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8

From my personal experience with this particular subject you have many variables that come into play. My shop specializes in computer systems on some of the newer vehicles (Mostly Japanese), but we do work on anything given the chance. ECM, PCM, and ECU are generally manufacturer specific. I usually see ECU when referring to Asian vehicle companies. Chrysler ...


4

I don't know about this car specifically but I've had a whole lot of time working as an air conditioning (AC) engineer at a Detroit based Original Equipment Manufacturer (OEM) The body control module (BCM) provides an interface for relays in the system, generally for things inside the passenger compartment of the vehicle. The Engine Control Module (ECM) ...


3

The VSS input pin is probably pulled high by the CCU. The ECM/PCM VSS output can probably only pull it low. If this is the case, you would expect to see what you are seeing. You could use a 10k resistor to pull the CCU input to 4.5V and then see if it starts to work as you expect, but I wouldn't recommend doing something like this unless you know what you ...


3

It sounds like you have a few things going on. If your OBD scanner reports "error", it's that your ECU isn't responding. Maybe your ECU isn't getting power, maybe it's defective. Your power windows being stuck suggest an overall electrical glitch in the car. Since the car is almost 20 years old, check to see that there isn't a switch (power window, power ...


3

The term ECM could (just as @cloudnyn3 says) be used for both Electronic Control Module or Engine Control Module. Different brands has different names for the same stuff, and also same name for different stuff, which can get a little confusing. The term ECU is often used for Electronic Control Unit (which could be more or less any electronic unit in the ...


2

Both pre and post catalyst "Oxygen" Sensors report exhaust fuel mixture to the PCM. So the PCM can and does use both to sense and adjust mixture. The rear sensor gives a better average mixture because the catalyst is a mixing chamber. In newer designs the rear sensor is used more for mixture sensing than the pre-cat sensor. In these designs a pre-cat Air ...


2

High fuel consumption can be caused by various reasons. The most common ones are: Spark plugs, spark leads and coil pack. (You done spark plugs but you might need to check the other two too) Blocked air cleaner Sometimes might be even the brakes causing high fuel consumption by binding. You can check that by lifting the car up and check if the wheels are ...


2

There are steps to replacing an ECU. Find detailed instructions here. Basically: Disconnect the battery and let the car sit for 15 minutes. Plug the new ECU in, reconnect the battery and turn the key to "accessory" or "on", whatever turns all your warning lights on. Your Check Engine Light needs to be on at this stage or your ECU is defective. Let the car ...


2

Check for an exhaust leak before or right after the o2 sensor, have someone use a rag and plug the exhaust while you listen. Or smoke test the exhaust system. Also check for vacuum leaks or any other lean/rich condition that would drive the o2 sensor in one direction or another. If you don't find an exhaust/vacuum leak you'll want to back probe the sensor ...


2

The difference is regulatory not technical. P0133 is the SAE generic version. It satisfies the USEPA and CARB that this failure is covered under a code and conforms to regulated descriptive language. P1133 is the GM version that is used in the their diagnostic system. Both have the same failure criteria.


2

From http://o2sensors.com.au/static/o2-sensor-identification-and-locations : So what is Sensor 1? Sensor 1 is the O2 sensor that is located before or upstream of the catalytic converter. (Pre-cat) So then if your diagnostic code is B1 S2 that means Bank 1 Sensor 2 down stream (post-cat). If its B2 S2 that means Bank 2 (opposite Bank to Bank 1) ...


1

The missing security light means the ecu you have installed is not good, not compatible or just has the wrong calibrations installed on it. There are two ways to do this. The right way with GM tools or J2534 or the backyard mechanic way. The right way: I usually use tech2 or a cardaq with GM SPS from ACDELCOTDS Your goal is to Replace+Program the PCM so that ...


1

While this in essence is a shopping question (and could be closed for that reason), the simple answer to your question is ... No. ELM327 devices are meant for reading what's going on with the ECU, not to write a tune to it. To change the timing (the right way) on newer electronically controlled vehicles you need to change the tune. There are ways which you ...


1

To answer your question, For programming a new ecm on a hyundai with out dealer tool you can use most any j2534 pass through device (I prefer drewtech devices)along with Hyundai's aftermarket j2534 programming software found at (https://www.hyundaitechinfo.com/). https://www.hyundaitechinfo.com/external/files/j2534_diagnostics_and_reprogramming/...


1

Your immobilizer is active. After flashing the replacement ECU with proper VIN and calibrations you need to also program the immobilizer to store the sync codes in the replacement ECU. It needs to be done while connected with your immobilizer module and key so can not be done remotely like your supplier did for flashing the VIN and calibrations. Turn your ...


1

You need to put your battery on charge for at least 24 hours with a decent mains charger. Once the battery has a proper charge (and 45 minutes won't do it) then you can re-evaluate the other problems . It is more than likely that they will disappear. My car model is well known for this type of issue caused by a slightly low battery voltage and they ...


1

Think about what you have done. You connected one ground connection to negative terminal and another to positive terminal. This way all the current traveled through those wires and body of your car. So, it should not have gone through any fuses or ECM. One of the ground wires connect behind firewall, so that was probably what made the smoke The easiest way ...


1

Yes, but a Nissan Dealership or other qualified shop has to program that ECM to your vehicle.


1

I know this is an olde post, but I've had my '97 for several years and I think it's a year specific issue. Actually I've come to believe it's not an "issue", but rather programming. I've had all J's starting from '93 up and they all lay wheels like no ones business. My best friend has a '96 I sold him and it never does this, neither did my '95 or '94. If you ...


1

You can't do this through generic OBD-II. Take a look at acceptable OBD-II queries by mode. There is nothing there to provide information about how the vehicle is constructed. That's not to say that some manufacturers may not have proprietary undocumented commands, but those aren't generally available, and certainly can't be relied on to be present, or used ...


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