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I have a gem-tech thermostat and I need to change the batteries. I can not get the frame off in order to get to the batteries. HELP!!!

Gemtech thermostat

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I think this might be helpfull.
Self help tips Changing Thermostat Batteries

Posted on Nov 20, 2014

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1999 Ford F150 Electrical Problem


at this point , removing a battery will activate the immobilizer system
try using a scan tool to reset the ECM to see it that puts the program back correctly
if it does then all the other problems should be fixed as well

Jul 04, 2016 | Ford Cars & Trucks

1 Answer

Limited. What is causing battery drain?


To find out what is draining the battery do a parasitic draw test . How To Perform Parasitic Draw Test EricTheCarGuy Test to be sure , before replacing GEM module .I would also have the GEM checked for DTC'S - diagnostic trouble codes . I would also check the battery saver relay .
SECTION 417-02: Interior Lighting 2000 Explorer/Mountaineer Workshop Manual DESCRIPTION AND OPERATION Procedure revision date: 06/17/1999 Interior Lighting The interior lighting system consists of the following:
  • dome/map lamp
  • rear dome/cargo lamp
  • overhead console/map lamp
  • RH/LH vanity mirror
  • ash receptacle lamp
  • puddle lamps
  • interior lamp switches
  • interior lamp relay
  • dimmer module
  • battery saver relay
  • generic electronic module (GEM)
Generic Electronic Module (GEM)/Central Timer Module (CTM) Controlled Functions
The generic electronic module (GEM) is equipped on four-wheel drive vehicles with power windows. The central timer module (CTM) is equipped only on two-wheel drive vehicles without power windows.
NOTE: GEM/CTM diagnostics are compatible with the scan tool.
The GEM/CTM incorporates the functions of several different modules into one, and offers diagnostics to easily locate and repair concerns affecting the subsystems that it controls.
The GEM/CTM constantly monitors the systems it controls and reports a concern in the form of a diagnostic trouble code (DTC). A DTC can be retrieved with the scan tool through the communication link.
The scan tool is a menu-driven tester that allows the user to run specific tests. The scan tool can isolate faults in the GEM/CTM subsystems through a symptom-driven diagnostic procedure. Connecting the scan tool to the GEM/CTM communication link will not alert the GEM/CTM. If the GEM/CTM is "asleep" when the diagnostic connector is plugged in, the GEM/CTM must be "awakened". If the communication link cannot be established, turn the ignition to RUN.
NOTE: The GEM/CTM has a sleep function to minimize battery consumption. During the sleep mode, the GEM/CTM turns off all outputs and monitors only the following:
  • door ajar (driver door, passenger door, liftgate, LH rear and RH rear doors).
  • key-in-ignition.
  • key in RUN or ACC.
  • two-step unlock switch (unarm switch).
  • digital TR sensor.
  • illuminated entry request (remote anti-theft personality [RAP] module).
If a change of status occurs at one of these inputs while the GEM/CTM is "asleep", the GEM/CTM will "wake up." When the GEM/CTM awakens, it carries out an internal self-test, and begins normal operation. At this point, the GEM/CTM will have all of its functions operational.
The GEM/CTM will go into the sleep mode immediately after both of the following conditions have been met:
  • key in OFF or key not in ignition.
  • after 45 minutes with no change in any wake-up input.
The GEM/CTM control system has two modes of operation; the normal operating mode and the tester-dependent diagnostics mode.
Normal operation of the GEM/CTM can detect errors. An integral part of normal GEM/CTM operation is continuous diagnostic capability. Continuous diagnostics detects errors and changes the GEM/CTM control strategy. There is no warning lamp for the GEM/CTM; therefore, a DTC concern will direct you to the GEM/CTM. Examples of faults that may be detected during normal operation include:
NOTE: The GEM/CTM can only detect open circuit/short to GRD faults when the GEM/CTM is not energizing a load, and short to battery faults when the GEM/CTM is attempting to energize a load.
  • GEM/CTM continuous self-test (RAM, ROM, EEPROM, A/D checking).
  • output driver monitoring (open circuit/short to ground [GRD], short to power).
  • illogical combinations of input signals.

