Steering lock problem solved (for real)

bdl99 · 05-27-2012, 09:56 PM

Quote:

Originally Posted by Baer383

No codes,no problems,the car has been running,driving,parked,locked,unlocked and everything we could think off no CEL it just acts like a normal 370 but with no steering lock.And that location marked with the blue arrow @ the cpu is for the steering lock so it doesn't come in to play.

But you agree that the blue arrow is an input to the CPU and it won't be hot without the fuse? It wouldn't be an indication of the steering lock status because it would always be hot as long as the relay was activated which the CPU already knows because it triggers the relay via the earth/ground feed above the blue arrow and the status of the lock is communicated by the other wires going from the steering lock to the CPU. As I said it is great that there appears to be no down sides, but it is also unusual for a circuit to include a feed like that if it isn't used. It could simply be for the CPU to know that the activation of the relay was successful, but without seeing the inside of the CPU or having access to the code there would be no way of knowing for sure.

Baer383 · 05-27-2012, 10:16 PM

Quote:

Originally Posted by bdl99

But you agree that the blue arrow is an input to the CPU and it won't be hot without the fuse? It wouldn't be an indication of the steering lock status because it would always be hot as long as the relay was activated which the CPU already knows because it triggers the relay via the earth/ground feed above the blue arrow and the status of the lock is communicated by the other wires going from the steering lock to the CPU. As I said it is great that there appears to be no down sides, but it is also unusual for a circuit to include a feed like that if it isn't used. It could simply be for the CPU to know that the activation of the relay was successful, but without seeing the inside of the CPU or having access to the code there would be no way of knowing for sure.

Actually I don't see the blue arrow as a input from the S/L ,but as a CPU output to the S/L thats why when the fuse is removed the power is taken from that wire(fuse 48) and then no input is given to the S/L via that wire.And again there have been no issue and no codes.

bdl99 · 05-27-2012, 10:51 PM

Quote:

Originally Posted by Baer383

Actually I don't see the blue arrow as a input from the S/L ,but as a CPU output to the S/L thats why when the fuse is removed the power is taken from that wire(fuse 48) and then no input is given to the S/L via that wire.And again there have been no issue and no codes.

I don't see it as either. It is an input from the relay to the CPU. The relay is activated by the wire above the blue arrow, completing the circuit and energizing the coil in the relay. 12V then flows from the fuse through the relay and in to the CPU and the S/L. 12V is fed to both the CPU and the S/L.

SurfDog · 05-27-2012, 10:02 PM

I just bought my 09 370Z (assuming I have a failure prone lock)
Thanks a TON I was sweating this impending failure!!!

Trips · 05-27-2012, 10:43 PM

Please remember this is the Tech Section and not the General Section so STAY ON TOPIC!

Back On Topic!

Like it has been said Good find

Baer383 · 05-27-2012, 10:52 PM

Quote:

Originally Posted by Triple's

Please remember this is the Tech Section and not the General Section so STAY ON TOPIC!

Back On Topic!

Like it has been said Good find

Thanks Trip,that has been my intent from the beginning.

TripleBlkZ · 01-05-2013, 05:46 PM

Going though the 30 some pages I am sure I missed this but just to confirm if you look under your steering wheel and have Rev A, Rev B, Rev C you should pull the fuse? anything else you should be fine (Rev D, Rev E)?

Baer383 · 01-05-2013, 05:55 PM

Quote:

Originally Posted by TripleBlkZ

Going though the 30 some pages I am sure I missed this but just to confirm if you look under your steering wheel and have Rev A, Rev B, Rev C, or Rev D you should pull the fuse? anything else you should be fine?

If your SL is working properly turn the key on and pull the fuse and that's it,
and yes pull the fuse regardless of what rev you have.

alexanderb · 05-27-2012, 11:47 PM

Sorry for the stupid question but should i pull the fuse while the car is at the "on" position? As soon as you turn it off the lock engages so that would mean the car would need to be on for the lock to be disengaged before pulling the fuse?

Thanks!

daisuke149 · 05-28-2012, 01:04 AM

Quote:

Originally Posted by alexanderb

Sorry for the stupid question but should i pull the fuse while the car is at the "on" position? As soon as you turn it off the lock engages so that would mean the car would need to be on for the lock to be disengaged before pulling the fuse?

Thanks!

correct.

JAYNO20 · 05-28-2012, 01:07 AM

Just did this, its seriously like 7 clips and you have access to the fuse box...

Baer383 · 05-28-2012, 08:15 AM

Quote:

Originally Posted by JAYNO20

Just did this, its seriously like 7 clips and you have access to the fuse box...

Thank you for being the first to do this other than us to confirm that it works.

petetlr · 05-28-2012, 07:15 AM

My Z is a 2010 how would I be able to tell if I need to do this? I keep reading the threads regarding this issue and all of then said early 2010's what is the difference between the 2010 model?

SPOHN · 05-28-2012, 08:03 AM

Quote:

Originally Posted by petetlr

My Z is a 2010 how would I be able to tell if I need to do this? I keep reading the threads regarding this issue and all of then said early 2010's what is the difference between the 2010 model?

I would do it reguardless of what model

daisuke149 · 05-28-2012, 09:15 AM

Quote:

Originally Posted by SPOHN

I would do it reguardless of what model

Chris you need to do it. leave the fuse at home too. weight savings for track bro. and since its in the front, its gonna help the balance!

P.S get that battery.

05-27-2012, 10:43 PM	#5 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,736 Drives: 🔰 Rep Power: 10	Please remember this is the Tech Section and not the General Section so STAY ON TOPIC! Back On Topic! Like it has been said Good find __________________

01-05-2013, 05:46 PM	#7 (permalink)
TripleBlkZ Enthusiast Member Join Date: May 2010 Location: Kelowna, BC Posts: 333 Drives: 2014 QX50 Rep Power: 17	Going though the 30 some pages I am sure I missed this but just to confirm if you look under your steering wheel and have Rev A, Rev B, Rev C you should pull the fuse? anything else you should be fine (Rev D, Rev E)? Last edited by TripleBlkZ; 01-05-2013 at 05:53 PM.

05-28-2012, 01:07 AM	#11 (permalink)
JAYNO20 Track Member Join Date: Mar 2012 Location: Pittsburgh, PA Posts: 802 Drives: 2010 370Z Nismo Rep Power: 16	Just did this, its seriously like 7 clips and you have access to the fuse box... __________________ 2010 Solid Red NISMO #0334 - SOLD 2014 Red Hot Camaro ZL1

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petetlr Base Member Join Date: May 2012 Location: Houston Posts: 74 Drives: '10 nissan 370Z c Rep Power: 15	My Z is a 2010 how would I be able to tell if I need to do this? I keep reading the threads regarding this issue and all of then said early 2010's what is the difference between the 2010 model?