoTeC To change the properties (settings) of any object, right click on the object and select Properties. To delete an objec

MoTeC ECU Manager Software 55 To do this select Reverse Y-Axis on the Tools menu or press the Y key. Making Adjustments On Line / Offline Changes m

56 ECU Manager Software MoTeC Selecting the Adjust Table Once a file or the ECU has been opened, the appropriate table or setup screen may be select

MoTeC ECU Manager Software 57 The cursor may be moved using the arrow keys, or by pressing the Spacebar which will automatically move the cursor to

4 Overview MoTeC ECU Inputs & Outputs The ECU analyses signals from the sensors, then controls the Fuel Injectors, Ignition System and other aux

58 ECU Manager Software MoTeC Up / Down Adjustment Up or Down adjustments may be made to the selected table value using the PgUp and PgDn keys. Fast

MoTeC ECU Manager Software 59 pressing the F8 key. The adjustment is made to the value closest to the current engine operating point. This feature

60 ECU Manager Software MoTeC Tools The Tools Menu allows selection of various functions as listed on the menu below. The Tools Menu may also be d

MoTeC ECU Manager Software 61 Compare Mode shows the difference between the current file and the selected comparison file. When Compare Mode is tur

62 ECU Manager Software MoTeC Quick Lambda + Copy Up & Right As for Quick Lambda except that the new value is copied to the sites immediately ab

MoTeC ECU Manager Software 63 Note that it may be necessary to use the Backspace key to mark the desired points with an *. Copy Vertical Column Rig

64 ECU Manager Software MoTeC Set with * Sets an * on the current site whether or not the engine is currently at that site. Copy Table from Another

MoTeC ECU Manager Software 65 View Screen The View Screen may be shown by pressing the V key or by selecting the desired view page from the View me

66 ECU Manager Software MoTeC Testing the ECU Outputs The ECU Outputs (Fuel Injectors, Ignition Outputs and Auxiliary Outputs) may be tested by sele

MoTeC ECU Manager Software 67 Keyboard Reference PgUp Adjust Up PgDn Adjust Down Ctrl+PgUp Fast Adjust Up Ctrl+PgDn Fast Adjust Down Shift+PgUp

MoTeC Overview 5 The Throttle Position, Manifold Pressure, Air Temp and Engine Temp are used as inputs to the various calibration tables. Optional

68 ECU Manager Software MoTeC

MoTeC Appendices 69 Appendices Appendix A: General Specifications Physical Case Size: 147mm x 105mm x 40mm (5.8in x 4.1in x 1.6in) Weight: 0.50 kg

70 Appendices MoTeC Appendix B: Sensor Supplies Maximum Current 5V ENG Sensor Supply: 0.20 Amps Max 5V AUX Sensor Supply: 0.15 Amps Max 8V ENG Se

MoTeC Appendices 71 Appendix C: Input Characteristics Analogue Voltage Inputs Suitable for: Potentiometers, voltage output sensors and Variable re

72 Appendices MoTeC Trigger Levels: Programmable 0 to 15V Hysteresis: Individually programmable high and low levels. Lambda Inputs Wideband Sensor T

MoTeC Appendices 73 Appendix D: Auxiliary Output Characteristics The following tables list the characteristics for the Auxiliary Outputs. Output L

74 Appendices MoTeC Appendix E: Ignition Output Characteristics Source Current: 20mA (Single Coil / Coil per Plug) / 40mA (Wasted Spark) Source Vol

MoTeC Appendices 75 Appendix F: Injector Output Characteristics The Injector outputs can operate in two modes: Peak and Hold mode and Saturated mod

76 Appendices MoTeC Appendix H: Wire Specifications M22759/16 Wire Ratings (For Various Wire Gauges) Insulation Material Tefzel Conductor Tin Plat

MoTeC Appendices 77 Appendix J: CAN Wiring - Multiple Devices The CAN bus should consist of a twisted pair trunk with 100R (0.25Watt) terminating r

6 Overview MoTeC CAN may be used to communicate with the MoTeC ADL & SDL Dash Loggers, PLM, LTC and SLM. RS232 Serial Communications Used for re

78 Appendices MoTeC Appendix K: CAN Bus Wiring - Single Device When a single device (such as an ECU) is connected to the CAN bus the wiring scheme s

MoTeC Appendices 79 Appendix L: Pin list by Function M84 Pin No Abbrev Description Battery A26 VBAT Battery Positive A10,A11 GND Battery N

80 Appendices MoTeC Pin No Abbrev Description Analogue Voltage Inputs A14 AV1 Analogue Voltage Input 1 A15 AV2 Analogue Voltage Input

MoTeC Appendices 81 Appendix M: Wiring Schematic

82 Notes MoTeC

MoTeC Notes 83

84 Notes MoTeC

MoTeC Overview 7 Calibration & Setup Calibration Tables The Calibration Tables determine how the output devices should be controlled for variou