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Questions tagged [electronic-control-module]

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1995 VM Jetta/Vento - ECU pinout for my car

I own a 95 Vento GL (Jetta for the american market), with an 1.8 8v, 90hp ADD model engine. The ECU for this model is marked with part number 037 906 021A. I have checked with VAG-COM software and it ...
Carlos Andres's user avatar
3 votes
0 answers
153 views

How to find out if your ECU has been reflashed?

Vehicle 2010 Audi A4 Quattro, 2.0L TFSI engine, automatic transmission, 180,000 km. Recent History Friend bought this car used 2 months ago from a private party. The check engine light comes on with a ...
tlhIngan's user avatar
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3 votes
0 answers
212 views

when I plugged in my OBD scanner, I got not connected to the vehicle and the dashboard going crazy

when I plugged in my OBD scanner, I got not connected to the vehicle and the dashboard going crazy, and when I unplug the ODB scanner everything going back to normal... the vehicle I am talking about ...
Zaid M. Al-Zubaidi's user avatar
3 votes
0 answers
593 views

Mk4 Astra judders, runs hot p0420 p0170 p1130

I have a Mk4 Astra 1.8 petrol 2002 130k Miles. When starting the idle speed revs up & down, it judders when driving the first 500metres. Plenty of oil, water was a bit low. During a 2 hour ...
Hamish_Fernsby's user avatar
3 votes
0 answers
334 views

SilLabs OBDscan can't connect to Alfa 147: latency too high!

I have an OBD Scan tools built around the Silicon Labs CP210x chipset, but I can't get it to connect to my car at all. When I connect the scan tool to my laptop USB port I have a driver installed and ...
lonerunner's user avatar
3 votes
0 answers
308 views

Overwhelming the Eng. management system, is there specific course of action to recover faster

Citroen C4 2005, Petrol, UK Yesterday I managed to overwhelm my car (for the second time I've been having it, first time was about half an year go). What happened was I was at a rather busy stop ...
Иво Недев's user avatar
2 votes
1 answer
320 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 ...
Stephen Arsenault's user avatar
2 votes
0 answers
342 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 ...
giannisf's user avatar
  • 141
2 votes
0 answers
175 views

05 Buick Rainier engine reduction how to fix?

I'm having a problem getting the engine power reduction to go away. Usually I just have to turn off the vehicle and crank it back up and it's fine. Not this time. We have tried a number of things, ...
Linzy's user avatar
  • 21
2 votes
1 answer
155 views

110cc scooter sputters under acceleration. Resetting ECU a temporary fix

This is driving my crazy. The dealership is just throwing parts at it. First time, they hooked it up to a little cylinder which has a guage and is connected to pressurized air and connects to the fuel ...
JJrussel's user avatar
  • 121
2 votes
0 answers
82 views

No resistance measured between two electrical parts, ECU fault?

I'm troubleshooting a car with a faulty Camshaft Sensor error. I used the factory test plan to test the wiring between the sensor & ECU. Here is the wiring: ECU Pin87 -> Wireloom Pin 87 -> ...
user2727691's user avatar
2 votes
0 answers
95 views

Why is this RPM graph squarewave?

'07 Subaru Outback 3.0R 5 speed auto. I am logging using the excellent RomRaider and was kind of surprised that when graphed RPM looks like a square wave in most situations, don't know if it was ...
ajayel's user avatar
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2 votes
0 answers
78 views

Why would this happen:

If anybody could help me understand this behavior, I'd be grateful: 2003 R1 5PW, Fuel-injected, has an alarm/immobilizer fitted, doesn't report any fault codes: Motorcycle would occasionally (three ...
Jay's user avatar
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2 votes
0 answers
4k views

U0100 Toyota Aygo CAN Stop Communication or DTC Diagnostics, which is right?

I spent a lot of time trying to resolve some problems with a 2006 Toyota Aygo. The most important or significant code it has is U0100: No communication with ECM/PCM A. Information for 1KR-FE engine, ...
ElectronicsNewbie's user avatar
2 votes
0 answers
233 views

Car keeps breaking fuel injectors?

