I am looking for any information about Kirchhoff equations that are used in FEM program Strand7, can you help me please ??

As of my last knowledge update in January 2022, I don't have specific information about a Farex Fem 04 EJ cash register or its error codes, including error code 172. It's possible that this is a proprietary code related to the specific model, and such details might not be widely available in public knowledge repositories.

The FEM (Forward Electronic Module) is defective....See image #1...This necessitates a trip to the dealer in that replacement requires a Ford Diagnostic Tool...See Removal and Installation instructions below...You may find one on EBay...

Front Electronic Module(FEM)
Removal and Installation

CAUTION: Prior to removal of the FEM, it is necessary to upload module configuration information to a diagnostic tool. This information needs to be downloaded into the new module once installed..

Disconnect the battery ground cable..
Remove the instrument panel lower steering columnopening cover.
Remove the bolts. Thumbnail 1

Remove the instrument panel opening cover reinforcement.
Remove the bolts. Thumbnail 2

Remove the front electronic module(FEM).
Disconnect the five electrical connectors.
Remove the three bolts. Thumbnail 3

CAUTION: Once the new module is installed, it is necessary to download the module configuration information from the diagnostic toolinto the new module.
To install, reverse the removal procedure.

IMAGE 1:

Cost is high, Around $500

saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Tree is not a relay for the headlights. The headlights are ground side controlled by the FEM module. The FEM module receives lighting information from the instrument cluster which is the "gateway" for the lighting info. The headlight switch as well as the high/low and turn signal information is routed through the instrument cluster and is them delivered to the FEM module or the rear lighting control module.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

All the thing's your having problems with are controlled by the computer's an communication network . (FEM) - front electronic module , insturment cluster , (REM) - rear electronic module. etc... It's probably a loose ground connection somewhere . The headlamp switch is a electronic input to the insturment cluster , the insturment cluster is hooked to the SCP - serial data network . The insturment cluster electronic's (computer ) microprocessor sends a message to the (FEM) to turn on light's , the front electronic module will then suppy a ground to the headlamps circuit turnning on the headlamps. Samething for the wipers an turn signals an horn too .
010 Ford SCP Communications
From looking at a wiring diagram i would look at ground connection G-304 . Do you know what a body ground is ?
This ground is located How to troubleshoot headlights intermittently on and off with headlights...

1down vote Basically your headlamps are controlled by a computer. The Front Electronic Module (FEM) to be exact. The FEM grounds the headlamps when it wants to turn them on. This system was an early Multiplex design that reduced wire and total circuits where the modules communicate on a single serial line, now referred to as the CAN Bus (Controller Area Network). You will likely need a scan tool to diagnosis the car, and not a cheap one, but a professional model. You many even need a factory scan tool, though I doubt if for a Ford. Outside of security theft deterrent systems they allow the aftermarket professional scan tools to access their systems.
So where do you go from here? With or without a scan tool, the grounds are a good place to start.
G303 are the main ground for the FEM.
G304 is connected via C179 (C means connector) and through S139 (S means splice)
G304 is located behind the LH cowl panel C179 is located behind the LH side of the instrument panel S139 Dash panel to headlamp junction, near T/O to C192 Front Electronic Module (FEM)
You can see the FEM, G304, and C179 in the picture below. Outside of checking the connections and wiring there is not much you can do without a scan tool.

More often than not. headlights are usually 0n a fusible link or automatic breaker. and they controll both head lights at the same time. try checking the connector at the rear of the light unit. If its one of the later one piece covered units. the problem is most likly the halogen bulb. most reputable parts houses,such as AutoZone will check it out for you.
Good luck !

2000 Lincoln Navigator interior lights won't turn off and now the door ajar light is on as well. How can this be fixed, I tried wd40 as suggested it didn't work HELP!

The actuactors for your locks have a little motor in them. In this motor there is a resistor that will give out over time. Usually the locks gradually stop working over time. You can remove the actuator and take it apart and fix by removing the resistor in the motor and putting a peice of copper in its place. Takes about 30 minutes per door if you know what you are doing. Do a google search for ford windstar door lock fix and you will find several blogs with detailed descriptions of the repair.

The S Type is similar to the Lincoln LS.
These are TSBs that address battery drain on the LS.

