Questions tagged [electronic-control-module]

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4 answers
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Can the original ECU be replaced with other ECU codes on the same vehicle?

Here is the original ECU of the car, but I have a question whether it can be replaced by another ECU with the same MEG code 17.9.12.1 but different from the 39110-04006 line (by uploading the original ...
0 votes
2 answers
746 views

testing for voltage

I am sitting with a problem that is slowly draining my wallet. I drive a opel corsa utility 14i, and after having to replace a blown head gasket, all sorts of gremlins started popping up. First no ...
0 votes
1 answer
72 views

Ways to log data on Suzuki GSXR600-R Engine

I am working on a university project where we are building a race car with a Suzuki GSXR600-R Engine and ECU. I am wondering if there is any options for how i am able to record data off of this onto a ...
1 vote
0 answers
33 views

GMC c5500 TopKick

There is a transmission problem and a code on this truck but my scanners cannot read the PCM codes. What scanner should I use to read PCM codes on a GMC c5500 TopKick?
0 votes
1 answer
2k views

Can I find out the unique code of my original car ECU?

I recently got my ECU changed although it was not causing any symptoms. I was still able to use my car with my original ECU. After getting my ECU changed, my original ECU does not seem to work anymore....
0 votes
0 answers
25 views

Is it required to claim an address with J1939?

I'm working on an ECU from a car engine. When powering the ECU I get a J1939 NAME message. I was wondering do I have to do the same by sending an address claim with my nodes NAME or not? The reason I'...
0 votes
1 answer
698 views

how to minimally connect MT-05 so that the LIN communication works

I have an MT05 (DELPHI-II) on the my desk. I tried to communicate with him via LIN, but he didn't answer. I provide the following links: ground, power, ignition and LIN (image below). When I connect ...
0 votes
0 answers
26 views

Can a cheap OBDii reader plus an adapter cable read the fault codes from a 1999 BMW 316 compact?

I have a 1999 BMW 316 compact auto (e36) with a minor engine problem, I think it goes into "get you home mode" until it has warmed up. I also have a cheap Elm327 WiFi OBDii Interface ...
0 votes
0 answers
24 views

Engine swapped my KIA but dont get a spark

I engine swapped my KIA optima 2.4L N/A with the 2.0L turbo variant, however when I use the original 2.4L N/A ECU I get spark from the plugs but when I swap the ECU to the 2.0L turbo variant I get no ...
2 votes
1 answer
124 views

VIN Programming for new ECU on 2010 Jeep Wrangler 3.8l w/ Manual Transmission

I've run into an issue with a 2010 Jeep Wrangler. We've recently replace the ECU with a brand new one from the dealer and unfortunately, it was not pre-programmed for the vehicles VIN. All local ...
0 votes
0 answers
10 views

2017 VWPassat RLINE 1.8T

I basically put some acidic and corrosive fluids inside of my windshield wiper reservoir tank didn’t notice it until a few weeks later and plenty of trips, using my fluid and cleaning my windows that ...
1 vote
1 answer
217 views

How does ECU know the hand brake is on?

I was reviewing the data around the DTC event, and it said the hand brake was on. I assumed it was a software bug, because I was sure the hand brake was off, but today after jacking up the rear I ...
1 vote
1 answer
44 views

'09 Prius II - No Start. Hybrid light and CEL on

I got a new (used) prius a couple weeks ago. Apparently sold by a weasle. It's never started reliably, and the red triangle light comes on / off. Jumping it would start it though. I replaced the low ...
1 vote
1 answer
63 views

Help Identifying Wiring Harness

I need to find out what this goes, the year and I think it’s to a corvette eco and wiring harness but don’t know for sure Help
0 votes
1 answer
129 views

'00 Malibu no crank replaced ignition completely now worse. Help!

2000 3.1 V6 Malibu – I cannot get the engine to crank. What I have done in the last 2 months; Replaced the battery – tests @ 12.98V cables off, 12.78V cables on, 12.58V with key in (KOEO) position ...
0 votes
1 answer
162 views

ECU tuning exhaust - why?

