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5

OBD-II has been mandated in every vehicle sold in the US and produced from 1996 onward. Europe has something called EOBD, which uses the same protocol and connector as OBD-II. Japan calls theirs "JOBD". I suspect it will be relevant for a very long time. While OBD-III is in the works, it is still OBD-II at it's core. The protocols may be different in ...


4

The commands to read out Speed, RPM and some other sensor data was well as fault codes are standardized for all cars and commonly known. That is, one can "easily" develop some software to read out these, and even to reset fault codes. But all other functionality like reprogramming/tweaking the ECU are implemented by the manufacturer, and each manufacturer ...


4

Technically no. "Codes" are errors that are set when a problem is detected, typically affecting emissions. "incomplete monitors" are tests that have not fully run to verify the validity of certain systems - perhaps HO2S, EVAP, catalyst, etc. An incomplete monitor is not saying there's a problem; it's just indicating that the ECU has not been driven ...


3

If the problem persists then yes it will come back on. Those type of fault codes are usually not instant tho so it may take some time to see it again. After fixing the gas cap the code may clear itself without a scanner but it usually takes a few cycles or x amount of miles driven.


3

Believe it or not, the first thing to do is to check all the tire pressures to make certain they are within spec and equal. A low pressure tire will make more revolutions/mile than the other properly inflated tires, and can confuse the ESC/ABS module into thinking there is a problem with one of the wheel speeds. The most common hardware failure that causes ...


3

In some models of the 370Z, there is a transport / storage switch in the interior fuse box. It's meant to reduce battery drain when the car is not being used by a driver. It cuts power to the obd2 among other things but not anything vital so you wouldn't notice it from daily driving. When I was checking fuses earlier, I had pulled out this switch just a ...


3

Because having two devices connected at the same time can possibly change the behavior of the host system in some situations... The manufacturer may only expect one device to be connected at any one time (whether it be a diagnostic reader, insurance recorder, fleet management recorder etc etc) - and not tested or warranted the performance for 2 or more ...


2

This mode really only serves one general purpose with a few sub-modes: Lock/Assign the ECU to a particular VIN Display the CALID or CALibration IDentification which is basically the "software version" of the ECU, which reflects specific parameters of that particular vehicle. This could be changed by reprogramming or "flashing" the ECU, and might change as ...


2

Data is not transmitted to the OBD 2 connector port, this is an interface which allows you to plug diagnostic equipment into the wiring loom of the car. You could conceivably remove the port from the loom, i.e. make the port dead, but it would be far easier (and have the same effect) to unplug the device from the port. Interesting side-note, the mileage is ...


2

I used above formulas to create below gnuplot helper functions vol_eff = 0.8322 f_time(x) = x/1000 f_rpm_to_rps(x) = x/60 f_mbar_to_kpa(x) = x / 1000 * 100 f_celcius_to_kelvin(x) = x + 273.15 f_imap(rpm, press_mbar, temp_c) = f_rpm_to_rps(rpm) * (f_mbar_to_kpa(press_mbar) / f_celcius_to_kelvin(temp_c) / 2) f_maf(rpm, press_mbar, temp_c) = f_imap(rpm, ...


2

I wanted to followup on this one, in case anybody else gets here. Brief review: In many (all?) states within the USA, an annual emission / SMOG test is required at the time of registration renewal. In my state, they follow the guidance from the federal Environmental Protection Agency (EPA) concerning readiness during OBD II inspections. In simple words, ...


2

You need to get through the drive cycle for your Camry. Following these steps exactly should get you there (as found on this website): 2000 Toyota Camry Drive Cycle (Engine 1MZ-FE & 5S-FE - CA Emissions Certified) Begin by: (Make sure you have between 1/4 and 3/4 fuel in the gas tank. The EVAP test will not run while your Toyota has a full tank ...


2

The ODB scanner should read the codes, as long as the ignition is turned on and has power. If you disconnect the battery or remove the fuse so that the ECU (engine control unit) loses power, it will reset and the codes will be cleared.


1

You want a scan tool that has live data, reads P, C, U, and B codes. If cost effective, you want it to read enhanced manufacturer specific codes. It should also have bi-directional capabilities. Finally, some of the better units tap into a pattern failure database that tells you what parts, wiring harness problems or software issues are at the root cause of ...


1

The voltage can and does vary... you need a multimeter as a minimum. With the engine at about 2000rpm you should see somewhere between 13.7 and 14.8 (can be up to 15.3) volts depending on the type of alternator. However, if the battery is low on charge you may be around the lower end of the voltage. If you want to test the current then you need to be ...


1

It is very easy to connect an OBDII scanner that talks Bluetooth to your phone. I typically do this. However if you leave it attached, it does drain the battery... There are companies that provide "security" systems for high end cars, and these allow remote access for a range of things, however after a friend of mine demonstrated this attack, I wouldn't ...


1

There are no OBD parameters that specify, or even remotely hint to a particular time to change spark plugs. The best gauge of spark plug health is to pull one ans "read" the color, deposits, and electrode and insulator condition. Another simple method is to replace conventional spark plugs every 35k miles, Platinum plugs perhaps every 50k-70k miles, and ...


1

Paulster's answer is correct. BUT . . . I would suggest between steps C and D, that you take your foot off the throttle and coast down as long as you can (you are still going to need a long no-traffic highway ... please be safe). This makes the exhaust go very lean, and tests the OSC or "Oxygen Storage Capacity" and the honeycomb matrix heat retention of ...


1

From the data we have so far (thanks for supplying the second set of traces OP!) I'm leaning towards the Mass Air Flow (MAF) sensor being the culprit. Looking at the initial traces the air flow figures look way, way too low - unless you're trying this at the top of Mt Everest - and the "spike" from t92 to t94 kind of defies physics, the revs are dropping ...


1

P0420 is catalyst efficiency, which could be any number of a hundred different causes, a failing catalyst only one of them. I believe the symbols are for "pending" (which is different than a code that has set the CEL/SES check engine light. The second symbol I think is just an indication that there is more than one code, and you can use the arrow keys to ...


1

Swap the CAN lines and make an adapter harness when you need to connect, I have heard of plenty people doing this to avoid thieves as well as manufacturer warranty voids after tuning.


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I figured out that the formula stated in the paper for fuel flow below: fuelFlow = (MAF * 3600) / (14.7f * 820) ; // l/h is off by a single 0(needs an extra 0 added to the right of decimal).So we need to divide by 10, so the actual formula for fuelFlow now becomes: fuelFlow = ((MAF * 3600) / (14.7f * 820)) / 10 ; // l/h Apart from this the MAF ...


1

The first image below indicates the OBD2 connector is just below the fuse box behind the knee panel left of the steering column. The one marked DLC3. If it is not there look to see if it got moved somewhere else close or look for a cut wire harness. Image 2 is the wiring for the DLC3 connector (E10), and the 3rd is the pinout for the DLC3 connector (E10)


1

I have a similar ( or maybe same ) adaptor for my E46 ( 2000, where BMW did not run all the wires to the OBDII port in the passenger compartment ), and it works fine. Reads all engine and other module codes with my foxwell scanner. Your mileage may vary.


1

I have a 2006 Murano (same replacement procedure as for your 2007) that threw the code P0345 Camshaft Position Sensor A Circuit Bank 2. This is the one nearer the front of the engine, on the driver's side (the other is also on the driver's side, but more toward the back/firewall). The symptom (besides the code) was that the car was hard to start. I would ...


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