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Document # 31-0008

LM2_Manual_1.4.doc

37

5.3.3

Wiring Analog Outputs

The analog outputs on the LM-2 are differential. As with the analog inputs, the negative
lead (-) must be connected to ground for the readings to be accurate. Below are the
three different ways the analog outputs of the LM-2 can be wired. If you are unsure
whether your analog input is differential or not you may wire the analog output as shown
in diagram 1.

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Содержание LM-2

Страница 1: ...ch the hot sensor Do not let a hot sensor touch a combustible surface Do not use the sensor with or near flammable liquids or gases Failure to heed these warnings may result in severe burns explosions or fires When installed in the exhaust the oxygen sensor MUST be connected and operating with the LM 2 whenever the car is running An un powered oxygen sensor will be quickly damaged when exposed to ...

Страница 2: ...s on the LM 2 27 4 8 Check and Clear Vehicle Trouble Codes with LM Programmer 28 4 9 OBD II Basics 29 5 Analog Cable 31 5 1 RPM Input 31 5 1 1 Enable Disable RPM 31 5 1 2 Configure RPM 31 5 2 Analog Inputs 34 5 2 1 Enable Disable Analog Inputs 34 5 2 2 Wiring Analog Inputs 34 5 3 Analog Outputs 35 5 3 1 Programming the analog outputs 35 5 3 2 Advanced output programming 36 5 3 3 Wiring Analog Outp...

Страница 3: ... with the unit Front Mode Button Press once to cycle through channel display screens Press and hold to enter menu Cancel Button Press to cancel out of menu or to stop recording Record Press once to record or press again to stop recording Press and hold to force a new log LCD Display Up Arrow Scroll through available channels Move through menu Enter Accept an entry in the menu screen Down Arrow Scr...

Страница 4: ...Document 31 0008 LM2_Manual_1 4 doc 4 Top Bottom SD Memory Card Slot USB Connector Sensor Input 2 Enabled with the Dual Channel version Analog Cable Sensor Input 1 OBD II Connector Power ...

Страница 5: ...y pressing the Mode button One Channel Two Channels Four Channels One Channel Line Graph One Channel Fill Graph 1 2 Status Bar The bottom edge of the screen is the status bar and will look something like this The left most portion is the current time which can be set via menu and is set automatically by LM Programmer ...

Страница 6: ...d trouble shooting tips Note If the LM 2 is a single channel model the second indication will be blank not an error code The next indicator R will appear when a RPM is selected for logging use see menus and b an RPM signal is detected Note when RPM is enabled but no RPM signal is detected this symbol will appear in lower case r The A indicator means that the 4 Analog Inputs are selected for loggin...

Страница 7: ...t When Mode is first pressed the following choices appear Display AFR or Lambda The factory default setting is AFR Calibrate Sensors Free Air Calibrate ALL O2 sensors connected will be calibrated RPM Enable Disable RPM and Configure RPM Analog Inputs Enable Disable Analog Inputs and Configure Inputs OBD II Configure Number of Channels 0 16 Channel Use Get Clear DTC codes Display in Metric Imperial...

Страница 8: ...pressing and holding Record or holding the record button on an external XD 16 The first instance will occur if devices are added or removed the MTS serial chain or if channels are enabled disabled on the LM 2 When a new file is created it will be given the day s date and a unique counter 07010800 d32 07010801 d32 Etc Note When the LM 2 is recording the display will inverse In the status bar an upp...

Страница 9: ... played back you can pres the Menu button to cycle through the different display screens and you may also press the Arrow buttons to change the displayed channels 6 To stop the playback you may press the Cancel button at any time or allow the playback to run it s course ...

Страница 10: ... connect both oxygen sensors to the unit at the same time to do the calibration simultaneously 2 Connect the LM 2 to the cigarette power plug with the provided cigarette power adapter 3 The sensor s will start warming up The LM 2 will display WXX where XX is the percentage of temperature reached Notice the status bar displaying a W 4 Next is the calibration procedure Press and hold the Mode button...