Dec 01, 2015 | 2002 Ford Explorer

2 Answers

My battery drains over night. i can hear a relay under the dash clicking. i remove no. 27 fuse and it stops. what is causing this?


Check your owners manual for the number 27 fuse to see what it is. Checking online I see it as a 15 Amp, Under hoop lamp, Map lights, Glove box lamp, Dome lamp, Visor lamps, Accessory delay, Dimmer switch illum. and 4x4 system. check each one to see if the bulb is blown but left on, at least if it's a light. It that doesn't do it, research how to check accessory delay and 4x4 system.

Mar 20, 2015 | 1996 Ford Explorer

1 Answer

I have a Napco Gem-P800 Security System and the horn or horns have quit working. The manual says the horn output is 12vdc, checked voltage in alarm mode,but no 12vdc. The schematic shows a 2.2k resister...


First thing its not the resistor. The resistor is there only to make sure the siren wires are ok and not tampered with. Second found this in an install manual.

Bell Test

Enter this command to turn on the Bell, keypad

sounder and keypad LEDs for 2 seconds. The

battery is tested during a Bell Test, and automatically

every *24 hours to ensure proper battery

operation under load. The Alarm output

requires a battery in order to supply the specified

output. If the battery cannot sustain the load, a

low battery indication will be displayed. A battery

test is also performed on power-up after a 3
minute delay.

if the battery fails test replace it and try again.

Assuming no programming changes were made to the zone types that would diable the bell output. if this does not help, time for an upgrade. : ( GL

http://www.napcosecurity.com/images/panels/GEM-P800_WI850a_INST.pdf

Jul 27, 2011 | Gemini Sound Products Gemini Napco...

1 Answer

My moms 1998 Ford Taurus's battery dies with the cables normally connected. If you take one of the cables off the battery, it works fine. You just need to reconnect before you start the engine. We were...


It sounds like something is drawing power with the key off. It could be the GEM module but I doubt it. There is a draw somewhere. Connect battery and pull fuses one at a time to see if curent drain stops. You will need an ampmeter in series with the battery and the postive cable. Expensive. Get one from pick n pull salvage yard real cheap.


  • Check the following fuse junction panel fuses: fuse 23 (5A), fuse 20 (5A), and fuse 8 (5A).



  • Section 13-09A: Gauges/Warning Devices, Chime/Buzzer System 1998 Taurus/Sable Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 03/16/1998
    Generic Electronic Module (GEM) Removal
    The generic electronic module (GEM) is connected to the rear of the fuse junction panel (14A067) .
    1. Disconnect battery ground cable (14301) . Refer to Section 14-01.
    1. Remove two nuts retaining fuse junction panel to dash panel (01610) .
    1. Pull upper ears of fuse junction panel down out of retaining bracket.
    1. Disengage locking tangs and disconnect three harness connectors from bottom of GEM.
    1. Turn fuse junction panel over and remove screw retaining GEM to fuse junction panel .
    1. Disconnect and remove GEM from fuse junction panel .
    Installation
    1. Follow removal procedure in reverse order.
    1. Tighten GEM to fuse junction panel screw to 1-2 Nm (9-17 lb-in).
    1. Tighten fuse junction panel retaining nuts to 4-6 Nm (36-53 lb-in).


      k23950a.gif


      Item Part Number Description 1 14B205 Generic Electronic Module (GEM) 2 - Mounting Ear (Part of 14A067) 3 14A067 Fuse Junction Panel 4 - Screw (Part of 14A067) 5 - Generic Electronic Module (GEM) to Fuse Junction Panel Connector A - Tighten to 1-2 Nm (9-17 Lb-In)

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    Dec 17, 2010 | Ford Taurus Cars & Trucks

    2 Answers

    None of my power windows on 1998 Mercury Mountaineer work, checked fuses but can't find power relay if there is one. Any suggestions


