Question about 1993 Geo Prizm

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ECM module? (ecu/pcm)etc.?

How to remove eec module

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Remove screws, unlock connector to it and retract them
and it out.
its just a black box, some screws and a huge connector(s)
step one is pull battery neg lug first.
then remove ECU.

Posted on Apr 18, 2016


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Posted on Jan 02, 2017


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I need to identify EEC or PCM module on 1994 Ford Ranger. Could you show me a picture and describe it's location?

The PCM /ECM is located just to the right of the master cylinder next to the inside of the front fender, it is a large connector with 60 pins, it is a rectangular shape, see photo below.

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Ecu/ecm/pcm what will have to be done to it?

You'll have to go back and get the body control module/integrated control module. If you have a factory radio, you might want to grab that also, yours won't work with the other computers. Once you have all that, start replacing them in your car. The key/immobilizer sends a signal to the BCM. If it is right the BCM sends a signal to the PCM. IF that is right, the PCM lets you start and drive the car. Many wires to check before spending money. Known people to do this only to find out they had one broken wire that shut down the system.

Apr 13, 2016 | 2006 Nissan Sentra 2.5

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Can I get a computer module ECM for 2002 Nissan pathfinder manual transmission

get it from nissan parts store or get a good unit from the wreckers
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Where is the ECM located?

How To Change The PCM On A Chrysler PT Cruiser ...

? 14:05
Jul 24, 2014 - Uploaded by The Hapless Housewife
How To Change The PCM On A Chrysler PT Cruiser ... things wrong with my car now, but had I replaced the PCM (aka) ECM a long time ago, ...

Chrysler PT Cruiser Engine Computer Module ECM PCM ... > ... > Engine Computers

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Chrysler PT CRUISER Engine Computer Module ECM PCM ECU - "Plug & Play" in eBay Motors, Parts & Accessories, Car & Truck Parts ' eBay.

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Dec 30, 2015 | 2002 Chrysler PT Cruiser

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Working in a mazda mpv 2001, i cant find the ignition control unit, when i look for the part on ebay they sell the part as: ECU-ECM-PCM, question: is the ignition control unit inside the ECU-ECM-PCM?

It appears from a wiring diagram that there is no ignition control module. The ignition coils' primary circuits are grounded through the PCM. And the wires to the sensors are all from the PCM.

Here is a link if you want to see all your wiring diagrams. I found the above information under System: engine; Subsystem: fuel controls.

Free wiring diagrams and TSB's for every make and model:

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Where is the location of the engine data sensor on a 1994 ford escort hatchback lx

Which sensor? There are several 'engine data' sensors. What particular data is it?

Cam position
Crank position
Coolant temerature
Air temperature
Knock sensor
Oil pressure

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Where is the ECU located on a 1992 ford explorer and what does it do?

What your Explorer has is actually called the EEC-IV. It is sort of like an ECU. The EEC stands for "Electronic Engine Controls". Your EEC-IV Does this:
  • Powertrain Control Module (PCM)
  • Throttle Position (TP) sensor
  • Mass Air Flow (MAF) sensor
  • Intake Air Temperature (IAT) sensor
  • Idle Air Control (IAC) valve
  • Engine Coolant Temperature (ECT) sensor
  • Heated Oxygen Sensor (HO2S)
  • Camshaft Position (CMP) sensor
  • Knock Sensor (KS)
  • Vehicle Speed Sensor (VSS)
  • Crankshaft Position (CKP) sensor

The EEC microcomputer circuit processes the input signals and produces output control signals to the fuel injectors to regulate fuel discharged to the injectors. It also adjusts ignition spark timing to provide the best balance between driveability and economy, and controls the IAC valve to maintain the proper idle speed.
The EEC is located in the engine compartment. Post your engine size and I can tell you where it's at.

Jul 22, 2013 | Cars & Trucks

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Where is the pcm/ecm fuse located on a 1990 E-350?


Nov 21, 2011 | Cars & Trucks

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Where it the location of the transmission ecu for suzuki aerio 2003

its called the TCM. (on most cars now, its inside the PCM)
not this car, in USA. as above gets wrong.

The Engine Control Module (ECM) is located in the passenger side of the instrument panel behind the glove box.

the TCM is center of dash or console. not where ECM is..located. sorry, !
on 2.3L and 2.0L USA cars.
its here.
right dash is ECM
center is TCM. fact. this page is from the real service man.
seen here,


Oct 18, 2010 | 2003 Suzuki Aerio

1 Answer

Location of ecu on a 2005 ford freestyle

Keep in mind the definitions:
* ECM = Electronic Control Module (prior 1995 computer, OBD1)
* PCM = Powertrain Control Module (1995 and newer, OBD2)

Ford Freestyle 2005 - Powertrain Control Module The PCM is located in the ine compartment, passenger side, mounted to the cowl. Removal & Installation procedure:
  1. Retrieve the module configuration.
  2. Remove the cowl panel grille.
  3. Disconnect the 3 PCM electrical connectors.
  4. Remove the bolt and the PCM.
To install:
  1. Installation is the reverse of removal.


Hope helps (rememnber rated this).

Jul 14, 2010 | 2005 Ford Freestyle

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