What is a ECM module?
An engine control unit (ECU), also commonly called an engine control module (ECM) is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance. The whole mechanism of the EEMS is controlled by a stack of sensors and actuators.
Where is the ECM on a Nissan Sentra?
1. ECM is located in the right side of the cowl top (behind the strut tower). For this Remove engine control harness bracket on the strut tower. Remove quick connector on the ventilation hose. Remove ECM fixing bolts and pull ECM out all the way.
Why is my Nissan ECM reset and reprogramming?
If the reprogramming means the update of new ECM software that fixes a bug, it means that Nissan already knew their ECM software bug before 2013. Then, why did not they fix the bug in 2013-2015 models?
How to change the ECM on a Nissan Leaf?
In ASIST, select CONSULT Utilities >> ECM/TCM Data. Then choose Model and Model Year. 3. Look for ECM Data Updates (listed by ECM P/Ns and vehicle configuration) in the top, center display panel of the ASIST screen. a. If there are no updates listed for your vehicle configuration, you do not have to reprogram the service replacement ECM.
What should I do if I need to replace my ECM?
1. Check if the vehicle you’re working on has “ECM based” NATS V2.0 or V5.0. a. If so, it will not start after you install a service replacement ECM. So you’ll have to re-register all ignition keys, including spare keys with CONSULT-II and the purple NATS card.
1. ECM is located in the right side of the cowl top (behind the strut tower). For this Remove engine control harness bracket on the strut tower. Remove quick connector on the ventilation hose. Remove ECM fixing bolts and pull ECM out all the way.
Do you have to reprogram a Nissan ECM?
Do not attempt to perform the ECM Reprogramming procedure with CONSULT-II connected to the gray CONSULT connector. See the appropriate engine service manual for further details if necessary. b. If your ECM is not listed in the “Details” panel, you do not have to reprogram the ECM.
In ASIST, select CONSULT Utilities >> ECM/TCM Data. Then choose Model and Model Year. 3. Look for ECM Data Updates (listed by ECM P/Ns and vehicle configuration) in the top, center display panel of the ASIST screen. a. If there are no updates listed for your vehicle configuration, you do not have to reprogram the service replacement ECM.
When does the ECM set p0101 on a Nissan?
I found that ECM set P0101 only when my car starts an engine. ECM has never set confirmed or pending P0101 during driving. There was no exception for more than 10 samples. So, I conclude that there is no drivability issue and my car may need to reprogram the ECU according to TSB from nissan.