Diesel Data: Automotive Repair
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PCM Updating and Substitution For Testing

PCM Updating and Substitution for Testing
Special Tools Required
Honda interface module (HIM) EQS05A35570

Use this procedure when you have to substitute a known-good PCM in a troubleshooting procedure. Update the PCM only if the PCM does not already have the latest software loaded.

NOTE: Do not turn the ignition switch OFF while updating the PCM. If you turn the ignition switch OFF before completion, the PCM can be damaged.
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