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

kenchan · 04-09-2012, 02:56 PM

Quote:

Originally Posted by zero

Most micro switches are internally mechanical with contact point. The contact point can get sticky from contaminant. The switch nipples are riding on the flat profile surface of the spur gear. I saw someone posting photo by-passing those switches and get the car to start so I think you can permanently short out those switches if you know the switch circuitry.

cool. that was the part i wanted to see in more detail.

so you think the oil contaminated the microswitches on the initial GTR recall? could be, huh?

Quote:

Originally Posted by zero

This part does not look like 500+ dollars part. The motor got powered, then turn and drive the spur gear, spur gear turned the lock column shaft up or down. The 2 micro switches detected spur gear position and then send signal to BCM.

yah, it's probably no more than $35 to make this thing even if it was assembled in the US. service parts have huge margins for the distributor and retailer (dealers).

ChrisSlicks · 04-09-2012, 03:01 PM

Quote:

Originally Posted by kenchan

cool. that was the part i wanted to see in more detail.

so you think the oil contaminated the microswitches on the initial GTR recall? could be, huh?

Should be able to solder bridge the appropriate switch on the backside of the circuit board creating a permanent setting of "unlocked".

kenchan · 04-09-2012, 03:02 PM

Quote:

Originally Posted by ChrisSlicks

Should be able to solder bridge the appropriate switch on the backside of the circuit board creating a permanent setting of "unlocked".

i wonder if the "locked" condition is needed for correct shut-down? we dont want the intelligent key icon to show up in the cluster.

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.

KaienZ34 · 04-09-2012, 12:43 PM

I hope someone with the know how can jump on this project and let us know. Many many reps will be given...

kenchan · 04-09-2012, 01:41 PM

Quote:

Originally Posted by KaienZ34

I hope someone with the know how can jump on this project and let us know. Many many reps will be given...

dont try to undermine me kaizen.

zero · 04-09-2012, 02:06 PM

Looking the assembly, I believe the 2 blue micro switches, next to the motor, sending the signal to the BCM. The 2 switches are used to detect the position of the white gear.

kenchan · 04-09-2012, 02:21 PM

Quote:

Originally Posted by zero

Looking the assembly, I believe the 2 blue micro switches, next to the motor, sending the signal to the BCM. The 2 switches are used to detect the position of the white gear.

yah, i think so too.

now are the micro switches mechanically activated by the spur gear? i think so, but i can't see where it would connect in the picts we have.

my RevB still works fine so dont feel like opening it up yet.

zero · 04-09-2012, 02:35 PM

Quote:

Originally Posted by kenchan

yah, i think so too.

now are the micro switches mechanically activated by the spur gear? i think so, but i can't see where it would connect in the picts we have.

my RevB still works fine so dont feel like opening it up yet.

Most micro switches are internally mechanical with contact point. The contact point can get sticky from contaminant. The switch nipples are riding on the flat profile surface of the spur gear. I saw someone posting photo by-passing those switches and get the car to start so I think you can permanently short out those switches if you know the switch circuitry.

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.

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.

04-09-2012, 12:43 PM	#5 (permalink)
KaienZ34 A True Z Fanatic Join Date: Oct 2009 Location: LA. not L.a. Posts: 21,652 Drives: Z34 Tour/Sport Rep Power: 179	I hope someone with the know how can jump on this project and let us know. Many many reps will be given... __________________ *"These Violent Delights Have Violent Ends"* http://www.the370z.com/members/kaienz34-albums-z34.html

04-09-2012, 02:06 PM	#7 (permalink)
zero A True Z Fanatic Join Date: Dec 2008 Location: Southern California Posts: 1,259 Drives: MK 7.5 Golf R Rep Power: 24	Looking the assembly, I believe the 2 blue micro switches, next to the motor, sending the signal to the BCM. The 2 switches are used to detect the position of the white gear. __________________

04-09-2012, 05:17 PM	#10 (permalink)
zero A True Z Fanatic Join Date: Dec 2008 Location: Southern California Posts: 1,259 Drives: MK 7.5 Golf R Rep Power: 24	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	#11 (permalink)
ChrisSlicks A True Z Fanatic Join Date: Mar 2009 Location: North East Posts: 6,203 Drives: 09 370Z Sport M6 Rep Power: 655	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

04-10-2012, 06:43 PM	#14 (permalink)
zero A True Z Fanatic Join Date: Dec 2008 Location: Southern California Posts: 1,259 Drives: MK 7.5 Golf R Rep Power: 24	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. __________________

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