Power Commander Support: FAQs
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Frequent Asked Questions Section
Below you will find a list of frequently asked Power Commnader question. If you do not find a detailed asnwer to a listed question, or if you need more eleborate information regarding any of questions here, or any that you might have, one of our technical experts will be more than glad to answer these for you at 1-800-992-4993
FAQ Category: Power Commander Unit General Questions
 
Asnwers for Power Commander Unit General Questions
Please read this file for additional information the Accelerator Pump feature.
The “SE” means Second Edition. The first version of Windows 98 did not properly support USB devices. If you go into “Control Panel” in Windows and double click the “System” icon the version number is displayed. If the version number is 4.10.2222, it is the “SE” version.
The drivers required are found on the install disk for Windows 98SE. We have also put copies of the necessary drivers in a folder named Win98 on the Power Commander CD.
A low battery will keep the PCIIIusb from communicating. The PCIIIusb can quickly drain (about 20 minutes of use) a new battery, so make sure to not leave it plugged in longer than necessary. Also, make sure the cable is pushed all the way into the PCIIIusb’s port. Sometimes the connector needs a fair amount of pressure to fully seat it.
Answer: The Power Commander USB needs to be powered up by either the bike or a brand new 9 volt battery via the battery adapter. If the unit is not powered up, the computer will only see a USB device being plugged in, but will not allow the software to communicate. If a battery has been plugged in for around 5 minutes, it may be too low on power to allow good communication.
The software is not communicating with the Power commander,. Make sure that the ignition switch is on, the kill switch is in position, and the USB cable is firmly connected to both the Power commander and the computer.   Make sure that the unit is staying powered up (green light will be lit on the face of the unit) and the your cable is connected.  The USB cable needs to "snap" into place.  Applying ample pressure is sometimes required.
When adjusting the buttons, these changes will not be shown in the cells of the software.
All of the software, map files, etc., can be found on the web site at Power Commander Select your bike model.
The USB cable is a USB to Mini-B cable and it can be purchased at any computer store. If you would still like to purchase a CD you can do so by going to:
Power Commander Replacement Parts Purchase 
This message will appear if you try to load a map from a different make or model than the Power Commander is connected to. (i.e. attempting to load a Harley map to a Suzuki).
The button ranges of the Power Commander break your RPM up into thrids. If you are using a Power Commander then while communicating to the software press one, and the highlighted area will represent that button.
These errors appear to be communication related. Unplug the USB cable from the programmer and switch USB ports on the computer. If the error still comes up, try switching the USB port to another one and restart the computer while the programmer is plugged into the USB cable. This should refresh the USB port. Power to the programmer does not need to be attached.
The firmware did not load correctly and needs to be reloaded.
When installing the firmware, the "Update Settings" function of the firmware loading process did not go through correctly.
Open the PCIII USB Control Center application on your computer, and go to the "Help" menu at the top. From the "Help" menu click on "About Power Commander 3 USB Software" to find your version.
Using the 9V power adapter that comes with the Power Commander allows you to remove the Power Commander from the bike and bring it inside to your computer.
  • Verify that the latest version of the PCIII USB Control Center Software is installed on your computer and can communicate with the power commander
  • 1. Close all Power Commander Applications on your computer.
  • 2. Install the Accelerator Pump Utility to your Desktop and open it.
  • 3. Verify that "Accelerator Pump Feature Enabled" is displayed by clicking on the Enable Accelerator Pump Feature Button.
  • 4. Close the Accelerator Pump Utility that is open on your desktop.
  • 5. Open the PCIII USB Control Center Software that is on your computer.
  • 6. Go to the "Power Commander Tools" menu and then to "Accelerator Pump Configuration" to make the required setting changes for your style of riding, then click OK .


On bikes that use an O2 sensor in the stock exhaust have a closed loop area that can not be adjusted by the Power Commander alone. If you make adjustments with the PCIII in the closed loop area the O2 sensor will sense these changes and the ECM will alter the fuel curve accordingly. If you want to have full fuel control over the entire RPM range of your bike then you will need to bypass the closed loop area which the O2 eliminators will accomplish. If you are looking for the best fuel economy and not worried about making changed to the closed loop area you can leave the stock O2 sensors connected and still make changes outside of the closed loop area with the Power Commander.
Asnwers for Power Commander and Ignition Module
No, all Power Commanders utilize a nonvolatile memory (it does not require constant power to maintain it). The only way a map can be “erased” is to use a computer to load a new one in place of it.
Because of the special compound used to seal the units, the buttons may feel like they do not move, even though they actually do.