Ok so i'm having quiet a strange issues with one of my cars (08 X5 E70 4.8L V8) that may be worth discussing. It seems to keep "blowing" through injectors on only one bank. Suddenly i noticed CEL and ...
roycerobinsion's user avatar
2 votes
0 answers
135 views

Fuel Map and fooling the speed sensor

Sorry, I didn't know what kind of title I could put for this. I have a '97 Subaru Impreza WRX STi and, as a technical project, I would like to remove the potential (haven't checked yet) 180km/h ...
P1kachu's user avatar
  • 457
2 votes
0 answers
3k views

OBD request trouble code mode 3 and mode 7

I'm trying to get my own app on phone to read Trouble code in car... I see that i have 3 mode to do this... first is to use the mode 01 with command 01 (but this command is generic) or the mode 03 and ...
Dario's user avatar
  • 235
2 votes
0 answers
119 views

Emissions per mile of high MPG lean-burn gas-powered cars versus standard gas-powered cars

I am wondering if there have been studies or calculations of the NOx emissions per mile of high MPG lean-burn gas-powered cars versus standard gas-powered cars. Honda made some great lean-burn cars ...
user avatar
2 votes
0 answers
243 views

Cadillac CTS "Traction Control Off" displayed after driving 15 mins

After driving 15 mins the "Traction Control Off" light is displayed on dashboard and radio displays "Service Brake Assist". All go away after engine is turned off for about 20 mins. It recently got ...
ExceptionalException's user avatar
2 votes
0 answers
1k views

2003 Honda Accord not responding to accelerator

2003 Honda Accord, a few months ago we started having problems with it. All of a sudden the CEL and traction control light came on with the d4 light blinking. Also it would idle low, shift hard, and ...
Bobbie's user avatar
  • 21
2 votes
0 answers
2k views

Corsa C electric power steering ECU 12V power polarity

I need to know the power polarity of Corsa C Electric Power Steering ECU 12V power connector. I suppose the power is the right connector in following photo (it has 2 flat pins vertically aligned): If ...
Kozuch's user avatar
  • 1,305
2 votes
0 answers
230 views

Honda Civic Mk8 FK3 interfacing with ECU/body computer

I wanted to create a few improvements for a FK3 Civic, such as: - automatic door locking - automatic cornering lights For those, I need to be able to read few parameters from the car's computers: - ...
StanTastic's user avatar
2 votes
0 answers
48 views

'93 Cavalier ECU issue

I have an old cavalier that loses power to the ECU randomly. It can take many attempts to start again. I do not lose battery power to the lights or stereo. If I flick the keys to the on position ...
Ross's user avatar
  • 21
1 vote
0 answers
15 views

Odd wiper problem on Mercedes E320 W211 - diagnostic message 'Communication with componentM6/1 wiper motor interrupted'

I have a strange issue with my wipers on my Mercedes E320 W211, they seem to have a mind of their own. No matter what I set the stalk to: off, intermittent 1, 2, on low speed or on high speed I get ...
GdD's user avatar
  • 17k
1 vote
0 answers
16 views

Nissan Xterra 2006 ECM Replaced with used one and needs some kind of programming? Not the keys because I tried that. Engine light is on and key Light

Hello and thanks for reading my post. I bought a ECM from Ebay, the numbers matched the ECM 5E MEC-451 I installed it, the fans turned off instantly thankfully because the old one had the fans running ...
Robb's user avatar
  • 11
1 vote
0 answers
24 views

PCM blew while on fwy. Now blows 1 second after starting

2004 gmc envoy XUV 4.2 Running perfect with NO CODES then PCM-1 fuse blew at 70mph. I replaced fuse, started vehicle, it runs for ONE SECOND and blows the PCM-1 fuse again.
shane's user avatar
  • 11
1 vote
0 answers
47 views

Ford PCM how to open

I have a problem with a PCM hardware VK2-C3812(8C3A-12A650-BFD). Three connectors on the "front". I get the case to separated alright but the three connectors are glued to the upper(thinner) ...
George Csahanin's user avatar
1 vote
0 answers
53 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?
Henry's user avatar
  • 111
1 vote
0 answers
355 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 ...
jamie1989's user avatar
  • 123
1 vote
1 answer
180 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
Eugenijus 's user avatar
1 vote
0 answers
333 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 ...
Bolo59's user avatar
  • 11
1 vote
0 answers
371 views

2010 Dodge Avenger : Battery light coming on, battery discharging

The patient is a 2010 Dodge Avenger R/T with the Federal-spec 2.4L I4/4 speed automatic. It has ~117K miles. My son's original complaint was that the battery light had come on while driving to an ...
ggariepy's user avatar
  • 221
1 vote
0 answers
103 views

ECU leaks current

Im the proud owner of an ER-6F from 2009. I just tested my bike for leaking current and noticed it did. When pulling the fuses I found the ECU to be the culprit. I assume this is not normal. What do i ...
Andreas Damen's user avatar
1 vote
0 answers
92 views

Can't find replacement ECU/ECM

I recently had some water damage to my 2016 Hyundai I-30 ECM and now I need a replacement, however I'm unable to find the exact Part using the part number. My part no. is 39127-2b693 but no luck ...
Jay P's user avatar
  • 11
1 vote
0 answers
86 views