    If you checked the fuses and they are fine, try this. With the key on and the window button down or up, open and close the door holding in the up or down position. If the window moves, there is a wire(s) are broken in the wire harness that goes from the door jam to the door. This is a common problem that we find with window and door operating problems. You may find 1 bad or broken wire, or 4-5 broken wires. Let us know if this help you find a repair, for this concern. Craig

    Jan 23, 2010 | 1998 Mercury Mountaineer

    1 Answer

    Power windows, power moon roof and all internal light are not working


    I think you have a bad GEM Generic Electronic Module. get from car-part.com page with asterisk is lowest price



    The GEM constantly monitors the system and reports concerns in the form of diagnostic trouble codes (DTCs). The DTCs can be retrieved with the Rotunda New Generation Star (NGS) Tester 007-00500 or equivalent through the communication link. The NGS is a menu-driven tester, allowing the user to run specific diagnostic tests. The NGS can isolate faults in the GEM subsystems through a symptom-driven diagnostic procedure. Connecting the tester to the GEM communication link will NOT alert the GEM. If the GEM is "asleep" when the diagnostic connector is plugged in, the GEM must be "awakened." If the communication link cannot be established, it is advised to turn the ignition to RUN. NOTE: The GEM has a sleep function to minimize battery consumption. During the sleep mode, the GEM turns off all outputs and monitors only the following:
    • Door ajar (driver's door, passenger's door, liftgate, rear right and rear left doors)
    • Key in ignition
    • Key in RUN or ACCY
    • Door handles (driver's or passenger's)
    • Two-step unlock switch
    • Neutral safety switch
    • Illuminated entry request — RAP module
    If a change of status occurs at one of these inputs while the GEM is asleep, the GEM will "wake up." When the GEM awakens, it performs an internal self test, and begins normal operation. At this point, the GEM will have all of its functions operational. The GEM will go into the sleep mode immediately after both of the following conditions have been met:
    • Key in OFF or key not in ignition
    • After 45 minutes with no change on any wake-up input
    The GEM control system has two modes of operation, the normal operating mode and tester dependent diagnostics mode. The normal operation of the GEM can detect errors. An integral part of the normal GEM operation is the continuous diagnostics capability. Continuous diagnostics detects errors and changes the GEM control strategy. There is no warning light for the GEM; therefore, a DTC concern will direct you to the GEM. Examples of faults that may be detected during normal operation include:
    • GEM continuous self test (RAM, ROM, EEPROM, A/D checking)
    • Output driver monitoring (open circuit/short to GND, short to battery) NOTE: The GEM can only detect open circuit/short to GND faults when the GEM is not energizing a load, and short to battery faults when the GEM is attempting to energize a load.
    • Illogical combinations of input signals
    A description of the subsystems controlled by the GEM follows.

    Courtesy Lamps
    The GEM illuminates the interior courtesy lamps when any door is set ajar or is opened. The following are inputs used for controlling the courtesy lamps:
    • All door ajar switches (including liftgate)
    • Door handle switches
    • Illuminated entry request with RAP module
    • Two-step unlock door disarm switches.
    All interior courtesy lamps are turned off when any of the following occurs:
    • 25 seconds have elapsed after all the doors are closed.
    • The ignition switch is turned to RUN.
    • Vehicle speed is over 8 km/h (5 mph).
    • A power door lock command is received before the five seconds have elapsed.
    One-Touch Window
    When the power switch for driver's window control is held down (between 0.04 and 0.4 second) and then released with the ignition switch in RUN or ACC, the driver's window will automatically move to its full down position. Only the driver's window has this feature. Holding the driver's switch down longer allows the operator to stop the window as soon as the switch is released. The one-touch window feature can be enabled or disabled by the operator.
    1. Close both front doors .
    1. Key ON.
    1. Key OFF.
    1. Remove key from ignition switch .
    1. Press and hold the down window switch to enable/disable the one-touch window feature.
    1. Reinsert the key into the ignition switch within two seconds after pressing the down window switch.
    1. Continue to hold the switch until a two-second tone is heard.
    1. Release the switch while the tone is active.
    1. After the two-second tone, the following confirmation beep sequences will be heard:
      • One beep — feature disabled.
      • Two beeps — feature enabled.
      Repeat the procedure again to toggle back and forth.
    Generic Electronic Control Module (GEM), Central Timer Module (CTM) Removal and Installation
    1. Disconnect battery ground cable (14301) .
    1. Remove radio, refer to Section 15-01 .
    1. Remove radio bezel.
    1. Remove retaining screw.
    1. Slide GEM/CTM toward front of vehicle, off retaining tabs.
    1. Disconnect electrical connectors.