Partial TSB
Article No.
02-9-5

• ELECTRICAL - BATTERY DRAIN DIAGNOSIS - SERVICE TIPS

Publication Date: APRIL 30, 2002
FORD: 2002 THUNDERBIRD LINCOLN: 2000-2002 LS
ISSUE: Some vehicles may exhibit excessive electrical system current draw which could result in a discharged battery and a no crank condition.
ACTION: Use the following Service Tips to monitor the vehicle electrical system for excessive battery current drain and repair as needed. Refer to the following Service Information Tips for details.
SERVICE INFORMATION Having a firm grasp on the design and normal operation of the electrical system will aid in properly diagnosing and repairing any faults with electrical components and/or circuitry. When the vehicle is at rest (ignition key turned off and removed), some amounts of battery current drain will be present since many of the modules and electronic components in the vehicle require this to sustain memory and system monitoring. The Powertrain Control Module, Antilock Brake Module, Electronic Automatic Temperature Control Module, Front Electronics Module, Rear Electronics Module, Driver Door Module, Instrument Cluster Module, Roof Opening Panel Module, Heated Seat Module, Driver Seat Module, Cell Phone Module and Vehicle Emergency Message System Module all have power supplied at all times for this purpose. Many of these modules monitor activity and communicate with each other through the Standard Corporate Protocol (SCP) Link. When the ignition key is first shut off and removed, the vehicle is exited and the doors are closed, the electrical system goes into "stand-by" mode, where the Rear Electronics Module (REM) and the Front Electronics Module (FEM) keep the System Switched Power (SSP) relays activated. After a minimum of 45 minutes, the REM and FEM will power down to prevent battery discharge. Power down mode occurs when the REM and FEM "time out" and release the ground on all 4 (four) of the SSP relays. The SSP relays are wired in a fashion in which they are either all on or all off. In other words, the SSP relays cannot be operated independent of each other. If power down does not occur, because of a system fault or errant SCP Link activity, the REM and FEM will remain energized along with the SSP relays and the other electrical devices that they provide power. The REM and FEM provide power and ground to devices such as exterior/interior lighting and many of the body modules in the vehicle. The Wiring Diagrams Manual may be referenced for additional information on the SSP relays, the REM and FEM, in Sections 13 & 59. Once the REM and FEM enter power down mode they will not energize the SSP relays until they are commanded to "wake up" by one or more of the following commands:

• Key Fob Activity (Any Command)
• Door Ajar (Any Door)
• Luggage Compartment Ajar Switch
• Drivers Power Seat Switch
• Power Tilt/Telescopic Steering Column
• Headlamps/Park Lamps On
• Key In Ignition
• Key On Ignition
• Anti-Theft Hood Switch
• Brake Pedal Position Switch
• Memory Seat Switch

BATTERY DRAIN DIAGNOSIS -------------------------------------------

please rate if this helps.

Exterior Lighting The exterior lighting outputs are zone controlled by the front electronic module (FEM) and rear electronic module (REM) in respect to the front exterior lights being controlled by the FEM and the rear exterior lights being controlled by the REM. An additional function of the lighting system is a lamp outage function which provides the indication to the driver if certain exterior bulbs are not functioning. With a bulb inoperative, the FEM or REM will send a message to the instrument cluster and message center (if equipped) which will in turn indicate to the driver the lamp is inoperative with a lamp out indicator (with the message center a message will be displayed). To provide complete input and output functionality, each exterior lamp feature will be described individually. All exterior lighting is powered by the switched system power (SSP) feature (refer to Switched System Power[SSP]). A failure of all or any of the SSP features will cause inoperative exterior lighting. When diagnosing exterior lighting, it is essential to determine if all related symptoms and DTCs are controlled by the SSP feature.
Stoplamps Brake lighting is controlled by the REM. The brake pedal position (BPP) switch is hardwired to the REM. When the brake pedal is depressed, the BPP switch will input information to the REM. Then, the REM will process the information and output to the left, right, and high mounted stoplamps. Only the left and right stoplamps will provide lamp outage indication.
The vehicle's electronic functions are divided into zones. The FEM controls the front portion of the vehicle and the REM controls the rear portion of the vehicle. These systems rely heavily on the SCP communication network in order to transmit and receive signals. As a technician it is very important to understand:

• where the input (command) originates from
• All information (messages) necessary in order for a feature to operate
• which module(s) receive(s) the input or command message
• does the module which received the input (message), control the output of the feature, or does it output a message over the SCP communication network to another module
• which module controls the output of the feature

Switched System Power (SSP)
The SSP is invoked by both the FEM and REM. This function removes power from relays that provide power to the exterior lamps, interior lamps, and power door locks. This is only accomplished when both the FEM and the REM are in sleep mode. The sleep function of the FEM and REM places the modules in sleep mode when the ignition switch is in the OFF position, and no wake up (inputs) signals occur for 30 minutes. The module will not sleep if the parking lamps or the hazard lamps are active. The following relays are controlled by the SSP function: SSP1, SSP2, SSP3, and SSP4. When either the FEM or REM are not in sleep mode, all SSP relays will be energized. When energized, each relay will supply power to multiple features/functions. For additional information, go to the SSP Index for diagnosis and testing of SSP related issues. Refer to Headlamps .
Inspection and Verification

1. Verify the customer concern by operating the stoplamps.

1. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart Mechanical Electrical

• Damaged REM

• Blown central junction box (CJB) Fuses:
  • 13 (15A)
  • 7 (15A)
  • 12 (20A)
  • 11 (10A)
• Damaged wiring harness
• Loose or corroded connections
• Damaged BPP switch

Use the colon

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