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Please what is ECM and how can I check the codes

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It is the computer that controls your vehicles systems ie engine.
you will have to either take to somewhere like advance auto or autozone where the will download the codes for you for free or you can purchase a cheap scantool at any parts store and do it youself.

Posted on Dec 18, 2016

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Posted on Jan 02, 2017

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Toyota p1300


Error Code: DTC P1300
Description: Igniter Circuit Malfunction
Solution:
To repair the code please do the following:
1. Check spark plugs.
2. Check for open and short in harness and connector in IGF (Ignition Confirmation) signal circuit between ECM and igniter.
3. Disconnect igniter connector and check voltage between terminal IGF of ECM connector and body ground.
4. Check for open and short in harness and connector in IGT1 - 3 signal circuit between ECM and igniter.
5. Check voltage between terminals IGT1 - 3 of ECM connector and body ground.
6. Disconnect igniter connector and check voltage between terminals IGT1 - 3 of ECM connector and body ground.
8. Check for open and short in harness and connector between ignition switch and ignition coil, ignition coil and igniter.
9. Check and replace ignition coils with a good known one.
10. Check and replace ECM with good a known one .
Hope that works.
Thank you for visiting Fixya.

Apr 06, 2014 | 2001 Toyota Corolla

1 Answer

2002 Altima cranks no start. Dealer said that the bcm ecm and immobilizer all need to be replaced. Had to come up witht he money so I had the car towed back to house. Now the dealer is saying that the dash...


Did your Check Engine or Service Engine Soon light come on? If so, did you read the code stored in the ECM? If so, what was (were) the code(s). It's unlikely that the ECM and BCM would both completely fail at the same time. More info please.

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Check engine light indicates p700 code


Diagnostic Test Code (DTC) P0700 is an informational code that is stored in the Engine Control Module (ECM) That informs the diagnostic technician that there are codes present in the Transmission Control Module (TCM) and that the TCM has requested the Malfunction Indicator Lamp (MIL) (AKA - Check Engine Light) to be turned on. This is because the MIL is controlled by the ECM and cannot be turned on directly by the TCM. So, the TCM requests the ECM to turn the light on. To find out the nature of the failure that caused the P0700, one must scan the TCM to retrieve the fault codes stored there. Please note that MOST generic OBD code readers cannot access the TCM - this is the reason for the P0700 code to set in the ECM (to alert somebody with a generic code reader that further diagnosis is needed for the TCM).

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1 Answer

Ecu box passat


ecm goes bad it will go in limp mode, vechicle will run poorly check engine light will stay on vechicle wont start.you need to use a code scanner check for ecm fault code, if check engine light not turning on when you start vechicle could have blowed ecm fuse or wiring problem, could have loose connection at ecm electrical connector or ecm getting poor ground but first check for a defective ecm using a code scanner.

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Multiple engine codes 2001 chry town and country engine barely runs it surges, spits and sputters the main codes are po601 and po206


P0601 : ECM internal Failure.
it said that the ECM is unable to communicate with the SPI line.
probable causes:
shorted input sensor
shorted electrical circut
failed ECM .
------------ P0601 is Internal Controller Failure- Common repair is Install new PCM and program it. -------- The other code is related, Best thing to do, so you do not replace every part by trial and error, in this case have a pro hood up his computer and he can break it down to the main cause to fix that code, and the other one that is related. Thanks, MIke. Please rate my free advice accordingly

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1 Answer

Hi have a jaguae x type with fault code p1647 changed the sensor with the grey plug and light has *** bk on can u please help


Fault Code:- P1647 Indicates a Power-train fault


The fault is generally due to a problem in the Computer & Output Circuit area


Fault Description: ECM HO2 Sensor control malfunction -bank 2 upstream (2/1)

Action of ECM:- ECM Default:- HO2S 2/1 control circuit inhibited


After clearing the DTC, complete the Drive vehicle for 10 minutes
Check for a reoccurrence of fault DTC.


Possible Fault:- HO2 Sensor 2/1 heater failure HO2 Sensor 2/1 sensing circuit: short circuit to ground, short circuit to high voltage, open circuit ECM Failure

Jun 15, 2011 | 2002 Jaguar X-Type

1 Answer

When connecting code reader to ecm, code reader is giving error message that code reader is not connected and i have tried 3 different readers they all do the same thing,.note: service engine light is on...


Check to make sure that the fuse to the cigarette lighter is not blown or that something like a penny has not found its way in there and shorted out the fuse. Check all the fuses because it will throw the diagnostic tool off if they are blown. *** Please rate me on this answer.***

Jun 06, 2010 | 2002 Chevrolet Silverado 2500HD

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