Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD1999ESCORT ZX2 L4-2.0L DOHC VIN 3REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONPROGRAMMING AND RELEARNING
1999 Ford Escort ZX2 L4-2.0L DOHC VIN 3
Programming and Relearning
1999 Ford Escort ZX2 L4-2.0L DOHC VIN 3SECTION Programming and Relearning
DESCRIPTION
Flash Electrically Erasable Programmable Read Only Memory is contained in an Integrated Circuit (IC) internally to the PCM. The EEPROM contains the vehicle strategy as well as any calibration information specific to the vehicle.
The IC is reprogrammable and at times it may become necessary to reprogram or reflash the entire contents. This is usually due to either an after production strategy change or the Vehicle Identification (VID) area has been previously reprogrammed and has reached its limit. The VID block area can be tailored to accommodate various hardware changes made to the vehicle since production. The VID block is a section of memory within the IC which includes items such as octane adjust, fuel octane, fuel type, tire size and axle ratio.
PROGRAMMING A REPLACEMENT PCM
A replacement PCM will display a label as shown. This indicates the need to retrieve VID data from the original PCM before removing from the vehicle. Refer to the flash VID block update procedure. After retrieving the VID data from the original PCM, install the new PCM. Select "Restore PCM config. (1)" to download the stored data. If the original PCM is nonfunctional, it becomes necessary to manually reprogram the VID block. The scan tool is used to perform this procedure and is done through the "PCM Programming" selection as described by the flash EEPROM procedure following. Follow screen instructions.
Flash EEPROM Procedure
When using the NGS to reprogram the entire IC contents, the NGS Flash kit will be used. The Service Bay Technical System (SBTS) is used to download the new strategy with calibration onto the NGS static RAM card (data transfer card). The card is part of the flash kit. Plug the NGS flash cable into the underdash OBD II connector. Follow the NGS screen instructions under "PCM Programming" or refer to the flash instruction manual provided in the kit. VID block information can also be viewed and changed during this procedure.
Flash VID Block Procedure
When using the NGS scan tool, the Ford Service Function (FSF) card is used along with the NGS flash cable. Plug the cable into the underdash OBD II connector. From the main menu, select 'Service Bay Functions", "PCM-Powertrain Control Module" and then "Programmable Module Installation".
The screen will now display two selections. The first is for old PCM information to be retrieved and stored within the NGS. The second is for restoring the new PCM with information which has been retrieved from the old PCM. Follow screen instructions or refer to the supplement instruction sheet included with the Ford Service Function card. Next, either a transfer of data from the old module to the new module or a manual update must be performed on the VID block. Follow screen instructions or refer to the supplement instruction sheet included with the Ford Service Function card. If the VID block has been reprogrammed previously, the scan tool will display a message. This message will indicate the need to reflash the entire IC.
NOTE: If using a generic scan tool, follow the instruction manual provided by the scan tool manufacturer.
Flash Electrically Erasable Programmable Read Only Memory is contained in an Integrated Circuit (IC) internally to the PCM. The EEPROM contains the vehicle strategy as well as any calibration information specific to the vehicle.
The IC is reprogrammable and at times it may become necessary to reprogram or reflash the entire contents. This is usually due to either an after production strategy change or the Vehicle Identification (VID) area has been previously reprogrammed and has reached its limit. The VID block area can be tailored to accommodate various hardware changes made to the vehicle since production. The VID block is a section of memory within the IC which includes items such as octane adjust, fuel octane, fuel type, tire size and axle ratio.
PROGRAMMING A REPLACEMENT PCM
A replacement PCM will display a label as shown. This indicates the need to retrieve VID data from the original PCM before removing from the vehicle. Refer to the flash VID block update procedure. After retrieving the VID data from the original PCM, install the new PCM. Select "Restore PCM config. (1)" to download the stored data. If the original PCM is nonfunctional, it becomes necessary to manually reprogram the VID block. The scan tool is used to perform this procedure and is done through the "PCM Programming" selection as described by the flash EEPROM procedure following. Follow screen instructions.
Flash EEPROM Procedure
When using the NGS to reprogram the entire IC contents, the NGS Flash kit will be used. The Service Bay Technical System (SBTS) is used to download the new strategy with calibration onto the NGS static RAM card (data transfer card). The card is part of the flash kit. Plug the NGS flash cable into the underdash OBD II connector. Follow the NGS screen instructions under "PCM Programming" or refer to the flash instruction manual provided in the kit. VID block information can also be viewed and changed during this procedure.
Flash VID Block Procedure
When using the NGS scan tool, the Ford Service Function (FSF) card is used along with the NGS flash cable. Plug the cable into the underdash OBD II connector. From the main menu, select 'Service Bay Functions", "PCM-Powertrain Control Module" and then "Programmable Module Installation".
The screen will now display two selections. The first is for old PCM information to be retrieved and stored within the NGS. The second is for restoring the new PCM with information which has been retrieved from the old PCM. Follow screen instructions or refer to the supplement instruction sheet included with the Ford Service Function card. Next, either a transfer of data from the old module to the new module or a manual update must be performed on the VID block. Follow screen instructions or refer to the supplement instruction sheet included with the Ford Service Function card. If the VID block has been reprogrammed previously, the scan tool will display a message. This message will indicate the need to reflash the entire IC.
NOTE: If using a generic scan tool, follow the instruction manual provided by the scan tool manufacturer.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.