Страница 11: ...Any decent muffler or exhaust shop can do this for you The wide band oxygen sensor is then installed into the bung to take a reading Insert the plug into the bung when not in use The ideal position is between 10 00 and 2 00 position On NON CATALYTIC converter vehicles You have the option with non catalytic cars to also use an exhaust clamp as described below Use of a bung is the preferred method f...

Страница 12: ...EN SENSOR MUST BE CONNECTED AND OPERATING WITH THE LM 2 WHENEVER THE CAR IS RUNNING AN UN POWERED OXYGEN SENSOR WILL BE DAMAGED WHEN EXPOSED TO EXHAUST GAS IF NOT PROPERLY POWERED The maximum temperature of the sensor at the bung the sensor hexagon should not exceed 500 o C or 900 o F If these temperatures are exceeded in your application you should either install a double length bung one inch or ...

Страница 13: ...o Application daily driver tuned rich Calibrate before installation of new sensor Calibrate new sensor again after 3 month of use Thereafter calibrate twice a year or every 10 000 miles whichever comes first Race Application Calibrate before first installation of new sensor Calibrate once per race weekend For added sensor life we also recommend our optional double length bung part number 3764 Dyno...

Страница 14: ... complications 3 1 Installing software and Connecting the LM 2 to computer 1 Install the CD that came with your LM 2 in your personal computer 2 The installer will automatically start follow the prompts to install the software 3 Connect one end of the USB cable to the LM 2 and the other end to your computer 4 Power up the LM 2 5 Windows will now recognize the device and prompt the New Hardware Wiz...

Страница 15: ...Connect the LM 2 to your computer with the provided USB cable 2 Power up the LM 2 3 Launch LM Programmer The LM Programmer application can be launched from Start Programs LogWorks3 LM Programmer from the Windows task bar 4 Once connected the LM Programmer will display the current version of the firmware that is installed in the LM 2 Do not update the firmware if the versions are the same A firmwar...

Страница 16: ... may disconnect the unit from the computer and exit out of the software Note Performing a firmware upgrade to the LM 2 clears all calibration data The LM 2 will perform a sensor calibration on the next power up after the firmware upgrade Be sure to have the O2 sensor outside of the exhaust free air 3 3 Downloading Logs from Memory Card Note An SD memory card reader is necessary to retrieve logs fr...

Страница 17: ...Document 31 0008 LM2_Manual_1 4 doc 17 4 A window will pop up which will allow you to select the desired log from the memory card Click Open ...

Страница 18: ... it is somewhere just behind the bottom edge of the dashboard immediately in front of the driver but it may be in a relatively obscure place like hidden behind an ashtray If you are unable to locate the connector by inspection your best bet would be to either ask a mechanic familiar with the make and model vehicle or locate an online hobbyist enthusiast group devoted to your vehicle Here is a samp...

Страница 19: ...mum of 16 channels can be selected It is recommended to start off with 2 to 3 channels to evaluate the speed at which the ECU delivers data Press Enter 5 You will now be able to scroll through all available channels and make your selection Note If you are connected the unit will filter and only display the available channels available by the ECU Press Enter 6 Chose if the channel is Low or High Pr...

Страница 20: ...onnected Innovate Devices then the main dialog should appear 4 The Inputs tab allows you to set the number of MTS channels to generate 5 Click the Inputs tab Only the number of channels selected on the Protocol Channels page can be edited The available values for logging on the connected ECU are listed in the drop list for each Input Some vehicles will support larger lists than others 6 Hit the Pr...

Страница 21: ...eed The first is a log trace of one channel RPM from a 2001 Lexus Notice that the data appears steppy and based on the timeline appears to be updating about 6 times per second Next we have a log trace of 16 channels RPM MAF MAP TP you name it from a 2006 Saturn ...

