ProScan v1.4 User`s Manual
Contents
1. 5 Do NOT disturb the cable connections or turn the vehicle off while using the ProScan software Always exit the ProScan software before turning the key off or disconnectina the cables Serial port being used by ProScan COMI X Connect Disconnected Before you can use ProScan to analyze a vehicle you must first go through an initialization procedure This process obtains a list of supported sensors from the vehicle and initializes the electrical converter Make sure that you select the correct serial port This will typically be COMO1 but may vary depending on your setup If you are using a USB to RS232 converter simply select the serial port that is being emulated by the USB to RS232 drivers Once everything is ready you may click the Connect button The progress will be updated in the status box It should not take more than a few seconds If successful the status bar at the bottom of the ProScan window will display Connected 11 Diagnostic Trouble Codes Diagnostic trouble codes are alphanumeric codes that are used to identify a problem that is present on any of the systems that are monitored by the on board computer PCM OBD II diagnostic codes are composed of five characters one letter followed by 4 digits The first character is a letter It identifies the main system where the fault originated The table to the right defines each system B Body O P __Powertrain _ _ _ The seco2. to the right Then connect the other end of the OBD II cable on the right in the picture above to the vehicle s under dash connector pictured below It will be located within 1 meter 3 feet of the steering wheel You should now have your computer connected to the vehicle via the cables and converter You can go ahead and start the vehicle at this time On some vehicles you can connect and analyze sensor data without starting the engine but the key must be turned to the ON position 10 Setting Up and Using ProScan cont Once you have your computer connected to the vehicle via the cables and converter you can launch the ProScan software either by double clicking the desktop shortcut or by selecting ProScan from the Start menu ProScan should appear as in the screenshot below ProScan v1 4 kan al Help Connect Plot Sensors Read Sensors Trouble Codes Performance 1 Attach the supplied OBD II cable to your vehicle s Status OBD II connector It is a 16 pin connector that is required by law to be within 3 feet of the steering wheel 2 Attach the other end of the OBD II cable to the appropriate converter for the vehicle you are testing 3 Attach the supplied serial cable to the other side of the converter and attach the opposite end of the serial cable to your computer s 9 pin serial port 4 Turn the key to the ON position or go ahead and start the vehicle if you intend to analyze while driving
3. you intend to use ProScan Windows XP already has the NET Framework installed but it may need to be upgraded Users of earlier versions of Windows will need to install the NET Framework It can be downloaded free of charge from Microsoft but it is also included on the CD The user s manual is a PDF file which requires Adobe Acrobat Reader This prerequisite can also be installed directly from the CD Overview of the ProScan Hardware cont Electrical Converter VPW pictured OBD II Interface Cable Serial Cable Installing the ProScan Software The ProScan installation program should launch once the CD is inserted If not the setup program is located in the root directory of the CD and the filename is setup exe Follow the simple instructions to complete the installation process When finished you will have a shortcut to ProScan on your desktop and on your Start menu Setting Up and Using ProScan In order to use ProScan the vehicle must support the OBD II standard and you must use the appropriate converter VPW PWM or ISO in order to communicate properly The converter is the black box that attaches between the vehicle and the computer The converter type is clearly indicated on the label First assemble the two cables and the appropriate converter as shown in the picture above Then connect the other end of the serial cable on the left in the picture above to your computer s serial port as shown
4. ProScan v1 4 User s Manual http www MyScanTool com Table of Contents A thank you note from the author OBD II background information VPW PWM and ISO explained Determining the protocol from an OBD II connector Overview of the ProScan hardware Installing the ProScan software Setting up and using ProScan Diagnostic Trouble Codes DTC Vehicle Sensor Data Real Time Sensor Plots Performance Analysis FAQ USB upgrades palm support etc Troubleshooting Legal 7 8 10 11 12 14 15 16 17 18 19 22 23 Thank You Thank you for purchasing the ProScan automotive diagnostic and performance analysis tool The beauty of this tool is that it is implemented entirely in software thus making the cost very cheap compared to sophisticated electronic scan tools that are usually limited in features by their hardware design ProScan is an advanced vehicle analysis tool that can easily be upgraded with better features and the possibilities are virtually endless My goal is to turn ProScan into the best all around automotive analysis tool in the world In order for this to happen I need to hear your feedback Please contact me and let me know exactly how you feel about ProScan Tell me about the features you like and dislike and describe features that you would like to see implemented My promise to you is that I will work my hardest to transform ProScan into the ultimate vehicle analysis tool for your specific needs Thank you Dav
