Questions & Answers for: ecm fail

blown fuse on ECMB in fuse block. No electricity getting to fuel pump. already changed out the relay. Is there a possiblilty of a bad PCM? The ECM has likely failed. Perform the K-Test on the ECM: The

...itself,if you are dealing with a failed injector,because its a solenoid dont be surprised that a ECM will have to be replaced, the only thing that protects the ECM is the injector driver circiut, ...

...Speed Input Circuit Range/PerformancePossible Causes:Engine speed sensor has failed or is damaged.ECM has failed.Sensor wheel is damaged or doesn-t fit properly.Sensor wheel spacer isn-t seated ...

no communication with the computer could have loose connection at ECM. check fuse and ground circuits to ECM.the ECM could have failed but let dealership use a diagnostic scanner to check CAN serial ...

...Light) Possible Causes - ASD relay circuit is open or shorted - Failed Auto Shutdown relay - Failed ECM Tech Notes Check all the ECM fuses, if the fuses are OK try replacing the ASD relay. P0688 ...

...still dont work 4x4 5.7 Check fuel pump relay. There are times a failed fuel pump may cause a blown ECM fuse. Usually ECM B or ECM / PCM 2 fuse will be blown. There are occasions the fuel pump relay ...

..., how do you fix it all refer to the coils A,B,C,D===causes wiring, ignition coils ECM for all to go out at once , I suspect a harness connection ot a failed ECM substitute the ECM ...

What are indications of a bad ecm? https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-engine-control-module-ecm Symptoms of Bad or Failing Engine Control Module ECM YourMechanic Advice

...on my 2010 CTS 3.0L It appears that the ECM is under the hood fuse box, but I cannot get the fuse box moved so I can replace the ECM. ECMs very rarely fail, have you proved it is not a wiring

...ECM/PCM, then do this procedure. During the procedure, if any READ DATA, WRITE DATA, or other data checks fail, note the failure, then continue. Connect the HDS to the data link connector (DLC) (A) ...