Страница 22: ...s The Connection Speed ECU Responsiveness The Lexus in the first example is using ISO 9141 and 10 4K bits per second The Saturn is using ISO 15765 CAN at 500K bits per second So it is easy to understand the difference in performance However the responsiveness of the ECU also can be a significant factor Consider this log from a 2006 Pontiac GTO ...

Страница 23: ...probably best to assign channels only a few at a time and then select Program The ECU will disconnect reconnect with the new choices and then the overall sample rate of the current settings can be observed using the blinking vehicle light on the LM 2 It is then up to you the user to decide what is an acceptable balance 4 5 Set the Priority of OBD II Inputs Optional Next to each Input Selection on ...

Страница 24: ...r in a loop Since takes the ECU has certain amount of time to respond to each query the longer the list of channels the longer it takes to complete the loop Obviously the longer to takes to complete the loop the larger the time gap between each read of an individual value Now let s look at how Low Priority Values fit into this Instead of being read once each time through the loop only one Low Prio...

Страница 25: ...ovide four LM 2 channels that update at full MTS rates Even four channels are still very usable For example here is RPM SPARKADV ignition timing FUEL1_OL Open Loop Status and VSS Vehicle Speed Sensor But what would happen if we also added ECT IAT MAF and MAP If we left all our channels at normal priority some critical channels may not be fast enough for our purposes ...

Страница 26: ...e quickly and we are more concerned with some channels than others For example let s say we are primarily concerned with RPM SPARKADV and FUEL1_OL We d like VSS IAT ECT MAF and MAP but we do not care if they update slowly So we can mark those channels as low priority ...

Страница 27: ...me log 4 6 Check Vehicle Trouble Codes on the LM 2 1 To view your vehicle trouble codes press and hold the Mode button to go into the Configuration Menu Screen 2 Select OBD II and press the Enter button 3 Select Get DTC s A list if any of error codes will be displayed on the screen To see the specific meaning of the error code select it and click Enter Click Enter again to return to the list 4 Pre...

Страница 28: ...dialog box will appear indicating that the program is looking for connected Innovate Devices then the main dialog should appear 4 Click the tab labeled Trouble Codes Standard Trouble Codes are listed both with a number and a description Manufacturer specific codes will generally just appear as a number though sometimes the general category can be identified You can request that the ECU clear the p...

Страница 29: ...on the OBD II connector itself Pin Assignments 1 9 2 J1850 10 J1850 3 11 4 Chassis Ground 12 5 Signal Ground 13 6 CAN J2284 High 14 CAN J2284 Low 7 ISO 9141 K line 15 ISO 9141 L line 8 16 Battery Power Note Pins marked with are sometimes used for make model specific purposes Looking closely we can see that there are really three different electrical pairs each representing a different type of phys...

Страница 30: ...CUs support all PIDs but the LM 2 understands and converts over 100 of the most common ones see Appendix B for a complete list DTCs or Diagnostic Trouble Codes are as the name implies problems reported by the ECU Codes can be Standard or Manufacturer Controlled An example of a standard code would be P0051 This code means HO2S Heater Control Circuit Low Bank 2 Sensor 1 for all OBD II vehicles But P...

Страница 31: ...d to ground if a tach signal is not being registered Note Ignitions running a multi spark setup i e MSD 6AL must use the provided tach signal from the ignition box 5 1 1 Enable Disable RPM Enabling the RPM channel will allow you to display the channel on the LM 2 and log it on the SD memory card Disabling the channel will do the exact opposite 1 Press and hold the Mode button to go into the Config...

Страница 32: ...clamp on spark wire or power wire of COP system of 1 cylinder only for all cylinder numbers 2 1 2 Use also when using inductive clamp on spark wire or power wire of Waste spark coil of 1 cylinder only Waste spark system 1 coil for every 2 cylinders 3 1 1 2 3 4 2 4 5 2 1 2 5 6 3 6 8 4 7 10 10 8 12 12 9 Cylinder number and RPM calibrate number 2 Cycle and Rotary Engine Number of Cylinders 2 Stroke p...

