Mike's Workshop Manuals
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Honda
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1990
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Prelude Si, Standard
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Repair and Diagnosis
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Engine Performance
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System
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Engine Controls - Tests W/Codes - 2.1L PGM-FI
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Introduction
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Clearing Codes
Clearing Codes
To reset ECU, remove CLOCK fuse (Prelude PGM-EFI). Leave fuse out for 10 seconds to reset ECU.