Hello Nairalanders, I have a problem with my murano. The car starts and revs fine but won't throttle even when you pedal all the way down. The code suggests it is either the injector head or pedal position sensor. I was asked to reprogram first to see if it will correct the problem but the programmer said he couldn't communicate with the ECU after trying with three different equipments and then concluded that the brainbox is dead and will need to be changed. My dilemma is if it is the brainbox, how come it's starting very well and running except that you can't throttle the car. Any ideas, suggestions or solutions is welcomed. Thanks.

wiseguy:
Hello Nairalanders, I have a problem with my murano. The car starts and revs fine but won't throttle even when you pedal all the way down. The code suggests it is either the injector head or pedal position sensor. I was asked to reprogram first to see if it will correct the problem but the programmer said he couldn't communicate with the ECU after trying with three different equipments and then concluded that the brainbox is dead and will need to be changed. My dilemma is if it is the brainbox, how come it's starting very well and running except that you can't throttle the car. Any ideas, suggestions or solutions is welcomed. Thanks.

Post your scan result here.But something just caught my attention if he says he couldn't establish a communication between the scan tool and the ECU. how then was he able to pull out a fault error or was he guessing

The scan tool was able to pull out errors but when he connected two other devices that looked like computers to program the ECU, he got a communication failure message.
The codes are:
P2122
P2128
P2127
P2138
P1229
P0223
P0123
P2135
P1800
P1111
P0340
P0550
P0118
P0451

wiseguy:
The scan tool was able to pull out errors but when he connected two other devices that looked like computers to program the ECU, he got a communication failure message.
The codes are:
P2122
P2128
P2127
P2138
P1229
P0223
P0123
P2135
P1800
P1111
P0340
P0550
P0118
P0451

All these codes on only one car or are we talking about two cars here kindly post the description to the codes. Has the ecu been changed that he wants to programme the ecu

wiseguy:
The scan tool was able to pull out errors but when he connected two other devices that looked like computers to program the ECU, he got a communication failure message.
The codes are:
P2122
P2128
P2127
P2138
P1229
P0223
P0123
P2135
P1800
P1111
P0340
P0550
P0118
P0451

Only one car all this plenty fault codes? It's needs specialist attention......

mayor2013:


All these codes on only one car or are we talking about two cars here kindly post the description to the codes. Has the ecu been changed that he wants to programme the ecu

Almost all the codes are saying the same thing pointing at the throttle/pedal sensor. One is pointing at the camshaft sensor but that has been changed. The ECU was not changed but the mechanic did some work on the car like changing the pulley and crankshaft seal before the incident. When the mechanic finished the car started well but after some time could not throttle. So the suggestion to reprogram came up. But the programmer now says he can't communicate with the ECU and therefore the ECU is bad.

wiseguy:
The scan tool was able to pull out errors but when he connected two other devices that looked like computers to program the ECU, he got a communication failure message.
The codes are:
P2122
P2128
P2127
P2138
P1229
P0223
P0123
P2135
P1800
P1111
P0340
P0550
P0118
P0451

omo are these PIDs for one vehicle?
Daunting Car issue #2

wiseguy:
The scan tool was able to pull out errors but when he connected two other devices that looked like computers to program the ECU, he got a communication failure message.
The codes are:
P2122
P2128
P2127
P2138
P1229
P0223
P0123
P2135
P1800
P1111
P0340
P0550
P0118
P0451

With this array of codes, it could be the ECU really.

But before he proceeds to replace ECU, he should ground a couple of TPS pins and see if some if the codes change. If they don't, then my money is on the ECU.

Shalom

Kashif:


With this array of codes, it could be the ECU really.

But before he proceeds to replace ECU, he should ground a couple of TPS pins and see if some if the codes change. If they don't, then my money is on the ECU.

Shalom

If it is as easy as that this job for dey over sweet o

mayor2013:


If it is as easy as that this job for dey over sweet o

Yes, it is that easy. It is an easy and logical diagnosis. I use it, and it is solid.

You can ground or short signal voltage to power. Paper clips work well. Straighten and use it to short reference and signal female wire connectors from ECU.

Depending on which you use, the ECU will either set high or low voltage code. The idea is to send a known error to the ECU and see how it reacts. If the ECU is not able to tell that it's signal is out of range, then something is wrong with it. You can also detect any open or shorts this way.