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      NOTE: When the battery (10655) has been disconnected and reconnected, some abnormal drive symptoms may occur while the powertrain control module (PCM) (12A650) relearns its adaptive strategy. The vehicle may need to be driven 16 km (10 miles) or more to relearn the strategy.
      For installation, follow removal procedures in reverse order. Tighten retaining screw to 2.3-3.3 Nm (20.4-29.2 lb-in). NOTE: The automatic ride control switch must be turned to the OFF position when the vehicle is hoisted, jacked, towed, jump-started or raised off the ground to avoid unnecessary operation of the system and/or possible damage to its components.
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    May 23, 2009 | 1995 Ford Explorer

    1 Answer

    Interior lights


    What they are speaking of is the GEM module however this will not correct the concerns you have.
    The GEM controls the following functions:
    • warning chimes and warning lamps
    • one-touch down window
    • windshield washers and wipers
    • battery saver
    • illuminated entry with keyless remote entry
    • interior lighting
    Turn signals and hazzard lamps do not go thru the GEM module at all and the reverse lamps all the gem does there is look for reverse so it knows when to activate the auto lock doors when vehicle is in motion.
    I suspect you have 2 or more problems here that you may want to get checked by an experienced Ford tech.Also the GEM has to be programed when replaced.It is not plug and play.

    Feb 02, 2009 | 2002 Ford Mustang

    2 Answers

    2000 MERCURY SABLE


    you need to have your GEM module reconfigured after battery disconnect. It controls many functions. It may have also been damaged during battery change due to a voltage spike. Dealer can test it. Call a dealer service dept and describe symptoms and see what they say.

    Module Controlled Functions NOTE: Prior to removal of the generic electronic module (GEM), it is necessary to upload module configuration information to the scan tool. This information needs to be downloaded into the new module once installed. For additional information, refer to Section 418-01 .
    NOTE: Electronic modules are sensitive to electrical charges. If exposed to these charges, damages may result.
    The generic electronic module (GEM) is the only multi-function module on this vehicle.
    The GEM constantly monitors its subsystems for concerns. If a concern is found in one of the subsystems, the GEM will record the concern in the form of a diagnostic trouble code (DTC).
    The ignition switch position is very important to the GEM functionality Erratic or unexpected GEM functions can often be traced to problems with these GEM inputs.
    The GEM controls a variety of systems:
    • instrument cluster warning indication and chimes
    • interior courtesy lamp control
    • automatic headlamp control
    • daytime running lamps (DRL)
    • wiper and washer (front only)
    • heated rear window
    • one-touch down power window
    • delayed accessory
    • power door locks (including SMART, autolocking and luggage compartment lid release)
    • remote keyless entry
    • perimeter anti-theft
    -------------------------------------------
    Principles of Operation
    The generic electronic module (GEM) constantly monitors its subsystems for concerns. If a concern is found in one of the subsystems, the GEM will record the concern in the form of a diagnostic trouble code (DTC).
    The ignition switch position is very important to the GEM functionality. Erratic or unexpected GEM functions can often be traced to problems with these GEM inputs.
    ----------------------------------------------------------------------------

    Aug 20, 2008 | 2000 Mercury Sable

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