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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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).
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
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
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
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
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.
7. Now Return to main Screen and Press MENU Button this Will popup APN Button, Just Press it.
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.
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)
12. HTC G1 will ask for Unlock Codes. Type unlock code carefully, typing wrong code thrice may make Phone
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
15. Make other remaining Data Setting like MMS / Home Page / Port to Active other Data Service
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.
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
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
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