5. ate with the vehicle s OBD II system To verify this type 0101 and press ENTER You should receive a response such as this 41 01 81 07 65 04 The numbers will vary but it should begin with 41 01 If you received a similar response then you can conclude that the hardware is working properly If you did not receive a response or if you received an error message then the converter is having problems communicating with your vehicle This could be because the converter is of the wrong protocol VPW PWM or ISO it could be a malfunctioning converter or it could be a problem with your vehicle s OBD II system 22 Legal ProScan software is protected by copyright law Unauthorized reproduction or distribution of ProScan or any portion of it may result in severe civil and criminal penalties You should never attempt to use ProScan while operating a moving vehicle Analysis of a moving vehicle should only be conducted by a passenger of the vehicle The performance analysis features of ProScan are to be used in law abiding fashion MyScanTool com will not be liable or have any responsibility of any kind for any loss or damage that you incur while using ProScan to analyze a vehicle Copyright 2004 MyScanTool com All rights reserved No part of this publication may be reproduced stored in a retrieval system or transmitted in any form or by any means electronic mechanical photocopying recording or otherwise without the pri
6. b and the following screen will appear ProScan v1 4 m Help Connect Plot Sensors Read Sensors Trouble Codes Performance Trouble Codes Found Description of Trouble Code Trouble Codes Found O Check Engine Light OFF Refresh Trouble Codes Clear Trouble Codes from Yehicle Disconnected Click the Refresh Trouble Codes button to request a list of stored codes from the vehicle If any codes are found they will be displayed in the list on the left To view a detailed description of the trouble code simply click on the code in the list If ProScan has a definition for the code it will be displayed Otherwise you will need to do an online search for the definition Once you find the cause of the DTC and repair it you need to clear the codes from the vehicle This will also reset your check engine light 14 Vehicle Sensor Data Reading the sensors on a vehicle is a breeze Simply click the Vehicle Sensor Data button and a list of all supported sensors for your vehicle is displayed To read a sensor just click on the sensor in the list and click the Read the Selected Sensor button The value will be displayed in both English and metric units if applicable ProScan v1 4 m m amp Help Connect Plot Sensors Read Sensors Trouble Codes Performance M Sensor Data Long Term Fuel Trim Bank 2 Long Term Fuel Trim Bank 4 IAT 80 C Fuel Rail Pressure Gauge Intake Manifo
7. id A Gore dvstate runbox com OBD II Background Information All US vehicles from 1996 and up are required to be OBD II compliant OBD stands for On Board Diagnostics and the Roman numeral for two indicates that it is the second generation of the OBD protocol All modern vehicles are controlled primarily by an on board computer The computer monitors various sensors and uses the collected data to control the state of the vehicle If a potential problem is found by one of the sensor readings the computer will store a Diagnostic Trouble Code DTC in memory When a DTC is stored the vehicle s check engine light will illuminate Then the problem can be easily discovered by using an OBD scan tool to read the stored DTC s Once the problem is identified it can be repaired and then the OBD scan tool can be used to clear the DTC s from memory thus resetting the check engine light ProScan provides a full featured OBD II scan tool and a whole lot more VPW PWM and ISO Explained The OBD II standard supports three different communication protocols 1 VPW Variable Pulse Width Modulation 2 PWM Pulse Width Modulation 3 ISO International Standard The OBD standard remains the same on every vehicle but there are three different methods for communicating the information VPW Most GM vehicles use the VPW protocol This includes Chevrolet Pontiac GMC Oldsmobile Cadillac Buick and a few other manufacturers PWM The PWM protocol i
