Computer replacement

Tiny
YEZID
  • MEMBER
  • 2004 FORD FIESTA
  • 1.4L
  • 4 CYL
  • MANUAL
  • 1,352,677 MILES
How to replace a computer?
Wednesday, January 1st, 2020 AT 8:40 PM

2 Replies

Tiny
TOUGHDIVER
  • MECHANIC
  • 224 POSTS
Hi,

I attached a video on replacing the ECU please check it out. Please let us know if this repaired your car, If you need more info. we will get it for.

Thank you
Joe T.

https://youtu.be/xnaZJClZedk
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Thursday, January 2nd, 2020 AT 12:50 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello,

I added these instructions on how to the job.

POWERTRAIN CONTROL MODULE (PCM) RESET

Description
All OBD II scan tools support the powertrain control module (PCM) reset.

The PCM Reset allows the scan tool to command the PCM to clear all emission-related diagnostic information. When resetting the PCM, a DTC P1000 will be stored in the PCM until all the OBD II system monitors or components have been tested to satisfy a drive cycle, without any other faults occurring. For more information about a drive cycle, refer to Drive Cycles.

The following events occur when a PCM reset is performed:
- Clears the number of Diagnostic Trouble Codes (DTCs).
- Clears the DTCs.
- Clears the freeze frame data.
- Clears diagnostic monitoring test results.
- Resets status of the OBD II system monitors.
- Sets DTC P1000.

Resetting Keep Alive Memory (KAM)
Resetting Keep Alive Memory will return PCM memory to its default setting. Adaptive learning contents such as idle speed, refueling event, and fuel trim are included. A PCM Reset (described above) is also part of a KAM Reset. Both can be useful in post repair retest.

After Keep Alive Memory has been reset, the vehicle may exhibit certain driveability concerns. It will be necessary to drive the vehicle to allow the PCM to relearn values for optimum driveability and performance.

This function may not be supported by all scan tools. Refer to scan tool manufacturer's instruction manual.

If an error message is received or the scan tool does not support this function, disconnecting the battery ground cable for a minimum of 5 minutes may be used as an alternative procedure.

Please let us know if you need anything else to get the problem fixed.
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Thursday, January 2nd, 2020 AT 4:12 PM

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