When a sports exhaust is fitted to a car apparently a re-tune of the ECU is required. For a simple example consider a regular unmodified normally aspirated petrol car which then has a sports exhaust ...
1 vote
1 answer
27 views

Engine swap & ecu

So I was thinking about putting a vw 2.0t into my 1999 eclipse gs. Would I have to get a standalone ecu or can I wire in the engines ecu in place of the eclipses oem. I'd be able to figure everything ...
0 votes
2 answers
188 views

97 Tahoe and 99 Tahoe different between the ecm

Need to know what the difference between a 97 and 99 Tahoe Ecmengine control module most know the difference 99 and 97
0 votes
1 answer
672 views

Replace fuel injector 2013 Ford C-Max Energi (and enter calibration code)

I have a 2013 Ford C-Max Energi (US-California) with about 150kmi, mostly highway commute miles, great shape overall. We get an injector 3 code maybe once every six weeks. We put in a bottle of STP ...
0 votes
1 answer
423 views

Secondhand ECU recoding

I have a Passat 1.6 blue motion 2014 and the car has suddenly becomes immobile when trying to start and responds with many warning lights,on occasions it does start and run but not for long.I have ...
0 votes
1 answer
125 views

2012 Ford Explorer XLT v6 Misfiring and Bank 2 Air/Fuel Ratio Imbalance

Have had a P0306 and a P0316 error codes for a while now and have changed the spark plugs, coils, intake manifold gasket, checked injectors and changed the injector for the cylinder misfiring(6). All ...
0 votes
1 answer
52 views

Blower motor or resistor failed?

Yesterday my blower motor suddenly stopped working when I started the car in the morning and my climate control display started flashing (indicating a fault). I immediately suspected a faulty blower ...
0 votes
1 answer
746 views

(2010 Chevy Malibu 2.4) No crank/No start; only 7.6 volts to pcm

Hello everyone I’ve recently purchased this car for a great price, the last owner I believe tried to repair it himself and gave up. I’ve found a post on here very very similar to mine found here I’ve ...
1 vote
1 answer
91 views

If I change ecu and ignition with the keys wil engine start or will need coding or change pump.ldv van with transit engine ECU and immobiliser

If I change ECU and ignition with keys will engine start or will need coding or change and fuel pump . it's ldv convoy 2004 with transit engine ECU and immobiliser
0 votes
1 answer
280 views

What OBD tool I can use to retard/advance ignition timing? I like to experiment on GM Suburban to burn hydrogen instead of gas

I know Hydrogen burns much faster, so in order to use this fuel in a modern car, the ignition timing tables must be modified. Is it possible to modify the timing so the ignition happens after tdc or ...
0 votes
0 answers
67 views

2017 Ford explorer HVAC blower motor will occasionally start when the motor starts however will turn off shortly after

I have a 2017 Ford explorer which has an intermittent issue with the blower motor. About 95% of the time when starting up the car, the blower motor will not start at all and will not respond to any ...
0 votes
0 answers
35 views

Got a new ECM for my 2012 chevy malibu LS (flex engine) and it is showing codes for the crank shaft sensor

So the car will run and drive(mostly) but has codes flashing saying the "crankshaft sensor" is unlearned and keeps going into limp home mode. Does it need to be programmed again? It was ...
1 vote
2 answers
572 views

What kinds of tuning can ruin a car's ability to pass emissions testing?

Suppose I want to tune a car for performance, like doing an ECU re-map for a Toyota Supra. Could this affect the car's ability to pass emissions testing? If so, how? And in general, what kinds of ...
0 votes
0 answers
837 views

Understanding ECU hex changes for language change

Is there a way to understand the ECU files hex changes applied by the software? I'm new to ECU files and struggling to understand possible areas of interest in the file. For example, when the language ...
1 vote
1 answer
207 views

I replaced the PCM with one programmed to my vin but won't run

I ordered a preprogrammed to the vin# PCM for my 03 GMC Sonoma SLS after I installed it my truck will turn over but won't run, I haven't seen a padlock on the dash but the security light above the rpm ...
1 vote
0 answers
54 views

How to find the typical ranges for sensor values?

I've recently got an OBD scanner and have found some of the live data streams to be very useful, I was monitoring the timing advance value and observed it fluctuating at idle by 10 deg or so the range ...
1 vote
1 answer
39 views

Multiple sensor returns on same wire

How does a PCM (Powertrain Control Module), a.k.a. ECM, know which sensor is which when multiple sensors' return signal is on the same wire? I have a 2004 F150 wiring diagrams manual and am perplexed ...
1 vote
2 answers
66 views

ABS ECU command while bleeding brakes

My OEM scanner gives me the option to command the ABS system to do something important while bleeding brakes. In the past (before I owned this scanner) I seemed able to bleed the brakes fine on the ...
1 vote
1 answer
35 views

2012 dodge charger 5.7 automatic

Installed new ecm and pcm already flashed by seller. Dash displays message "press clutch and press start button to start " car is automatic. No crank u0100
2 votes
2 answers
562 views

Charging car battery with charger without disconnecting from car

Got a Toyota Corolla E170 and it is only used for highway travels twice a month. Car has a tracker installed as well. I want to give the battery (lead acid 46AH) a top up using battery charger (10A) ...
0 votes
1 answer
28 views

I have a 2000 Jetta 1.8t. can I use a computer from a 2018 Jetta 1.8 t? And if so are the tunes different?

