V2 with the CAN chip. To load a ready to load. S1. 9 file to your Mega. Squirt II over the serial port, you need to use Eric Fahlgrens Mega. Squirt II downloader program click the link to download, which works from either a window or from the command line. If you miss any of these steps, youll have problem communicating. For more info, see step 4. Next you may need to connect some jumpers. Mega. Squirt II from the Mega. Squirt PCB. This is used for the 1. Volt stepper motor driver. You should add a jumper on the Mega. Squirt printed circuit board to provide a source of 1. V even if you arent using a stepper motor this will keep the stepper driver chip cooler. On a V2. 2 main board you run the jumper wire. X1. 3 and slightly below on the Mega. Squirt PCB. to pin 1. DIP i. e., JP1 6 on the Mega. Squirt PCB. On a V3 main board, follow the instructions in the V3 assembly guide. This is the one non plug n play setup between the 6. HC9. 08. GP3. 2 processor i. Mega. Squirt processor and the Mega. Squirt II board. The problem is that the Mega. Squirt II needs the 1. V, but there is nothing like this running to the DIP4. Everton Fc Academy Trials 2014. HC9. 08. GP3. 2 for obvious reasons 1. Volts would cook the GP3. This is indeed one of the difficult things if one wants to keep on swapping between the old 6. HC9. 08. GP3. 2 and the MS II, in that if you re install the 6. HC9. 08. GP3. 2, you MUST. Remove the 1. 2V jumper, or. Bend pin 1. 6 on the 6. HC9. 08. GP3. 2 out such that it stands free and does not install in the socket. Snip the pin 1. 6 of the 6. HC9. 08. GP3. 2 short so it cant contact the socket, since it is not being used, or. Use a 4. 0 pin socket and snip pin 1. That way you can easily switch between MS I and MS II and not have to bendsnip the pin on the actual processor. Also, if you are going back to Mega. Squirt I be sure to unplug your stepper motor if you had one connected, because it will confuse and possibly damage your Mega. Squirt I if you dont. It will run for a while and then start resetting madly. This is in addition to the fact that you must unplug the 1. V line from the socket before re installing Mega. Squirt I. Then you have real plug n play between the Mega. Squirt II and the 6. HC9. 08. GP3. 2 from Mega. Squirt I. This is one of the issues Bruce is addressing on the new V3. V source pad. To use the ignition control and IAC control functions of Mega. Squirt II on a V2. Mega. Squirt PCB, you will need to add wires for these functions, and set a jumper or two. The ignition control wire should be hooked to the 5th pin on the JP1 header the row of closely spaced holes beside the CPU socket, near the copyright notice. The IAC pins are connected to X2, X3, X4, and X5 see the illustration below. To bring the connections out on the DB3. If you want to use the IAC stepper motor control function of Mega. Squirt II with a V2. Mega. Squirt PCB. X2 or DB3. 7 pin 2. X1. 1 goes to Coil 1, lead AX3 or DB3. X1. 2 goes to Coil 1, lead BX4 or DB3. X1. 3 goes to Coil 2, lead AX5 or DB3. X1. 4 goes to Coil 2, lead B. Note that the V3 main board has dedicated jumpers for the IAC, see the instruction in step 2. V3 assembly guide. Then you need to select the Idle ControlAlgorithm in Mega. Tune. In some cases setting the stepper motor to IAC Stepper Always On will cause the IAC to get hot. However setting it to IAC Stepper Moving Only, might cause a problem with idle speed changing from one start to another. You can test if your IAC is suitable for always on by leaving your stepper powered on the bench for 1. If it doesnt feel too hot to you, then set it to Always On. Apparently this is what GM does. But if you want to be safe they should test it on the bench for 1. IAC temperature frequently with your fingers. It may get warm, but it shouldnt burn your fingers just touching it. There are more details on the IAC page. These DB3. 7 pins are also used for V3. If you want to use the ignition control function of Mega. Squirt II with a v. JP1 header counting from the end nearest X1. Mega. Squirt PCB to the ignition module pin that receives a signal. You should also remove the Dave capacitor, if installed. If you are not using a FIdle valve using an IAC for example, you can remove Q5 from the V2. Mega. Squirt PCB, and connect a jumper from JP1 5 to the hole for Q5 closest to R2. This will give you an ignition control signal on the DB3. If you are using the ignition control, but not the IAC, you can connect the ignition control wire to any of the X1. X1. 