Ford coyote engine ignition and starting performance guide. Note, if you get a replacement pcm from a salavage yard get from the same year, engine, and transmission. P2304 ford ignition coil b primary control circuit high. This section can be used to look up the location of a particular pin, a wire color or a known good value of a pcm circuit. All coils are fed from a single source through a large fuse and the delicate coil driver ics in the pcm become the weak link when current loads increase from aging coils plugs. So i got all the parts online and did the repair myself.
These coils are all controlled by the pcm which attaches to each with two wires. The pcm i have has three separate plugs not the large single one i can find schematics for. This primary waveform shows a ford multistrike ignition coil firing three. The pcm groundsungrounds this circuit to activate or deactivate the coil. If the driver in the pcm is determined to be defective, replacing the suspect coil would be a good idea, as it may have spiked the pcm and took out the coil driver.
How a 4 dollar spark plug can destroy your ford edge pcm duration. Connector pin identification repair guide autozone. When an engine with coilonplug cop ignition starts to misfire, there are. Ford pcm ecm ecu repair service circuit board medics. The coil driver circuit is monitored by the pcm for faults if an open or a short is detected in the driver circuit for coil number 2, a p0352 may set. Check pcm internal coil driver functionality by p035x is present, follow procedure a. We are now offering ignition coils and spark plugs to make the repair process even easier. The coil driver circuit is monitored by the pcm for faults. If there is no coil trigger, check at the pcm for shorts or opens and repairreplace the wire as necessary.
The test fails when the pcm does not receive a valid idm pulse signal from the ignition module integrated in pcm. Obdii pcms have circuit protection to take account of the possibility of shorted actuators fuel injectors, coil drivers and other electrical overloads. With the engine running, i am getting a reading of. Dont know if this helps, found the following service bulletin p0351, p0352, p0353, p0354, p0355, p0356 coil on plug primary circuit failure ford has issued a tsb tsb 0926 for owners of 200506 ford escapes and mercury mariners with the 3. P2316 ford ignition coil f primary control circuit high. What is a coil driver 2005 ford escape it is a pull down resistor in the form of a transistor,that works like a switch in the pcm main computerto ground out or pull the individual cop ignition coilsprimary windings to ground. Drive ignition coils on a coil onplug setup without a cdi. Need help with code 0352 ign coil primary circuit fault. P0352 ignition coil b primarysecondary circuit malfunction.
Can you supply me with the pinout locations for the coil drivers. If an open or a short is detected in the driver circuit for coil number 2, a p0352 may set. Pulled pcm, opened case, and found burned up coil driver ics. The 2005 ford escape has 108 problems reported for computer pcm failure.
One of these wires is used as a battery feed and the other is the coil driver circuit. P2304 ford meaning the current flow, or dwell, through the primary ignition coil is controlled by the powertrain control module by providing a switched ground path through the ignition coil driver to ground. Also, depending on the vehicle, the pcm may also shut down the fuel injector to. Can bad coils fry that computer the pcm pcm zephyr v63.
It is common for these coil on plug systems to fry the driver transistor inside the pcm,if the spark plug gap becomes so worn that the spark can not jump said gap. This is a very good case study on how to deal with. The coil driver circuit is monitored by the pcm for faults if an open or a short is detected in the driver circuit for coil number 6, a p0356 ford may set. The copperhead pcm ecu takes all of the known elements driver input, speed, environmental conditions, and engine timing events and turns them into a firing order cadenced in perfect time with piston and valve timing events to fire spark plugs at just the right moment. It shorts inside the coil sending high voltage to the pcm driver. Use the 12 volt nonpowered test lamp to verify vpwr voltage at the ignition coil harness connector. Notorious 2005 ford escape, pcm repaired coil drivers, now. Have a ford fusion 2007 told ignition coils bad and pcm. P2300 ford description the current flow, or dwell, through the primary ignition coil is controlled by the powertrain control module by providing a switched ground path through the ignition coil driver to ground. Interesting during my research using 2carpros i found a previous thread for a 2005 escape diagram. When the ignition coil driver is switched on, current rapidly builds up to a maximum value, determined by the coil inductance and resistance.
Wound up sending the pcm to sia electronics in illinois. I replaced all the ignition coils, which isnt easy considering you. She was driving it one day and the whole dash lit up and it just died. Statistically, the pcm is probably the most reliable component on the entire vehicle. It seems to me ford has admitted to this problem, yet offers no help. That does not check the functions of the pcm to determined if they have been zapped. Im trying to repair my sisters 2005 ford escape v6 that appears to have a bad pcm computer and ignition coils. Ford p0356 ignition coil 6 primarysecondary circuit car. Took longer than was quoted to get it back, but once it was installed, we were back on the road. The coil driver circuit is monitored by the pcm for faults if an open or a short is detected in the driver circuit for coil number 1, a p0351 ford may set. P0351 ignition coil primary a circuit malfunction coil driver for cylinders 1 and 6 malfunction. P0355 ignition coil e primarysecondary circuit malfunction.
