FordSys Scan FreeAnother app by OBD High Tech. This one caters to Ford vehicles, providing information from several vehicle modules as well as the OBDII diagnostics. For use with Bluetooth scan tools.
Our OBD2 AllInOne scan tool will work on 1996 or newer OBD 2 / EODB / JODB compliant cars and trucks, and is based on the ELM327 chip which autodetects all OBDII protocols: CAN, ISO, VPW, PWM, and KWP2000 This tool works with Every Make, Every Model, Foreign or Domestic! 3 Things NeededThere are basically 3 things you need to record diagnostic data and clear diagnostic trouble codes ( DTC's ) and turn off the check engine light from an OBDII based system on your 1996 and newer car. 1 - A PC computer, a Pocket PC PDA, or PalmOS to look at the OBD data.2 - The OBD2 All-In-One scan tool to interface your PC or handheld computer to the OBDII diagnostic port on your car.3 - A software program running on your computer to capture the OBD data.
Why This Setup?What is the reason for having the above setup for yourself? Mainly, you now have a powerful tool to analyze your cars On Board Diagnostic ( OBD ) data yourself, better even than the specialized scanning tools only dealerships and big automotive repair shops had in the distant past. With your own setup, if your check engine light or Service Engine Soon light (SES light) comes on you can look at detailed OBD data for yourself to see what trouble codes have been set and the conditions they were set under, and then clear that trouble code and turn off the Service Engine Soon or Check Engine Light. This will save you money in repair costs by knowing what is or isn't wrong with your car in many cases, and avoid costly trips to the dealership or repair shop. Clearing the check engine light and engine codes must be done in order to pass a smog test or emissions test. For many, it is quite interesting to be able to see your car's sensor systems working in real time, and even having the potential to upgrade performance through PROM reprogramming of your cars PCM or ECU. The OBDII Scan ToolLet's look at the OBD-2 scan tool first, since we sell low cost OBD-II scan tools. It will probably be the only thing you will need to buy to do your own diagnostics and clear your trouble codes, which turns off the check engine light. Under your cars dash you will most likely see this style OBDII connector:
Make sure you buy the correct diagnostic cable setup for your car or cars! What PC's or Handhelds WorkYou will need a computer to run your scanning or diagnostic software, preferably a laptop PC (there are programs available for almost any PalmOS and Pocket PC PDA also). The hardware requirements for the PC are largely dictated by what scanning or diagnostic software you plan on running. Some of the scanning programs are very simple DOS based programs, others are more graphically intensive. Look at the software links we have posted and read the hardware requirements for the program you are thinking of using. For the most part, the simple DOS programs can be run on very old, 486 based laptops with very little memory (
If you have a newer laptop that does not have the 9 pin serial RS-232 interface built in and has a USB only interface, order the OBD2Allinone with USB interface. You can use our serial version OBDII PC scan tool on a USB only PC by adding a USB to Serial converter. You can either buy a USB to serial adapter, or buy a PCMCIA PC card that has a RS-232 serial 9 pin interface. These serial adapters are sold with a disk that contains the software drivers needed to make them work. Buy one that can be returned in case it does not work properly on your computer, especially with the USB adapter. There are reports of compatibility problems with these USB to serial adapters, and they can be tricky to get working properly on certain computers. Ultimately it is easier to order the OBD2Allinone with USB interface. The Diagnostic Software - FreeThe last item needed is the diagnostic software that will run on your PC or handheld to collect and record the data from your OBD-II system. There are a number of excellent software packages available, with some of them being free and others giving you a trial or demo mode. Screen shots and links to each website are provided below for a few of the software packages we have tested and work well with the OBD 2 AllInOne scan tool. We're not endorsing one scanning package over another, as they all have their place and will provide critical data. Below are screen shots of some of the software packages. There are many more screens to all of these packages, we've just included a few for viewing here. You can click on the image to get a larger view, and clicking on the title link below the picture will take you to the manufacturers website for each of these OBD-II packages. We provide a software CD with all OBD2Allinone units. Scanmaster
We have found that all of the above packages are free downloads that work with our OBD 2 Allinone scan tool, with all protocols: ISO, VPW, PWM, KWP2000 and CAN (The free Scanmaster version does not currently work with CAN). Read the documentation for the particular software package you are using for more detail. The OBD2 AllInOne scan tool is built using the ELM327 processor chip, for which many software packages have been written. This chip is used by a number of manufacturers and as time goes on, more and more software packages will be developed for it. This will ensure a variety of packages readily available to everyone, with more and better features in future versions. The OBD2 AllInOne scan tool is able to operate at 2 different communication speeds that are user selectable, to insure compatibility with existing and future software packages. In Car Operation (Click the image at the right to view a short video.) In car operation is fairly straight forward. Ideally it takes just a few steps: plug the OBD-2 cable connector into your OBD port under the dash and then plug the other end into our OBD2 All-In-One unit. The power light for the OBD2 All-In-One unit will then come on. Then plug the provided serial or USB cable into the other end of the OBD2 All-In-One unit and then the 9 pin RS-232 serial port or usb connector into your laptop. Have your PC turned on and start whatever data collection software you have downloaded, and turn the car key forward to start the communication between your cars ECU/PCM and the PC. You can view your cars sensor data, read diagnostic trouble codes if any are set, and clear the diagnostic trouble codes. Some packages provide freeze frame data, which is all the cars sensor data at the time a particular trouble code was set. Some packages allow data logging for viewing later on with extensive color graphing capabilities. Other packages have built in dynomometer calculations so you can in effect have your own chassis dyno.
the good thing about OBD-II was it defined a limited set of network types that a car maker could implement for the emissions related diagnostics. this meant that tools to interface with those networks could also become standardized and inexpensive. called scan-tools, they come in full-featured versions with built-in software/display/buttons, and dumb versions that must be connected to a PC/Mac/tablet/phone to be useful.
the good news is that for simplicity and cost-savings, most manufactures only implement a single network type during certain year ranges. since they have to use one of the standard OBD-II protocols for the diagnostic bus, they might as well use the same protocol (or a slight variation) on the other buses. this is why we are sometimes able to use a scan-tool to interface with a non-OBD bus.
the OBD-II spec allows for the following protocols: SAE J1850 PWM, SAE J1850 VPW, ISO 9141-2, ISO 14230-4 KWP, ISO 15765-4 CAN, SAE J1939 CAN. if our target bus uses one of those, or if the target bus relays to the diagnostic bus, then we can continue with our hack of using a scan tool to interface with it.
If the turbocharger wastegate is not functioning, the technician will begin by inspecting for play at the wastegate control rod, wastegate actuator, and visually inspecting the boost pressure control solenoid. This will allow the technician to eliminate simple and common failures. However, if everything i mechanically sound and the wastegate can be actuated by vacuum, the turbocharger boost pressure control solenoid will be tested using a diagnostic scanner to cause the wastegate to vent boost pressure. If the overboost situation is not alleviated, the manifold absolute pressure sensor and boost sensor will be tested prior to replacing the solenoid.
This is a difficult diagnosis for anyone without a diagnostic scanner. It can be done, but it will be very difficult. Since most people without a professional scan tool will likely begin replacing parts to diagnose an overboost condition, it may be more cost effective to have diagnosis performed. If the solenoid is known to be faulty, replacement is a quick and easy job for the DIY mechanic. 2b1af7f3a8