The most common problem we see with returned Power Commander is damage to the wiring harness. If the Power Commanders’ wiring harness is cut or nicked by the frame or sharp bracket it can short to ground. Once this happens a number of symptoms may be present, overly rich running, hesitation, stalling, etc. We suggest very closely inspecting the harness for any signs of damage. Small cuts may be difficult to see. If any damage is found, you can simply retape that area, unless the wiring is significantly shorted.
No, the Power Commander is a fully sealed unit. It is not necessary to cover the unit to protect it from water. The most important thing to is to make sure the port plugs are used.
Make sure that the latest Power Commander USB software (Version 1.1.3) is installed. If it is then try to reload the firmware into the Power Commander. The firmware must be loaded into the Power Commander and when you go to the "View" menu and "Power Commander Information", the firmware version should show 2.0.4. Once all of the above items are verified, an ignition table will show up when the ignition module is connected.
Make sure that the ignition module is communicating with the bike by showing a green indicator light on the front of the module once the bike is started. If the light is red, connections may need to be checked. The module should show green as soon as the bike is running which will show communication with the bike. Reloading firmware may also help.
The ignition module may have been inline when programming the firmware for the Power Commander. If so, the firmware for the ignition module will need to be reloaded into it for the unit to come back on. Please contact Dynojet regarding this process.
  • a. If the LED on the shifter is on and red, then the spacing is incorrect and the shifter is engaged which will keep the bike from starting. Change the spacing until the light is green and the bike should start.
  • b. If the light is not on, then the placement of the wires in the white connector on the shifters harness needs to be checked.
Asnwers for Bike Model Specific Issues
Verify where the injector connectors have been hooked up. There are two identical sets of connectors on this bike. There is a set next to the fuel rail and there is one set next to the shock under the seat and battery. If they are plugged in down by the shock, the unit will not work. The unit should be plugged into the set next to the fuel rail.
Verify the placement of the Throttle Position Sensor wire tap. It should be installed on the red wire with a yellow tracer on the GRAY connector side of the ECU. There is a yellow wire with a red tracer on the BLACK connector for the ECU that can easily be mistaken for the correct one. Also, verify that the connector is securely fastened and has not cut through the wire. If it cut through the wire, the Power Commander still may get a throttle position signal, but it may be erratic.
If custom LED tail lights are being used, they may give off interference up the line that causes the Power Commander to loose its 12 volt reference for power and shut off. The power wire (Red wire with bullet connector terminals) will need to be relocated to a keyed, solid 12 volt power source.
The injector connectors have been installed into the secondary injectors (on top of the air box), rather than the primary injectors (underneath the tank).
The TPS connectors from the PCIII may be connected to the wrong location. The Throttle Position Sensor on this bike is located on the left hand side of the throttle bodies. There is the same connected on the back side of the throttle bodies that is for the MAP sensor, this is the incorrect location for the PCIII to be connected to. Please verify in the instructions.
This issue can be related to improper placement of the ground wires. The ground wires for the Power Commander must be placed exactly per the instructions for the unit. Any other locations may not supply a secure ground path and cause issues.
Verify where the connectors are hooked up. Start at the throttle bodies and trace down to the first set of connectors that you come to. This is the correct set. There is another set further down the harness that the connectors will fit into. The correct set is on the left hand side of the frame.
Verify where the injector connector is plugged into. There is an identical connector on the left hand side above the air box, right next to where the TPS connector is located. The correct connector is on the right hand side, between the #3 and #4 throttle bodies.
There is two sets of connectors on this bike but one is grey and the other is black. The Power Commander needs to be plugged into the grey one for proper operation.
These models have a rubber boot that needs to be transferred from the bike's OEM connector to ours. This keeps water out of the computer and if not installed, the sides of the ECM have openings that allow liquid right into the circuitry. In some cases, the computer can be removed and dried out for a couple days and it will function like normal, but this is not guaranteed. Make sure that the rubber boot, if it was installed, does not have any holes and is securely placed to keep water out as much as possible.
The stock connector on this model does not have pins in every single space and therefore Harley-Davidson put little rubber plugs in their place to seal up the open spaces. These plugs still seem to allow water by and it causes corrosion to start on the Power Commander connector. We recommend putting di-electric grease in our connector before plugging them together so that the moisture is blocked. Also, relocation of the connector to under the right side cover, on top of the ECM, may be beneficial.
Map Related Questions
Dynojet offers different maps for the US market and the European market due to the differences in the fuels. In most cases the fuel available in Europe will make a bike run much richer than the fuel available in the US. For this reason we recommend that you use a map that coincides with the region in that you live in. Although we have seen some European maps work well for US bikes so it may be worth trying.