4 holes, and retain your FIdle function. For example, on the GM 7 pin HEI module, you connect the Mega. Squirt II signal to the ignitions modules pin E. You will also need to wire other connections to your ignition module, depending on its makemodel. Here are more ignition details. Note that the ignition signal comes in to Mega. Squirt II on DB3. Mega. Squirt. However, it is important to understand that there are differences between the ignition input signal needed for Mega. Squirt II versus Mega. Squirt. Mega. Squirt needed one signal per ignition event, but the timing was not critical. Mega. Squirt II needs one signal per ignition event, but this signal MUST occur at the advance offset with respect to TDC. So you CANNOT use the negative side of the coil to trigger Mega. Squirt II because the coil already has timing advance built in, and using it for a timing signal will screw up the total advance severely. You must use the appropriate distributor or crank wheel for your ignition module. One other thing to note is that the Dave cap will delay incoming ignition pulses. The delay is dependent on frequency. It should be used only if people are tapping an ignition coil primary for fuel only. For any type of ignition control installation, the input source should be Hall or VR sensor or something else other than the coil primary windings i. P0. 42. 0 DTC Code Catalyst System Efficiency Below Threshold Bank 1Welcome to P0. DTC diagnostic trouble. P0. 42. 0. The P0. If your cars. check engine light is on, get that code read in case its a P0. A P0. 42. 0 code is a trouble code on OBD II equipped vehicles. All vehicles. from 1. North America support this generic powertrain code. This code is a pretty common one and this site is here to help the average. DIY car owner like you troubleshoot, diagnose, and fix. P0. 42. 0 code, saving money. If your car has multiple trouble codes DTCs, its always a good idea to. For example, if you. P0. 30. 0, P0. 42. P0. 17. 1, then youre going to want to tackle. P0. 30. 0 Random Misfire code first resolve it, and then tackle the P0. The reason for that is that the first code could be causing further. DTCs to be set. If youve come to this site you most likely already know that you have a. P0. 42. 0 code. To start, we strongly recommend you seek the services. Also, be sure to follow proper diagnostic. If you simply change parts. This site is here for information purposes only and is meant to help. It is not intended as car repair advice. OK, so what does a P0. As mentioned above, the codes description is Catalyst System Efficiency. Below Threshold Bank 1. OK, now tell me that again in plain English. Bank 1 refers to the side of the engine which contains. On inline engines such as 4 5 cylinder engines, there is. So, to really simply things lets just say that the. O2 sensor. is not so great. FYI this code is identical to P0. You may even find you have both P0. P0. 43. 0 trouble codes at the same time. There are no symptoms so why should I fix it Great question A P0. MIL malfunction. The reality is there is still something. A poorly maintained car will run less efficiently, burn more gas, and cost. Plus, if your check engine light. P0. 42. 0 code and you decide not to fix it, another more serious. The MIL lights up whether you. While I have your attention, dont forget to do oil. PSI. So what is causing my P0. There are a number of things that could be causing this p. The most common thing is the catalytic converter itself is no longer. The other likely thing is the rear O2 oxygen sensor. Other things could include exhaust leaks, damaged. O2 sensor wiringconnectors, plugged catalytic converter. OK, so I want to diagnose things, what do I do next The easiest thing to do first is a visual check of things. Visually inspect. If any of those symptoms. Then, visually inspect. O2 sensor behind the converter. Check for broken wires, obvious. If all that checks out, youll want to check the operation of. O2 sensor. To do that, youll need access to a scan tool or oscilloscope. Check that the waveform is pretty steady. If the reading fluctuates then the. A few additional DIY friendly tips include Try Cata. Clean, a gas tank additive. Run 1 gallon of lacquer thinner through the gas tank when at 12 tank as per Scotty Kilmer. If you have a heat temperature infrared gun, check the exhaust temperature before the cat and right after. The temperature at the exit should be in the neighborhood of 1. Fahrenheit hotter when the engine is fully warmed up and you have the engine running at about 2,5. Dont accidentally take the temperature of heat shields, pipe only. On some vehicles such as some Subaru models an ECM reflash will fix the problem. As you can see a P0. Good luck If after some diagnosis you find you do need to replace the converter, please consider buying one using this link from Amazon as we get a small commission if you buy anything after clicking the link. Thanks Other P0. Here are a few links to some other sites with great P0. User CommentsPlease browse the comments below for tips and tricks from other vehicle owners and technicians. Driver Install Error Code 31 Toyota© 2017