I have a 2000 Volkswagen Jetta 1.8T can I use a computer out of a 2018 Jetta same motor if so what are the advantages or disadvantages?
0 votes
0 answers
48 views

I bought a used ECM off eBay for my vehicle. Same year, engine, options everything as mine. Do I still need to have it flashed to my car?

I bought an ECM off eBay for my 2004 Durango, donor vehicle is the same year, same engine (5.7), same tire size, same submodel. I think the only difference is the mileage, Do I still need to have it ...
3 votes
1 answer
262 views

How does a typical OBD communication start?

I'm trying to understand how, at the level of SID (Service Identifier) ​​and PID (Parameter Identifier), a communication must start between an external scan tool and any vehicle ECU (Electronic ...
-1 votes
1 answer
126 views

Daihatsu Materia 2005 model 1.5 engine smother while driving

we have a Daihatsu materia 2005 , we replaced the plugs,cam sensor , petrol pump, body sensor, air intake temp and catelis converter. The car drive fine when cold, but after a few kilometres it doesn’...
1 vote
2 answers
2k views

Delphi MT05 ECU mph to kph

Is there an ignition key sequence for changing MPH to KPH reading for a Delphi MT05 ECU? The bike is a Brixton BX125, had to perform a hard reset of the ECU to clear out a fault code and that switched ...
0 votes
0 answers
40 views

2001 Manual Mercedes C220 CDI - ECU replacement

Well bring a really typical blond I switched the jumper leads onto the wrong terminals on the battery.Red to black and Visa Versa. I blew up the on board computer. Hence I blew up the ECU. I really ...
21 votes
4 answers
23k views

How does the car's ECU detect a misfire?

I was wondering what the specific mechanism used by car ECU's to detect misfires is, or are if there is more than one method.
1 vote
1 answer
35 views

ECU update rate?

('07 Cobalt LS, 2.2L Ecotec) Using an OBDlink SX USB adapter and their OBDwiz app on an old laptop, I get the chart below. Engine is at steady (800 rpm?) idle, closed-loop. The displayed data has ...
1 vote
0 answers
179 views

Why is knock sensor tripping "check engine" light but only on warm-up (10 min/1 mi)

2011 Honda Pilot 4WD shows P0325 code but only until the car warms up (10 mins/1 mile). Reset with OBDII the code does NOT come back on. 87 octane gas from many stations in a 50 mile radius. Code does ...
0 votes
1 answer
406 views

Can an ELM327 adapter be used to flash a VIN?

Can a Bluetooth ELM327 adapter be used to flash a VIN? It's claimed here that The vin number is about the only thing in the PCM that's not a protected value.
1 vote
1 answer
145 views

Check beforehand if will pass emissions test?

How can I check, using an Bluetooth ELM327 OBD-II dongle, whether my car will pass an emissions test?
5 votes
2 answers
1k views

Original Ecu swap back into my car with correct VIN

I have a 2015 Ford fiesta SE. I purchase a ECU online which I had to give my VIN# for programming. When I receive ECU in mail install I'm my car,car didn't start so I had locksmith to program my key ...
4 votes
2 answers
1k views

Vehicle is stationary but live data from ECU says Vehicle Speed is 255 km/h, throwing codes P0717 & P0793 and no reversing

I'm repairing Toyota Harrier ACU# (Automatic transmission) with no reversing problem. When gear is shifted to R she throws codes P0717 (input speed sensor A no signal) and P0793 (Intermediate shaft ...
2 votes
0 answers
231 views

No voltage between ECU GND and 5V

I had a short circuit problem with my car because of a faulty fuse and some of the engine harness wires melted together. I repaired the harness the engine starts normally but I am getting Signal high ...
0 votes
2 answers
171 views

Ford F150 2009 will not start!! (Has power)

Last update: we got our truck back and it was that someone who had checked about the lights "accidently" changed fuses out of place and some went missing. It works now. Update 2: We gave up ...

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