8. in 16 is positive from the battery In addition to pins 4 5 and 16 the connector will have one or more pins You can use the pin positions to determine which protocol is used on the vehicle Must have the following pins 4 5 16 2 10 VPW Must have the following pins 4 5 16 2 Note Not pin 10 ISO Must have the following pins 4 5 16 7 Note Pin 15 is optional Overview of the ProScan Hardware Each ProScan kit includes the following Qty 1 1 3 Description OBD II Interface Cable This cable attaches to the vehicle s 16 pin OBD II connector The other end attaches to the appropriate electrical converter Electrical Converter The electrical converter is a small black box with connectors on opposite ends The converter s job is to translate the vehicles OBD II signal into a signal that is usable by a computer There are three different OBD II signals VPW PWM and ISO so there are three different electrical converters When ordering a ProScan kit you specify which converter s you need Serial Cable This cable attaches to the other end of the converter being used The opposite end of the cable goes to the serial port of your computer ProScan CD ROM The CD contains the following ProScan software NET Framework User s manual Adobe Acrobat Reader The ProScan software is developed using Microsoft s new NET technology This means that the NET Framework must be installed on the computer
9. ld Absolute Pressure Intake Air Temperature 80 C 176 F Engine RPM Vehicle Speed Sensor Ignition Timing Advance for 1 Cylinder Intake Air Temperature Air Flow Rate from Mass Air Flow Sensor Absolute Throttle Position Commanded Secondary Air Status Oxygen Sensor Output Voltage Bank 1 Se Short Term Fuel Trim Bank 1 Sensor 1 Oxygen Sensor Output Voltage Bank 1 Se Short Term Fuel Trim Bank 1 Sensor 2 a Oxygen Sensor Output Voltage Bank 2 Se Short Term Fuel Trim Bank 2 Sensor 1 Oxygen Sensor Output Voltage Bank 2 Se Short Term Fuel Trim Bank 2 Sensor 2 Oxygen Sensor Output Yoltage Bank 3 Sev Read the Selected Sensor Connected 15 Real Time Sensor Plots Select the Plot Sensors tab and you ll be presented with a window containing two empty graphs The drop down combo boxes above each graph list every sensor supported by the vehicle To plot a sensor continuously in real time just select the sensor in the combo box The sensor will be polled continuously and plotted in real time If you want to disable one of the graphs simply choose Do Not Monitor ProScan v1 4 aoe Help Connect Plot Sensors Read Sensors Trouble Codes Performance Do Not Monitor T Fuel Rail Pressure Gauge Intake Manifold Absolute Pressure Engine RPM Vehicle Speed Sensor Ignition Timing Advance for 1 Cylinder Intake Air Temperature Air Flow Rate fr
10. nce they are calculated You can abort the run at any time When you are ready to try again just click the Reset button to clear the timeslip and then Stage once you are ready 17 Frequently Asked Questions 1 My laptop does not have a serial port Does ProScan work with USB Yes Since version 2 0 ProScan has supported USB In order to use ProScan with a USB port you will need to buy a USB to RS232 serial converter You can find one at any computer store for around 30 2 Is ProScan available for Palm OS or Windows CE ProScan is currently being ported to run on Palm OS A Palm OS version should be available in January 2004 There are no intentions for Windows CE development at this time 18 Troubleshooting If you are having a problem with ProScan you can use this procedure to determine the cause of your problem Step 1 Make sure that your vehicle is not running and that the key is in the OFF position Connect the OBD II cable to your vehicle and then to the appropriate converter Then connect the 25 pin connector of the serial cable to the converter and plug the 9 pin connector into your computer s serial port Now that you have a physical connection between your vehicle and your computer it is time to troubleshoot the converter and your vehicle Step 2 Launch the program HyperTerminal on your computer It should be located at Start gt Programs gt Accessories gt HyperTerminal HyperTerminal i
11. nd character is a numeric digit This identifies the type of code Generic The definition for the code is defined in the EOBD normally POxxx OBDII standard and will be the same for all manufacturers Manufacturer specific Where manufacturers feel that a code is not available normally P1xxx within the generic list they can add their own codes The definitions for these are set by the manufacturer In general codes that begin with PO are Generic codes whereas codes that begin with P1 are manufacturer specific The full breakdown of the code groups is shown below POxxx Generic BO xxx Generic P34xx P39xx Generic S hassis codes Oxxx Generic Oxxx Generic 1xxx Manufacturer specific 2xxx Manufacturer specific C3xxx Generic 3xxx Generic 12 Diagnostic Trouble Codes cont The third digit of a DTC defines the specific system or sub system within the car where the problem is located Third digit System or sub system uel and Air Metering uel and Air Metering injector circuit malfunction only gnition System or Misfire Vehicle Speed Control and Idle Control System omputer Output Circuits 8 ransmission 1 2 3 4 Auxiliary Emission Control System 5 6 7 13 Diagnostic Trouble Codes cont If your vehicle s check engine light is on then you need to run the ProScan Trouble Codes tool to find the problem Simply start ProScan connect to the vehicle click the Trouble Codes ta
