P1122- ETC PERFORMANCE PROBLEM P1126- ETC MOTOR OPEN CIRCUIT/THERMOSTAT FUNCTION .

[Lipsylee]

Right I have replaced the throttle pedal and sensor ect .

Done throttle reset and throttle open close procedure .

 

Now I have a the lights on still but I'm actually getting a little response from the accelerater pedal , it's actually responding going up to 1500 rpm when foot is to the floor so my mechanic plugged his snap on diagnostics in and the two fault codes have gone and now I have two different fault codes that wasn't there previously .

The codes are :

 

P1122- ETC PERFORMANCE PROBLEM

P1126- ETC MOTOR OPEN CIRCUIT/THERMOSTAT FUNCTION .

 

The throttle body is not opening when I put my foot down could this be the problem do you think ?

Thanks lee.

[Lipsylee]

Twisted the harness to the throttle body and nothing either !

[Lipsylee]

Today I changed the throttle body and done re learns ect and guess what --- nothing it's still the same

 

Either my ecm is bad or there must be a bad wire in the harness from the throttle body .

 

Anyone got any ideas ?

 

Thanks

[ZMANALEX]

Get it on a diagnostic machine from some one who knows there way around a 350Z and remove the guesswork.

 

Preowned ECUs are in stock if required.

 

Alex.

[Lipsylee]

Yes but I have a bigger problem the head gaskets have gone too so I have another engine but my mechanic won't fit the engine until the electrical problem is sorted , as it will do the same with new engine in .

 

The radiator was blown when I bought it and didn't realise so I put a new one in and feared the worst and within 10 minutes it over heated

The geezer done me up big time but hay ho just got to carry on I suppose .

Cheers I will let you know if I need an Ecu

[ZMANALEX]

Right I have replaced the throttle pedal and sensor ect .

Done throttle reset and throttle open close procedure .

 

Now I have a the lights on still but I'm actually getting a little response from the accelerater pedal , it's actually responding going up to 1500 rpm when foot is to the floor so my mechanic plugged his snap on diagnostics in and the two fault codes have gone and now I have two different fault codes that wasn't there previously .

The codes are :

 

P1122- ETC PERFORMANCE PROBLEM

P1126- ETC MOTOR OPEN CIRCUIT/THERMOSTAT FUNCTION .

 

The throttle body is not opening when I put my foot down could this be the problem do you think ?

Thanks lee.

 

Are you sure that you are not in limp mode ?

[Lipsylee]

I think it is in limp mode but my mechanic cleared the codes on his snap on .

 

Is there another way to get it out of limp mode ?

Cheers Lee

[ZMANALEX]

Have you tried the resets ?

[Lipsylee]

Actually looking at it I done

 

Throttle Valve Closed Position Learning

 

Idle Air Volume Learning (Throttle Position Learning)

 

Accelerator Pedal Release Position Learning

 

But not the ecu reset ! But I disconnected the negative battery terminal and thought that would do it

 

Do I need to also do the Ecu reset ?

 

Cheers

 

 

 

 

 

 

[ZMANALEX]

Yes, I would carry out the ECU reset.

[Mark@Abbey m/s]

Turn the ignition on, DO NOT START THE CAR, put the car into gear, press the throttle the butterfly should open fully.

 

If it doesn't there is a problem;

 

I would say from our experience is the connector from the engine loom to the throttle body have a issue with a bad connection;

 

If you remove the plug to the TB , gentle twist the MALE connectors so when you push the plug back on it make a better connection;

 

removing the battery earth will reset the ECU.

Edited September 21, 2015 by Mark@Abbey m/s

[Lipsylee]

Nice 1 mark , I will try that .

But I have twisted the harness before and it didn't do anything but I will look deeper into that as that's were my problem will most likely be .

 

These seems a bad buy at the money considering the engine change that it needs too ,

I don't Kmow how much that's going to cost to install haha.

[Lipsylee]

ALEX IF I NEED A ECU , you will be my first call haha

[Lipsylee]

FOUND THE FAULT !

It IS THE IPDR FUSE BOX !!

[Lipsylee]

Problem is still there even with the new board in .

It's doing my head in !!!!!

 

Any other ideas ?

[G35_slides]

Were you ever able to find the solution to this problem? I'm experiencing the same issues.

[zlowz33]

you ever find the solution my car is stuck in limp mode and wont rev past 1500rpm and throws the codes p1122 and p1126