Страница 33: ...Document 31 0008 LM2_Manual_1 4 doc 33 6 6 9 Once the selection is made press Enter You will be brought back to the main screen ...

Страница 34: ...s and press the Enter button 3 You will not have the option to Enable Disable the Analog Inputs 5 2 2 Wiring Analog Inputs The LM 2 s inputs are differential A differential input does not measure a signal relative to electrical ground Instead it measures the relative voltage between two signals That is it does not measure the signal in relationship to ground but in relationship to the signal It me...

Страница 35: ...ts The graph display is automatically scaled to the selected voltages For each output you can specify a minimum and maximum lambda value and the associated voltages Below the minimum and above the maximum lambda values the output voltages stay constant at the associated programmed voltage By selecting the use Air Fuel Ratio button you can program the curve by AFR instead of Lambda This does not ch...

Страница 36: ...put 1 and Analog Output 2 are programmed to output between 0 V for an AFR of 7 35 and 5 0V for an AFR of 22 39 They represent sensor 1 and sensor 2 respectively Other curves of course are easily programmable 5 3 2 Advanced output programming The Advanced button allows programming to set the analog out update speed and the voltage output during sensor Warm up and Error Condition The factory default...

Страница 37: ...ential As with the analog inputs the negative lead must be connected to ground for the readings to be accurate Below are the three different ways the analog outputs of the LM 2 can be wired If you are unsure whether your analog input is differential or not you may wire the analog output as shown in diagram 1 ...

Страница 38: ...ne For gasoline driven engines the theoretically optimal air fuel ratio for efficiency is 14 7 pounds of air for every pound of fuel At this ratio theoretically all available oxygen in the air combines with all available fuel This ratio is called the stoichiometric ratio Stoichiometric for different fuels are as follows Gasoline 14 7 LPG Propane 15 5 Methanol 6 4 Ethanol 9 0 CNG 17 2 Diesel 14 6 T...

Страница 39: ...n with 6 3 Vehicles with smog pumps Older fuel injected vehicles with a smog pump actually inject air into the exhaust stream to aid their catalytic converter in the burn up of unburned or partially burned fuels This additional air will make the exhaust look leaner than the engine is running For an accurate measure install the LM 2 sensor up stream of the outputs of the smog pump If this is not po...

Страница 40: ...lace of the OEM oxygen sensor In this case the meter s analog output signal will replace the OEM oxygen sensor s signal to the fuel injection computer Note Please review your analog output settings the configuration for a narrowband is 1 1 V for an AFR of 14 and 1 V for an AFR of 15 EFI equipped cars typically incorporate a narrow band oxygen sensor These sensors are typically 1 2 3 or 4 wire sens...

Страница 41: ...ires are heater power Ground and sensor element connection Generally they have 1 black wire and 2 white wires Connect the black wire from the EFI computer to analog output 1 of the meter Leave the other wires unconnected but make sure they cannot contact any metal parts or see above If the wiring colors are different then heater power can simply be determined by measuring the voltage on the wires ...

Страница 42: ...t turning the pot to the left and stop when you start registering a tach signal and the LM 2 displays an R on the status bar 6 9 OBD II connection diagnostic trace In the rare situation where the LM 2 is not able to connect to the vehicle s OBD II protocol creating a trace file will greatly aid in diagnosing the problem 1 Press and hold the Mode button to go into the Configuration Menu Screen 2 Se...

Страница 43: ... sec Packet Logging Speed 81 92 msec sample packet Sample Resolution 10 bits 0 5V at 0 1 resolution Software Supported OSs Windows 98 ME 2000 XP and Vista OBD II Specifications Number of Channels 16 max Supported protocols ISO 157650 CAN J1850PWM J1850VPW ISO 9141 ISO 14230 KWP2000 USB Specifications Protocol Version 2 0 Supported OSs Windows 98 ME 2000 XP and Vista Temperature Max Operating Tempe...

