Catch all tag which can refer to the "brain" of the car which can control the engine and/or transmission of the vehicle. This would include such terms as PCM (powertrain control module), ECM (engine control module), PCU (powertrain control unit), ECU (engine control unit), and many, many others.

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OBD2 to USB Cable for Windows 10

One could put an argument that this question is about software and not mechanics, however now-days everything is computerized (including cars and their diagnostic tools) so I believe this question ...
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What computer does a Toyota Corolla use?

I have a 2000 Toyota Corolla. I took it to AutoZone because my check engine light was on, and they plugged in some electronic thing that read the problems. What computer / electronic system is keeping ...
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Do I need computer reprogramming when transmission is replaced?

Honda Odyssey 2003: I'm replacing a transmission, and a local mechanic will help me to swap it in my garage. I've been told at a local shop, that in order to install remanufactured transmission ...
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Are there requirements for building a car-PC and it's software?

I am currently rebuilding a car as a hobby. As a part of it I am planning on building in a car PC with custom software for some multimedia usage, navigation and some diagnose usage. I know there are ...
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Is there a way to use a PC as an ECU for testing CANBUS Sniffer devices?

Is there a way to connect CANBUS sniffer device to a PC (computer) with CAN-H and CAN-L pairs and test the sniffer device? I want to convert my PC to an ECU emulator, connect a CANBUS sniffer device'...
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PCM Bench Testing

1997 Ford F350, 7.3, 2 wheel drive. PCM part number F6TF-12A650-AYG. OK the question is how to diagnose the PCM without codes due to the battery being dead? I have it out of the truck and was hoping ...
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Can the warning chime tone of a 2007 BMW 525i be changed, or shortened somehow?

Can the warning chime tone of a 2007 BMW 525i be changed, or shortened somehow? The chime of this car comes from the computer and is used for most warnings such as seatbelt, temperature, door-open, ...
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ECM vs. PCM vs. ECU?

Engine Control Module Powertrain Control Module Engine Control Unit Reading about them online, they seem to be the same thing, computers. So what are the spcific difference between them? Is the other ...
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Why would my odometer reset to the same mileage whenever I turn off the ignition?

I have a 2000 Nissan Altima and the odometer (not trip meter) reads 86186 miles when I first start the car. As it's driven, the odometer seems to work correctly, incrementing miles. But if I turn off ...
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How to control a car (accelerating, braking, steering) programmatically? [closed]

I would like to make a prototype autonomous car out of an off–the–shelf car (Toyota Yaris to be exact, but the instructions should be universal). One of the first steps is to get access to the on-...
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48 views

Expose Car Hardware information

I am looking for way via which i can access my car information when it is running like speed,acceleration,gear information,oil information,etc . My Car details : Hyundai Verma : Model 2006 , Manual ...
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Fuel Economy Gauge Modification

I have a little digital screen in my dash that re-evaluates my average fuel consumption (L/100km) every thirty seconds. How can I modify this to increase the reporting frequency? Preferably, at least ...
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ECM replacement - starter runs during reprogramming?

(mid-90's Buick) Someone I know had an ECM injector drive output go bad. He got a replacement ECM online, but had to take it to a shop (not a dealer) to get it 'initialized' (If that's the right word....
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Where is Cadillac CTS 2007 3.6 OBD2 connector?

I changed my pertol cap since old one wore down to the point where I am unsure it will open in petrol station. The one that I got shuts tank ok, but sensor is indicating that cap is open - which in ...
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Information from an EEC-IV on 92 Ford F150

Good evening. My general question is, what information, preferably real time, can be obtained from the EEC on a 92 Ford F150? I'm particularly looking to hook up an Arduino and digitizing the gauges ...
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Since when is CAN bus mandatory for new vehicles?

The CAN bus Wikipedia page states that: CAN bus is one of five protocols used in the on-board diagnostics (OBD)-II vehicle diagnostics standard. The OBD-II standard has been mandatory for all ...
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2006 Solstice - car won't turn over following engine replacement

I recently installed an engine (complete from oil pan to the valve cover) from a 2010 Malibu in my 2006 Solstice. (Replacing a blown engine.) The car will not crank / turn over. Symptoms include: ...
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How do I find the correct pins in a CAN-BUS connector?

This question might be too technical for this forum, but I'll give it a go. I have a 2012 BMW R1200R motorcycle with CAN-BUS. I'd like to make an Arduino interface to the connector on the bike, but I ...
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Renault/Dacia Logan 2014+ engine temperature indicator?

the Renault/Dacia Logan 2014 and above have indicators like this: As you can see, the dial at the right has the total mileage and the fuel indicator only. I'm wondering if there is an indicator for ...
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1answer
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Ford Figo Door light on when all doors are closed

I have a Ford Figo 2012, the last few weeks the door light on the dashboard has been on even through, all the doors are closed. (The light only comes on when I start my engine, as expected with Figo's)...
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Convert Manual to Computerized “Automatic”

I'm wondering if this is possible. With a conventional manual transmission (say, Tremec T56), could I install a small computer to press the clutch, change the gears, etc? Obviously, I would have to ...
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Can I access the signal from the wheel speed sensors?

We have a bunch of trucks in the workplace that drive inside the premises. I want to calculate their exact running time. Currently, we can capture engine hour data by tapping the signal of the ...
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How does the Dodge Avenger know when it's time for an oil change?

Just a couple weeks ago, I took my 2012 Dodge Avenger to the shop for (among other things) an oil change. However, the car is already alerting me that it needs an oil change barely 1,000 miles later. ...
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Is there something that will need to configure with OBD2 or computer if I dissemble?

The new cars has a lot of electronic devices and computers. As I like to maintain my family's cars I would like to know if I don't need to plug any OBD2 or computer after assemble or fix the cars. I'm ...
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Manual ECU with Automatic Car

Have 92 Accord with 1.8 VTEC. The Installed Engine is From 98 Accord. The transmission is the original which came with 92 accord. This transmission is operated by Kick Down cable and does not have any ...
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Trip computer reported MPG with engine remap or chip

A question related to Car average mpg display correctness I suppose, but say if a piggy back chip (e.g. http://www.dieselandpetroltuning.co.uk/) was added to a diesel car with trip computer, would the ...
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2008 Kia: stalls at idle, disconnect battery reset computer, works now, good to go?

A 2008 Kia Spectra started stalling out when idle. Revving the engine as soon as it started would prevent stalling, but as soon as it dropped below 1500 or so it would stall out again. Check engine ...
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Where should I mount the engine management electronics in a 1993 Ford Mustang?

Bought myself a 1993 Ford Mustang (2.3L I4, the 5.0L V8 was sold with it but the car was an I4 from the factory, so it lacks the stronger brakes, suspension, etc. -- The engine would be a drop-in/bolt-...
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2answers
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Do I have to change my speedometer setting if I get larger tires?

I bought a jeep with very small tires (not sure the exact size). I recently bought a new pair of tires that are probably 2 or 3 inches larger radius. Do I have to update my jeep so the speed is ...