DIY: Replace dreaded steering-lock on 2009s and early 2010s.

zero · 04-09-2012, 05:17 PM

Got information on the switch from this link, Steering Lock entry and immobiliser delete (no photos). The switch is SPDT commonly close, Download Data Sheet: Turquoise stroke switches Data Sheet for: Switch,pin plunger,SPDT,PCB,without boss. Part No ASQ11510J. Manufactured by Panasonic

ChrisSlicks · 04-09-2012, 06:16 PM

So much for being a sealed switch, not sealed very well if it allowing grease in.

Ok so the switch must be internally cut, removed or track trace cut since it is normally closed (in the released state).

zero · 04-09-2012, 06:19 PM

Quote:

Originally Posted by ChrisSlicks

So much for being a sealed switch, not sealed very well if it allowing grease in.

Ok so the switch must be internally cut, removed or track trace cut since it is normally closed (in the released state).

If the switch removed, it would be normally open, wouldn't it? Then removing the switches would be the same as keeping the switches pressed all the time.

ChrisSlicks · 04-09-2012, 06:26 PM

Quote:

Originally Posted by zero

If the switch removed, it would be normally open, wouldn't it? Then removing the switches would be the same as keeping the switches pressed all the time.

Yes switch removed would be open circuit, which is equivalent to pressing the switch.

kenchan · 04-09-2012, 06:45 PM

Quote:

Originally Posted by ChrisSlicks

Yes the ideal would be to trigger whichever condition it desires based on the pin input signal. The problem is that this would require additional circuitry and always on power (microscopic power drain) to store the current state using a transistor pair. Definitely can be done, and for a lot cheaper than the price of a new lock. If the logic state storage isn't required it will be even simpler, but I haven't had a chance to experiment yet. I guess I will have to buy someone's dead unit since I don't feel like taking apart my working one yet

As a quick fix I think setting it to the always unlocked state would work, but give you the key icon.

Sounds good. But I suppose this is something one must risk doing prior to failure...otherwise same issue with dealing with towing and dealer. Now how many users would risk taking the thing apart while it is still functional is yet another question to consider I suppose.

KORRUPT · 04-09-2012, 06:46 PM

Quote:

Originally Posted by kenchan

this is a question for AXW and KORRUPT...or anyone that actually took apart a broken steering lock. if we were to just remove the spur gear in the pict below, would this mean we would be removing the root cause of the failing steering lock problem?

we wont have steering lock feature as the motor and pinion will just spin inside, but i think it was the spur gear that was jamming that causes this problem in the first place. any thoughts?

where is the detection pads/pins that sends signal back to the BCM? is it part of the large gear or no?

The big white gear seen on the left...

Kenchan, you can remove the white plastic gear completely and the actual shaft that the gear moves up and down to lock the steering wheel, as well as the motor really. Obviously you wont be able to lock the steering wheel but who cares the car will start. As for the electronic pins I assume they have to be held down and connected for the car to start by completing the circuit.There is a metal plate inside the white plastic gear that presses the pins down and completes the circuit when it releases the steering lock. I am by no means a electronics wizz and if someone can come up with an easier way to do it than a piece of metal and electrical tape then I say sweeet and I will open mine up again and change it.

Hope this made sense.

zero · 04-09-2012, 06:48 PM

Quote:

Originally Posted by kenchan

Sounds good. But I suppose this is something one must risk doing prior to failure...otherwise same issue with dealing with towing and dealer. Now how many users would risk taking the thing apart while it is still functional is yet another question to consider I suppose.

I just looked at photos of the lock unit internal mechanism. It looks like the 2 switches activated by the column shaft. So the 2 switches will determine if you can start the car or not.

KORRUPT · 04-09-2012, 06:53 PM

Hope this helps.

kenchan · 04-09-2012, 07:17 PM

Quote:

Originally Posted by KORRUPT

Kenchan, you can remove the white plastic gear completely and the actual shaft that the gear moves up and down to lock the steering wheel, as well as the motor really. Obviously you wont be able to lock the steering wheel but who cares the car will start. As for the electronic pins I assume they have to be held down and connected for the car to start by completing the circuit.There is a metal plate inside the white plastic gear that presses the pins down and completes the circuit when it releases the steering lock. I am by no means a electronics wizz and if someone can come up with an easier way to do it than a piece of metal and electrical tape then I say sweeet and I will open mine up again and change it.