Страница 44: ...d to prevent damage and shipped charges pre paid along with proof of purchase and the return material authorization number to the Innovate repair location as instructed by Customer Service Innovate within a reasonable amount of time from its receipt of your product so shipped will ship to you at its option the repaired product or a new or reconditioned product of comparable or greater specified fu...

Страница 45: ...nitoring and is not connected to the J1962 connector in the standard Innovate Cable Also the unit can be powered via this connector for basic operation However the O2 sensor circuits are not powered when OBD II is used as the power source The O2 sensor s require the normal power connection 3 Analog Looking at the connector with the clip up pin 1 is the lower left PIN USE COLOR 1 Analog In 1 Black ...

Страница 46: ...M Black White Note All these inputs and outputs are differential That is the negative inputs must be connected to ground 4 Serial Out Pin Use 1 RX 2 TX 3 GND 4 GND 5 Serial In Pin Use 1 TX 2 RX 3 GND 4 MTS Sense 6 Inductive Clamp Pin Use 1 Coil 2 Coil 7 USB Pin Use 1 NC 2 D 3 D 4 NC 5 GND 8 Power Pin Use 1 3 GND 2 4 VBAT ...

Страница 47: ... Error 100 0 99 22 TP_R Throttle Position rel 0 0 100 0 TP_B Throttle Position B abs 0 0 100 0 TP_C Throttle Position C abs 0 0 100 0 APP_D Acc Pedal Position D 0 0 100 0 APP_E Acc Pedal Position D 0 0 100 0 APP_F Acc Pedal Position D 0 0 100 0 TAC_PCT Commanded Throttle 0 0 100 0 EVAP_PCT Commanded Evap Purge 0 0 100 0 EVAP_VP Evap Vapor Pressure Pa 8192 0 8191 0 AIR_UPS Secondary Air DNS UPS 0 0...

Страница 48: ...99 WO2S41 WideO2 Voltage 4 1 Volts 0 0 7 999 EQ_RAT42 WideO2 Equiv Ratio 4 2 lambda 0 0 1 999 WO2S42 WideO2 Voltage 4 2 Volts 0 0 7 999 WBEQ_RAT11 WB O2 Equiv Ratio 1 1 lambda 0 0 1 999 WBO2S11 WB O2 Voltage 1 1 mA 128 0 127 996 WBEQ_RAT12 WB O2 Equiv Ratio 1 2 lambda 0 0 1 999 WBO2S12 WB O2 Voltage 1 2 mA 128 0 127 996 WBEQ_RAT21 WB O2 Equiv Ratio 2 1 lambda 0 0 1 999 WBO2S21 WB O2 Voltage 2 1 mA...

Страница 49: ...in sensor 1 Inspect sensor cable for rips or tears 2 Replace sensor Error 6 Reference cell circuit open 1 Cable connector not fully seated 2 Damaged sensor cable 3 Damaged Sensor 1 Verify Sensor is fully seated into connector make sure it clicks 2 Inspect sensor cable for rips or tears 3 Replace sensor Error 7 General System error typically a software error Software error Reboot LM 2 by cycling po...

Страница 50: ...USB Cable P N 3813 2 LM 2 3 Bung and Plug P N 3735 4 O2 Sensor P N 3737 5 SD memory Card 6 Software CD 7 Sensor Cable P N 3810 8 OBD II Cable P N 3809 9 Analog Cable P N 3811 10 Cigarette Power Cable P N 3808 11 Carry Case Kit P N 3807 will contain two of these items ...

Страница 51: ...tions 6 8 Attenuating a Tach Signal 1 5 Playback 6 9 OBD II connection diagnostic trace and 3 3 Downloading Logs from Memory Card Added references for Inverse screen display in sections 1 3 and 1 4 1 3 9 22 08 Added Appendix F Kits Contents added calibration note to chapter 3 2 and added confirmation step to chapter 2 1 1 4 12 17 08 Added multi spark information in chapter 5 1 ...

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