It's street smart!

PS: in my initial post, I meant the TPS cables from the ECU

Your mechanic messed your car up when he worked on it you may need someone else to look through every th ing he to u he'd from the begining

Update: Finally, the ECU was changed and the car came back to normal. Thanks everyone.

wiseguy:
Update: Finally, the ECU was changed and the car came back to normal.
Thanks everyone.

Congrats! With such army of codes, the ECU had got a mind of it's own.

wiseguy:
Hello Nairalanders, I have a problem with my murano. The car starts and revs fine but won't throttle even when you pedal all the way down. The code suggests it is either the injector head or pedal position sensor. I was asked to reprogram first to see if it will correct the problem but the programmer said he couldn't communicate with the ECU after trying with three different equipments and then concluded that the brainbox is dead and will need to be changed. My dilemma is if it is the brainbox, how come it's starting very well and running except that you can't throttle the car. Any ideas, suggestions or solutions is welcomed. Thanks.

Wanted to contact U but I couldn't. I'm having same issues now

wiseguy:
Hello Nairalanders, I have a problem with my murano. The car starts and revs fine but won't throttle even when you pedal all the way down. The code suggests it is either the injector head or pedal position sensor. I was asked to reprogram first to see if it will correct the problem but the programmer said he couldn't communicate with the ECU after trying with three different equipments and then concluded that the brainbox is dead and will need to be changed. My dilemma is if it is the brainbox, how come it's starting very well and running except that you can't throttle the car. Any ideas, suggestions or solutions is welcomed. Thanks.

I deal on brainbox (Ecu ).. it could be brainbox or wouldn't but I suggest u get a good nissan electrician... we have too many fake electricians here in Nigeria that have no Idea about nissan. . Or u can text me on whatsapp for a recommendation

wiseguy:
Hello Nairalanders, I have a problem with my murano. The car starts and revs fine but won't throttle even when you pedal all the way down. The code suggests it is either the injector head or pedal position sensor. I was asked to reprogram first to see if it will correct the problem but the programmer said he couldn't communicate with the ECU after trying with three different equipments and then concluded that the brainbox is dead and will need to be changed. My dilemma is if it is the brainbox, how come it's starting very well and running except that you can't throttle the car. Any ideas, suggestions or solutions is welcomed. Thanks.

Bro, I am having this same issue with my 2006 Murano

Cutetmoney:

Bro, I am having this same issue with my 2006 Murano

Why not create a fresh thread to gain more attention

autologic:

Why not create a fresh thread to gain more attention

I've done that previously and I was mislead to get a gearbox, by one Tech, which am still regretting

Cutetmoney:
I've done that previously and I was mislead to get a gearbox, by one Tech, which am still regretting

I feel ur pain BRO.

obekediamondfuto:


I feel ur pain BRO.

Thanks Bro, but What I actually need now is Solution

Cutetmoney:
I've done that previously and I was mislead to get a gearbox, by one Tech, which am still regretting

But I explicitly preach a whole epistle advicing you against fallen victim to sugesstion of thowing parts just based on mere codes scanning to solve problem,, especially for problem that has not been seen and fully tested to avoid story that touches the heart but u wouldn't listen .
(https://www.nairaland.com/509862/murano-transmission-problem/2)

autologic:

But I explicitly preach a whole epistle advicing you against fallen victim to sugesstion of thowing parts just based on mere codes scanning to solve problem,, especially for problem that has not been seen and fully tested to avoid story that touches the heart but u wouldn't listen .
(https://www.nairaland.com/509862/murano-transmission-problem/2)

Thanks a lot for Ur advice, it's been fully restored (fixed) I even had to drive it from Anambra to Abuja and back to Anambra for proper testing(test running)

Cutetmoney:

Thanks a lot for Ur advice, it's been fully restored (fixed) I even had to drive it from Anambra to Abuja and back to Anambra for proper testing(test running)

Thanks for the feedback.it is good to hear that your car is fine now

Cutetmoney:

Thanks a lot for Ur advice, it's been fully restored (fixed) I even had to drive it from Anambra to Abuja and back to Anambra for proper testing(test running)

Bro what actually was the problem? And what was the fix? You should also hint us nau for benefits of those faced with similar issues

Thanks