12. om Mass Air Flow Sensor Absolute Throttle Position 0 0 0 0 Do Not Monitor Connected 16 Performance Analysis ProScan v1 4 _ a Help Connect Plot Sensors Read Sensars Trouble Codes Performance stage Reset 00 00 Yehicle Settings Vehicle eight Pounds Tire Radius 002 Feet Calculate Timeslip 60 Time 0 to 60 MPH 1 8 Mile ET 1 8 Mile Speed 1000 Time 1 4 Mile ET 1 4 Mile Speed Peak Horsepower Peak Torque Disconnected The Performance Analysis feature of ProScan is something you won t find on any other scan tool The statistics are very accurate as long as your speed sensor is accurate and you don t have much wheel spin during your run To analyze your vehicle s performance simply start the Performance Analysis tool by clicking the Performance tab Make sure that your car is on a level surface and that there is no traffic on the road Stop the vehicle completely and click the Stage button when you are ready You can ignore the weight and tire radius settings because the horsepower and torque calculations are not yet implemented The top two rows of yellow lights will illuminate and after a short delay 2s the lower three rows of yellow lights will sequentially illuminate and then the green light will turn on The goal is to launch perfectly on the green light As you make your run the numbers on the timeslip will automatically show up o
13. or written permission of MyScanTool com 23
14. s a program that is included with Windows but it may not be installed by default If you do not have HyperTerminal installed it can be found here Microsoft Hyperterminal Install Page 19 Troubleshooting cont Pe te w Cd Neste hee Dies az oles E Co c When asked for a name for the connection you can simply enter anything that you wish On the left you can see that I chose blah Fu fat we Ga hne wu Pyu Enie detak Se thee phone run e that you ment to chat Tesiyhegon anien z You will then need to specify that you want to connect via the serial port This will probably be COMI or COM2 depending on your computer configuration 20 Troubleshooting cont bioh Hyper Verret EE EE EEE alo xi fi Cot w Cel Trade te Dis ol 3 ola COM port Properties Bits per second 9600 Data bits 8 Parity None Stop bits 1 Flow control Hardware After clicking OK you should be connected to the serial port that you specified You can verify this by checking the status bar in the lower left corner of the window Anything that you type will be sent directly to the converter via the serial port connection Likewise anything that the converter sends to the computer will be displayed on the screen You may or may not be able to see what you type 21 Troubleshooting cont Step 3 At this time turn the vehicle key to the ON position This will provide power to the con
15. s used primarily by Ford and a few other manufacturers ISO The ISO protocol is used primarily by European manufacturers but is also used domestically by Chrysler The following list illustrates some of the manufacturers that use the ISO protocol Domestics Chrysler products e Chrysler e Dodge e Jeep Imports e Acura e Nissan e Audi e Porsche e BMW e Subaru e Honda e Toyota e Mercedes e VW e Mitsubishi e Nearly all import vehicles NOTE The lists above are not intended to be comprehensive Before ordering please verify the communication protocol used on your vehicle by asking a professional Your local dealer should have this information You can also determine the protocol by analyzing the pins found on your vehicle s OBD II connector See Determining the Protocol from an OBD II Connector Determining the Protocol from an OBD II Connector Every vehicle manufactured since 1996 will have a 16 pin OBD II connector that can be found within 1 meter 3 feet of the steering wheel The image below illustrates what the connector looks like As a general rule of thumb you can use the following to determine which protocol your vehicle uses e GM VPW e Ford PWM e European and Chrysler ISO You can also determine which protocol is implemented by taking a look at the vehicle s OBD II connector All vehicles are required to have pins 4 5 and 16 Pin 4 is the vehicle s chassis ground pin 5 is the signal ground and p
16. verter and the converter should echo the name and version number of its internal processor You should see something like ELM322 v1 1 appear in the HyperTerminal window If nothing appears type ATI and press ENTER This is a command that will force the converter to identify itself If nothing appears check your cable connections and verify that you are using the appropriate converter for your vehicle Click the File menu and choose New Connection Repeat the above procedure but try a different COM port this time If you used COM1 the first time try COM2 this time If you don t see any text within a few seconds type ATI and hit ENTER If you still can t get the converter to respond you can try yet another COM port setting Once you have tried all possible COM port settings you can conclude that the converter is not functioning properly This is because either the converter is not working properly or it is not the appropriate converter for the vehicle If you purchased more than one converter you can try the above process with another converter type If you can successfully get the converter to respond and print a message to the screen then you can conclude that the cables are attached properly and that the correct converter is being used for the vehicle Step 4 Once you have verified that the converter is attached properly and that it is the correct converter for the vehicle you need to verify that the converter can communic
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