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Unlock problem with OHS1

Have a OHS1 surgical microscope that will not unlock for movement when you activate the switches on the hand control. I can here what sounds like a relay in the base unit, but none of the head joints will unlock.

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Found bad 12.5A fuse in base. Replaced fuse and problem was solved.

Posted on Sep 09, 2008

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Posted on Jan 02, 2017

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Where are the fuses for the power dock locks on a 2006 montecarlo06ss


DR/LCK fuse 25 amp . located in the I/P block
Fuse Block - I/P
In the right front kick panel

Power Door Locks System Components
The power lock system consists of the following components:
• Body control module (BCM)
• Driver door lock cylinder switch
• Front passenger door lock cylinder switch
• Driver door lock switch
• Front passenger door lock switch
• Door lock actuators in each of the doors
• DR LK Fuse 20-amp
Door Lock System Controls
The Power Door Lock System is controlled by the body control module (BCM) and can be activated by any one of the following:
• A door lock switch lock or unlock actuation
• A door lock cylinder switch unlock actuation
• A keyless entry transmitter actuation
• An automatic door lock actuation (Personalization function)
• An automatic door unlock actuation (Personalization function)
Door Lock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the lock position, it switches the door lock actuator lock control circuit to voltage. Since the lock actuator unlock control circuits are at ground potential within the BCM, the door lock actuator motors transition to the lock position.
Driver Door Unlock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the unlock position, it switches the driver door lock actuator unlock control circuit to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the left front (LF) door lock actuator motor transitions to the Unlock position.
The driver door lock actuator unlock control circuit is a dedicated control circuit used only for the driver door lock actuator motor. This is done so that the driver door may be unlocked by itself using a keyless entry transmitter or an automatic door unlock function (if programmed).
Passenger Door Unlock Operation
When the body control module (BCM) detects a transition of either of the door lock switches to the unlock position, it switches the door lock actuator unlock control circuits to voltage. Since the door lock actuator lock control circuit is at ground potential within the BCM, the passenger door lock actuator motors transition to the unlock position.
The door lock actuator unlock control circuits are dedicated control circuits used only for the passenger door lock actuator motors. This is done so that the driver door may be unlocked separate from the passenger doors using a keyless entry transmitter or an automatic door unlock function (if programmed).

Mar 23, 2017 | 2006 Chevrolet Monte Carlo

2 Answers

2005 Chevy Equinox Driver & Passenger Door Unlock Relay. How To Remove & Install. They Are Power Locks. Front Doors Must Roll Windows Down Use Hand To Open Thanks. Ms. J. C.


Door Lock and Unlock Operation
When a door lock switch is activated in the lock or unlock position the BCM will receive a voltage signal on either the door lock switch lock or unlock signal circuits.
The BCM, upon receipt of a lock switch lock or unlock signal, will switch the appropriate lock relay control circuit(s) to battery positive voltage. This will energize the appropriate lock or unlock relay(s). The relay will supply voltage to the door lock actuator lock or unlock control circuits to one side of the lock actuator. Since the opposing side of the lock actuators are connected to ground through the other lock actuator control circuit and the normally closed contacts of the lock or unlock relay, the doors and liftgate will then lock or unlock appropriately.
Three relays are used to operate the lock. Driver door unlock, passenger door unlock and all door lock. This is done to isolate the driver door lock actuator so it can be unlocked by itself using the keyless entry transmitter.
Your door locks are controlled by the BCM - body control module (a computer ) . An a scan tool is a must to diagnose system operation . Your best bet would be to take your vehicle to a qualified repair shop . The only way you could try to fix this is by changing parts ! Suppose you find an replace a door lock/ unlock relay an that doesn't fix it ? There could be DTC'S stored in the BCM . Do you know what a DTC is ?
?€¢
DTC B3132 All Door Unlock Circuit Low


?€¢
DTC B3133 All Door Unlock Circuit High




Your

Aug 10, 2016 | Cars & Trucks

1 Answer

Why does my 2004 Chevy Silverado lock and unlock while in drive? When turned off and no keys in ignition the drivers door will unlock on its own a short time later.


Gremlins ! HA HA HA sorry ! First off a little bit on how they work an what all is involved in making them work ! There are a few control modules in the mix , switches ,relays etc...
Door Lock System Components
The power door lock system consists of the following components:
?€¢
The driver door module (DDM)

?€¢
The passenger door module (PDM)

?€¢
The body control module (BCM)

?€¢
The driver information center (DIC)

?€¢
The rear door lock switch

?€¢
The door lock relay

?€¢
The door unlock relay

?€¢
The liftgate lock relay--utility vehicles with liftgate only

?€¢
The reversible door lock actuators in each of the doors and liftgate

?€¢
LOCKS 20A fuse (rear lock/unlock relay supply voltage)

?€¢
ECC 10A fuse (liftgate lock relay supply voltage)

Door Lock System Controls
The power door lock system can be controlled by any of the following:
?€¢
A power door lock or unlock switch activation

