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Pcm Removal/Installation: Notes

CAUTION:
  • If configuration and reprogramming is not performed when the PCM is replaced with a new one, the vehicle specification information and PCM software is not stored in the PCM and the system will not operate normally.
  • When performing configuration and reprogramming, it is necessary to read the vehicle specification information from the PCM before replacing it. Connect the M-MDS to the vehicle and perform vehicle identification before removing the PCM. The vehicle specification information is temporarily stored in the M-MDS.
NOTE:
  • The PCM prior to replacement stores the vehicle specification information.
  • A new PCM does not store any vehicle specification information.
  • If the vehicle specification information PCM prior to replacement cannot be read, perform the configuration using As-Built data.
  1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  2. Disconnect the PCM connectors. (See PCM CONNECTOR CONNECTION NOTE .)
    G11436155Courtesy of MAZDA MOTORS CORP.
  3. Remove the clips from the PCM bracket.
    G11436156Courtesy of MAZDA MOTORS CORP.
  4. Loosen the bolt.
    Fig 1: PCM Bracket Bolts With Torque Specification
    G11436157Courtesy of MAZDA MOTORS CORP.
  5. Remove the bolts. (See PCM BRACKET INSTALLATION NOTE .)
    Fig 2: PCM Bracket Bolts With Torque Specification
    G11436158Courtesy of MAZDA MOTORS CORP.
  6. Remove the nuts.
    Fig 3: PCM Bracket Nuts With Torque Specification
    G11436159Courtesy of MAZDA MOTORS CORP.
  7. Remove the PCM bracket. (See PCM BRACKET TEMPORARY INSTALLATION NOTE .)
    G11436160Courtesy of MAZDA MOTORS CORP.
  8. Remove the PCM.
  9. Remove the bolt.
    Fig 4: PCM Bracket Bolts With Torque Specification
    G11436161Courtesy of MAZDA MOTORS CORP.
  10. Remove the clip from the PCM bracket.
    G11436162Courtesy of MAZDA MOTORS CORP.
  11. Remove the bolt. (See PCM BRACKET INSTALLATION NOTE .)
    G11436163Courtesy of MAZDA MOTORS CORP.
  12. Remove the PCM bracket.
  13. Install in the reverse order of removal.
  14. When replacing the PCM on the vehicles, perform the following:
    NOTE:
    • If configuration cannot be performed by reading/writing of the vehicle specification information, perform the configuration using As-Built information after replacing the PCM. (See PCM CONFIGURATION (USING AS-BUILT DATA) .)
    1. Perform the PCM configuration. (See PCM CONFIGURATION (USING READ/WRITE FUNCTION) .)
    2. Perform the immobilizer system-related part programming. (See IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING .)
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