This is a ford fusion pcm powertrain control module repair service for a 2006, 2007, 2008, or 2009 ford fusion 3. Ford dealer could not program keys, says could be ground or can line open or short, but otherwise no help. To locate the pcm information for a particular vehicle, find the model, correct engine size with vin code and finally the year of the vehicle. Request providing the attached pinout on a 3 connector type pcm. P0352 ignition coil primary b circuit malfunction coil driver for cylinders 3 and 5. I replaced all of the other coils with motorcraft parts to hopefully prevent any more coil drivers from blowing.
I also replaced all the coil on plugs as the tsb requires with new motorcraft units. Usually, but not always, when this happens, the pcm will set one of the following diagnostic trouble codes. If a primary coil is damaged due to a harness short to ground the pcm will not be damaged. Ford dtc p0353 diagnostic trouble code dtc definition. There are videos on youtube showing how to test a pcm driver circuit. If there are two 2 or more coil circuit primary dtcs p035xp035x, follow 4. The pcm power relay is the furthest most relay opposite of the pcm diode. This happened very suddenly, and it looks like all four coil drivers in the pcm are shot, but. P2316 ford meaning the current flow, or dwell, through the primary ignition coil is controlled by the powertrain control module by providing a switched ground path through the ignition coil driver to ground. The circuit that is blowing the fuse is circuit 361 red in color which powers a. If a bad coil or coils are suspected replace immediately with the plugs at the s.
I need to check the wiring for either an open or short. The part numbers are almost the same as my originals except for a few digits 8m2e12a366aa. Need some help trying to fix the flex ford flex forum. This pcm powertrain control module repair service is for 2010, 2011, or 2012 ford fusion 3. What would cause all four coil packs to be dead on a ford f150 5. Ford distributorless ignition system auto service professional. When the ignition coil driver is switched on, current rapidly builds up to a maximum value, determined by the coil. Replace all plugs, all ignition coils, sent the pcm to get repaired, diagnosed with coil driver 4 fried, all coil drivers were replaced pcm was on a simulator for 24hrs, diagnostics ran on pcm pulled up vin, odometer, etc. Three and fourchannel ignition coil drivers are ideal for atvs, motorcycles, snowmobiles and racing vehicles with space limitations or those that do not require additional voltage generated by a cdi. However, the pats will have to be reprogrammed or pats disabled with a turner. Ignition coils failure problems of the 2005 ford escape. Ford p0351 ignition coil 1 primarysecondary circuit car. Check the coil driver circuit for open, short to voltage, or short to ground.
Also, depending on the vehicle, the pcm may also shut down the fuel injector to the cylinder also. Ford informed us that computers are on backorder for 2 to 3 months. The 2007 ford edge has 7 problems reported for burned up coil packs. Notorious 2005 ford escape, pcm repaired coil drivers, now it will. Once the ignition module or the driver is destroyed, replacing the module or pcm without fixing the underlying cause of the failure will just damage the replacement. A bad coil can and very often does damage the coil driver in the pcm. Diagnose ignition coil failure ricks free auto repair advice. If the pcm has been damaged by a failed ignition coil, then all 6 coils.
While driving 35 mph, the vehicle began to jerk and the check engine warning light illuminated. One is a battery feed usually from the power distribution center. Onechannel ignition driver is ideal for high performance distributed applications. Replace all plugs, all ignition coils, sent the pcm to get repaired, diagnosed with coil driver 4 fried, all coil drivers were replaced pcm was on a. The other wire is the coil driver circuit from the pcm. This happened very suddenly, and it looks like all four coil drivers in the pcm. Codes pulled up showed a couple misfires and pcm issue replace all plugs, all ignition coils, sent the pcm to get repaired, diagnosed with coil driver 4 fried, all coil drivers were replaced pcm was on a simulator for 24hrs, diagnostics ran on pcm pulled up vin, odometer, etc. In the most severe instances, the high voltage can seek ground through the ignition controllereither a freestanding ignition module, or the ignition driver inside the pcm. We brought it to ford and they said they thought it had a bad pcm and ignition coils.
A damaged pcm from a failed ignition coil is the most common problem. The current flow, or dwell, through the primary ignition coil is controlled by the pcm by providing a switched ground path through the ignition coil driver to ground. This repair service is for the pcm power control module or ecm engine control module from a 2005 or 2006 3. P2300 ford ignition coil a primary control circuit low. So how long do you have before it will damage it you ask. Left bank is good, truck starts and runs, very poorly, cannot be driven. About all you can do to check the pcm is to check if you have power going to it and a good ground. Do not replace the pcm without verifying the coil driver functionality. The vehicle was towed to a dealer where it was diagnosed that the ignition coil exploded and damaged the pcm. The pcm ungrounds and grounds this circuit to deactivate or activate the coil. While this reduces cost and complexity, the coil drivers are now inside the pcm, so the pcm must be protected against the coil primary flyback. With a cop, each of the vehicles cylinders has its own coil.
The tsb said it can confirm the problem is with the pcm with an osmelloscope test, using a ford ids. Although diagrams 4 and 5 show this a single pcm connector, i needed the red coil wire diagramthank you for that. Ford released a bulletin descibing the need to replace all spark plugs and ignition coils to prevent pcm damage. The coil driver circuit is monitored by the pcm for faults if an open or a short is detected in the driver circuit for coil number 3, a p0353 may set.
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