?€¢
A keyless entry transmission

?€¢
An automatic door lock function

?€¢
A delay lock function

?€¢
Door lock cylinder switch activation

?€¢
Lockout Prevention

?€¢
An airbag deployment

The front power door lock switches are integral components of the driver door module (DDM) and passenger door module (PDM). The switches are two position normally open rocker switches. When placed in either the lock or unlock positions, the switches provide a direct input to the DDM or PDM. The DDM or PDM monitors these inputs and sends a Class 2 message indicating a change in the switch's respective position. Modules which activate the power door lock motors receive the Class 2 message and activate the motor in the appropriate direction to lock or unlock the vehicle's doors and liftgate. The rear door lock switch provides a lock and unlock signal to the body control module (BCM). The BCM upon receipt of a lock or unlock signal will control the rear door lock relays and also send a Class 2 message to the DDM and PDM to perform the appropriate function.
The modules which activate the power lock motors are:
?€¢
The DDM (driver door lock actuator).

?€¢
The PDM (passenger front door lock actuator).

?€¢
The BCM (both rear door lock actuators and cargo door/liftgate).
The DDM and PDM are directly connected to the respective door lock actuator through the door lock motor lock and unlock circuits. Once a door lock or unlock request has been received, the module will supply battery voltage to one side of the actuator and ground the other causing the doors to lock or unlock.
The rear passenger and cargo doors differ slightly in that they use lock and unlock relays. The relays supply and coil sides receive a constant voltage through the battery voltage supply circuit. The normally closed contacts are connected to ground and the control side is connected to the BCM. Once a door lock or unlock request has been received by the BCM, the BCM will ground the control side of the appropriate relay. This energizes the relay and allows voltage to be applied to either the door lock motor lock or unlock circuits. since the other side of the door lock actuator is connected to the normally closed contacts of the opposing relay to ground, the doors lock or unlock.
The first place to start is have a factory or equivalent scan tool hooked up , one that can read BCM DTC'S - diagnostic trouble codes ! This could lead to a fix faster ! Watch these three videos !
Door Locks Go Crazy 1

Sep 16, 2015 | Cars & Trucks

2 Answers

No electric power to left door Fuse and relay are good


Check the wire lume that runs from the body to the door inside a rubber bellow. the wires can break from constant moving and I'm not sure what vehicle you have, but this is a defect for a few vehicles out there the wire can be to short in some cases from cost saving manufacturing. It may be necessary to remove the door panel and remove the harness through the wire opening to be able to move the boot far enough to access the broken wire or even just to check it in some cases.
How I like to repair it, is to put a new wire through the entire pivot point and join it inside the door and body where the wire does not move constantly.

Hope this helps

Mar 04, 2015 | 2007 Saturn ION-2 Quad Coupe

2 Answers

Why won't the passenger door unlock?


Door Lock System Controls
The Power Door Lock System is controlled by the body control module (BCM) and can be activated by any one of the following:
?€¢
A door lock switch lock or unlock actuation

?€¢
A keyless entry transmitter actuation

?€¢
An automatic door lock or unlock actuation

?€¢
A last door closed locking (LDCL) actuation
If the driver door cylinder switch feature of the vehicle is functional, the locks may also be operated by a driver door cylinder switch lock or unlock activation.
Power Door Lock Switch Operation
Each door lock switch is wired to the body control module (BCM) through a separate door lock/unlock signal circuit. While these circuits are separated between the BCM and respective door lock switch, they are connected into a single circuit within the BCM. The BCM supplies voltage through the door lock/unlock signal circuits to each door lock switch. When either door lock switch is operated, this supply voltage is pulled to ground, providing the BCM with the required lock or unlock signal. In order for the BCM to distinguish between a lock and unlock signal, the lock switch contains two separate paths for this voltage to flow to the same body ground. When the switch is operated to the unlock position, the supply voltage flows to ground through a 1.5 K?© resistor. When the switch is operated to the lock position, the supply voltage flows to ground through a different part of the switch circuit, which has no resistor. The BCM then interprets the flow of voltage as a lock or unlock request and powers the door lock actuators to the appropriate lock or unlock position.
I'll post a youtube video on how to test the power door locks computer controlled , check it out ! Your problem could be a switch or the lock actuator , BCM , wiring etc.... you need to test it to see !
I'll
How to test computer controlled door locks