Hope this made sense.

Quote:

Originally Posted by zero

I just looked at photos of the lock unit internal mechanism. It looks like the 2 switches activated by the column shaft. So the 2 switches will determine if you can start the car or not.

Quote:

Originally Posted by KORRUPT

Hope this helps.

Aha, this makes sense. Thanks!

so how many revolutions does the spur gear make to raise the lock latch and to lower latch/push micro switches?

or does it not make a full rotation? (My guess)

KORRUPT · 04-09-2012, 08:16 PM

Maybe one rotation. It isn't much.

zero · 04-10-2012, 06:43 PM

I bet it wouldn't be hard to come up with a simple jumper module to plug in place of the steer lock and make it like work liked the late 2012 model.

ChrisSlicks · 04-10-2012, 06:49 PM

Quote:

Originally Posted by zero

I bet it wouldn't be hard to come up with a simple jumper module to plug in place of the steer lock and make it like work liked the late 2012 model.

I wouldn't be surprised if they come up with an ECU "upgrade" that allows Consult to disable the steering lock and have it removed. This would be a good feature for UpRev to have as well.

KaienZ34 · 04-10-2012, 06:55 PM

I agree, someone call uprev and get them on it.

kenchan · 04-10-2012, 06:56 PM

chris- the 'brain' for the steering-lock is the BCM, no? can UpRev, which i believe flashes the ECU EPROM, be able to flash the BCM as well?

zero · 04-10-2012, 07:01 PM

Why Nissan used 2 switches to detect the column shaft? The switches got activated at the same time. Is it a redundant system?

04-09-2012, 05:17 PM	#421 (permalink)
zero A True Z Fanatic Join Date: Dec 2008 Location: Southern California Posts: 1,259 Drives: MK 7.5 Golf R Rep Power: 22	Got information on the switch from this link, Steering Lock entry and immobiliser delete (no photos). The switch is SPDT commonly close, Download Data Sheet: Turquoise stroke switches Data Sheet for: Switch,pin plunger,SPDT,PCB,without boss. Part No ASQ11510J. Manufactured by Panasonic __________________

04-09-2012, 06:16 PM	#422 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 653	So much for being a sealed switch, not sealed very well if it allowing grease in. Ok so the switch must be internally cut, removed or track trace cut since it is normally closed (in the released state). __________________ Hotchkis ARB \| Stillen CAI \| Art Pipes \| Berk CBE \| Stillen AP Racing Brakes \| AE Performance Oil Cooler \| BC Racing ER Coilovers \| Doran Control Arms

04-09-2012, 08:16 PM	#430 (permalink)
KORRUPT Base Member Join Date: Apr 2011 Location: Ottawa Posts: 75 Drives: 09 MB 370Z Rep Power: 14	Maybe one rotation. It isn't much. __________________ AFE / HPS / STILLEN CBE / AMS SS

04-10-2012, 06:43 PM	#431 (permalink)
zero A True Z Fanatic Join Date: Dec 2008 Location: Southern California Posts: 1,259 Drives: MK 7.5 Golf R Rep Power: 22	I bet it wouldn't be hard to come up with a simple jumper module to plug in place of the steer lock and make it like work liked the late 2012 model. __________________

04-10-2012, 06:55 PM	#433 (permalink)
KaienZ34 A True Z Fanatic Join Date: Oct 2009 Location: LA. not L.a. Posts: 21,652 Drives: Z34 Tour/Sport Rep Power: 178	I agree, someone call uprev and get them on it. __________________ *"These Violent Delights Have Violent Ends"* http://www.the370z.com/members/kaienz34-albums-z34.html

04-10-2012, 06:56 PM	#434 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	chris- the 'brain' for the steering-lock is the BCM, no? can UpRev, which i believe flashes the ECU EPROM, be able to flash the BCM as well?

04-10-2012, 07:01 PM	#435 (permalink)
zero A True Z Fanatic Join Date: Dec 2008 Location: Southern California Posts: 1,259 Drives: MK 7.5 Golf R Rep Power: 22	Why Nissan used 2 switches to detect the column shaft? The switches got activated at the same time. Is it a redundant system? __________________

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