Dodge Grand Caravan Won't Turn Over

I have a Dodge Grand Caravan 2001 that was having running rough and the exhaust smelled like raw gas. I replaced some sensors and that didn't work so I decided to replace the ECU. I got a new ECU from ...
Isaiah Stoddard's user avatar
1 vote
0 answers
2k views

Mitsubishi mirage Code P1590 A/T torque reduction req. comm

The check engine light on my mitsubishi mirage is on and upon scanning the codes, I am getting the following codes: U0131 EPS CAN timeout U0101 T/M CAN timeout U0121 ABS/ASC CAN timeout P1590 A/T ...
Sher Chuha's user avatar
1 vote
0 answers
154 views

What are the factors that rev hang depend on? Does rev hand depend on the engine load?

I know that rev hangs are intentionally introduced to modern vehicles that operate on electronic throttle bodies, by programming the ecu to close the throttle valve slowly (in gasoline engines) even ...
Abhishek P G's user avatar
1 vote
0 answers
13 views

Used motor and trans in my 09 escape limited 2.5l. Does it need to be reflashed?

It will start if starter relay is jumped and stay running but will not Shift into gear. Replaced the starter switch with new one and new starter relay. No power to the starter switch as I tried to ...
Jeremie Sims's user avatar
1 vote
0 answers
40 views

I have a 2000 ford contour 2.0 runs fine but will not get any faster then 40 mph no matter how much throttle I give,

Motor runs fine transmission shits fine has full rpm range all gears but at 40 it will not run any faster no matter how much throttle you give
Beau's user avatar
  • 11
1 vote
0 answers
6k views

Why Long Term Fuel Trims Remains in Negative?

Dear Experts here im attaching log of 1SZ-FE, 1.0L engine for your kind consideration, please advice why my LTFT remains in -ive though MAF, Intake Air Temp sensor, ECT sensor and O2 sensor is working ...
Asghar Dev's user avatar
1 vote
1 answer
58 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 ...
Dylan Cross's user avatar
1 vote
0 answers
102 views

I have a seemingly very hard wiring problem to solve

Further to my last question : I have a Renault Clio 1.2 2010 that keeps coming up with a P0638 (Throttle Actuator Control Range/Performance) error (according the the OBD2 device I have). One thing I ...
Mongus Pong's user avatar
1 vote
0 answers
143 views

2004 Vitz door/trunk control(ler?) problem

I have a 2004 Vitz which uses a key with built in 1 button remote. This remote is supposed to unlock the doors and allow the boot switch to operate. (Car is started with a regular key) The doors work ...
davidgo's user avatar
  • 133
1 vote
0 answers
19 views

ECM questions on 1986 G30

Dumb question perhaps.....but I've gotten different answers. Does my 1986 G30 motorhome have an ECM....if so where is it located. Everything I've read says that a low idle problem cannot be adjusted ...
Jim624's user avatar
  • 31
1 vote
4 answers
8k views

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 ...
Xdiagprovn's user avatar
1 vote
0 answers
1k views

Which Engine Control Module (ECM) Software version do I need to fix the Emissions Service Action 24DR for 2014 Volkswagen Passat?

Which Engine Control Module (ECM) Software version do I need to fix the Emissions Service Action 24DR issue for 2014 Volkswagen Passat? Some details below: The Emissions Service Action 24DR issue: ...
Franck Dernoncourt's user avatar
1 vote
0 answers
44 views

Engine not rev over 3500 after new ECU installed same number

I have Honda civic vtec 1999 with D15 engine installed. ECU/PCM reporting error and mechanic told me this computing having issue in IC I bought new ECU same number but after connecting, car engine ...
Adeel Mughal's user avatar
1 vote
0 answers
43 views

Is it possible to reset a modified Airbag Control Unit to factory default?

I discovered my BMW E46 320d has been in a small crash and the airbag was deployed. The previous owner didn't fix it correctly and reused the airbag and modified the Airbag Control Unit (probably just ...
Daniel Marques's user avatar
1 vote
0 answers
251 views

Car Jump Started in wrong way

We switched the jumper cables when trying to jump start my Altezza 4 cylinder. Main fuse and other fuses were blown. I replaced all the damaged fuses and battery. When we eventually got the car to ...
Gots's user avatar
  • 11
1 vote
0 answers
451 views

Fault code retention on scania

I had an incident in a Scania which was showing an "ABS Malfunction" warning on the dash at the time. My inquiry is if it is possible to "historically" look into the system and see the fault and any ...
Tempus's user avatar
  • 111