Mar 22, 2014 | 2008 Saturn Aura

2 Answers

How do i get free unlock code for g1 google phone


Dear,
  • 1. Side out the Keyboard / Open Left Hand side Notch to unlock Battery Panel.
    01.jpg
  • 2. Insert TMobile SIM Card and Battery.
    02.jpg
  • 3. Press MENU Button Constantly and Switch the Phone using Red Talk End / Power Button but do not Release the Menu Key.
  • 4. This will put on the Phone in Safe Mode.
  • 5. Press to Emergency Dial Button, Windows dial *#06# and this will show IMEI Number: note it down and also Recheck IMEI with Box.
    03.jpg
  • 6. Give IMEI to Unlock Code Provider www.unlock-tmobileg1.com and get the Unlock Code.
  • 7. Now Return to main Screen and Press MENU Button this Will popup APN Button, Just Press it.
    04.jpg 05.jpg
  • 8. Go to APN Setting. There will be so many APN already Preset. Again Press MENU Button this will show NEW APN Popup Button again Press.
    06.jpg 07.jpg 08.jpg
  • 9. Remember to put Right MCC (Mobile Country Code), and MNC Mobile Network Code, G1 Matches SIM card Data of MCC / MNC with these Setting and then try to use that. Settings.
    All World MCC / MNC codes is available here:
    http://en.wikipedia.org/wiki/Mobile_network_code
  • 10. Now Switch off the Phone and Wait for Unlock codes.
  • 11. Insert the Non T-Mobile SIM Card which you intend to use it with G1 and switch G1 on. (Your SIM must have
    Data plan / GPRS Activated so G1 will able to contact google.com for Activation)
    09.jpg
  • 12. HTC G1 will ask for Unlock Codes. Type unlock code carefully, typing wrong code thrice may make Phone Hardware Locked.
  • 13. Once Unlocked your GPRS / EDGE / 3G Data Service will be active as per APN Setting we did before.
  • 14. Type Google User name / Password in Signing Window and this will Activate the Unlock G1 Device on your SIM Card.
  • 15. Make other remaining Data Setting like MMS / Home Page / Port to Active other Data Service
Thanks

Sep 14, 2010 | HTC Google G1/Dream Cell Phone Black...

1 Answer

Disconnecting the alarm, drivers door lock does not work, unable to turn key.


Disconnecting the Imobilizer will not unlock your Lock/Key assembly. You should be able to manually unlock your car with your key. The Imo will only activate when it's been breached illegally but it doesn't prevent you from opening the lock manually. Your lock assembly maybe malfunctioning and regardless what state it's in the IMO doesn't control it's mechanical movement.

Feb 28, 2010 | Volkswagen Golf Cars & Trucks

1 Answer

Remote control no longer opens the lock


Sounds like the button to unlock doors on the fob is worn out. You can purchase a new one or used from your local recycle yard.

Jun 01, 2009 | 2003 GMC Sierra 1500

2 Answers

Auto Lock Activation


Deactivating/activating autolock
There are 3 methods to enable/disable this feature. One through your
dealer, the second with a power door unlock/lock sequence and the third
with the keypad.
Before following the activation or deactivation procedures, make sure
that the anti-theft system is not armed, ignition is off, and all vehicle
doors, liftgate and liftgate window are closed.
Controls and features
Power door unlock/lock
procedure
You must complete steps 1-5 within
30 seconds or the procedure will
have to be repeated. If the
procedure needs to be repeated,
you must wait 30 seconds.
1. Turn the ignition key to ON.
2. Press the power door unlock control three times.
3. Turn the ignition key from ON to OFF.
4. Press the power door unlock control three times.
5. Turn the ignition back to ON. The horn will chirp.
6. Press the unlock control, then press the lock control. The horn will
chirp once if autolock was deactivated or twice (one short and one long
chirp) if autolock was activated.
7. Turn the ignition to OFF. The horn will chirp once to confirm the
procedure is complete.
Keyless entry key pad procedure
1. Enter 5 digit entry code
2. Press and hold 7/8 control
3. Press and release 3/4 control
4. Release 7/8 control.
The user should receive a horn
chirp
to indicate the system has
been disabled or a chirp followed by
a honk to indicate the system has
been enabled.
Smart unlock
This feature prevents the driver’s door from locking while the key is in
the ignition. This feature will unlock only the driver’s door if the key is in
the ignition cylinder, the driver’s door is ajar and all doors are locked
using the interior trim switch. If these conditions are met, the entire
vehicle will lock and the driver’s door will unlock within 1 second.
Controls and features
127

May 15, 2009 | 2002 Ford Explorer

1 Answer

Remote key fob will not work-battery replaced


VW/AUDI/SEAT/SKODA



Remote Control Programming (1997 ON)

Procedure
1. Switch Ignition ON and leave the key in the ignition.

2. Mechanically lock the vehicle using the Drivers door using a second
key.

3. Using the remote control press the Unlock button once, and the horn
will sound once.

4. Wait 6 seconds and press the unlock button once to activate the coding
procedure. The remote control will now be programmed.

NOTE : When performing programming on additional remotes the procedure
is the same, except you press the unlock button 2, 3 or 4 times for the
different remote.

For example : If programming 2 remotes press the unlock button twice with
a 1 second interval between each press, repeat for 3 and 4 remotes.

5. Switch Ignition OFF.

6. Remove key from ignition and check for operation.

7. The coding procedure can be repeated up to 4 times for additional remotes.

8. The ignition must be switched OFF between programming each remote
control.

Remote Control Erasing (1997 ON)

Procedure
1. Switch Ignition ON and leave the key in the ignition.

2. Mechanically lock the vehicle using the Drivers door using a second
key.

3. Press the remote control unlock button 5 times in 1 second intervals.
A short horn will sound.

4. Wait 6 seconds and press the unlock button once to activate memory
erase.

5. Switch ignition OFF, all remotes are now erased.

Dec 24, 2008 | 2004 Volkswagen New Beetle Convertible

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