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.

Fig 1: Identifying PCM

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Disconnect the negative battery terminal. (Refer to NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
Disconnect the PCM connectors. (Refer to PCM CONNECTOR CONNECTION NOTE .)

Fig 2: Disconnecting PCM Connectors
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Remove the clips from the PCM bracket.

Fig 3: Removing Clips From PCM Bracket
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Loosen the bolt.

Fig 4: Loosening Bolt
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Remove the bolts. (Refer to PCM BRACKET INSTALLATION NOTE .)

Fig 5: Removing Bolts
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Remove the nuts.

Fig 6: Removing Nuts
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Remove the PCM bracket. (Refer to PCM BRACKET TEMPORARY INSTALLATION NOTE .)

Fig 7: Removing PCM Bracket
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Remove the PCM.
Remove the bolt.

Fig 8: Removing Bolt
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Remove the clip from the PCM bracket.

Fig 9: Removing Clip From PCM Bracket
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Remove the bolt. (Refer to PCM BRACKET INSTALLATION NOTE .)

Fig 10: Removing Bolt
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Remove the PCM bracket.
Install in the reverse order of removal.
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. (Refer to PCM CONFIGURATION (USING AS-BUILT DATA) .)
- (1) Perform the PCM configuration. (Refer to PCM CONFIGURATION (USING READ/WRITE FUNCTION) .)
- (2) Perform the immobilizer system-related part programming. (Refer to IMMOBILIZER SYSTEM-RELATED PARTS PROGRAMMING .)