Honda Prelude 1993 Service Manual page 291

ll. Engine Control Module {ECM} Reset Procedure
1. Turn the ignition switch off.
2. Remove the the CLOCK RAD lO ( 1 O A) f use f rom the under-hood tuse/relav box for 1 O seconds to reset the ECM.
NOTE:
a Disconnecting the CLOCK RADIO (10 A ) fuse also cancels the radio preset stations and the clock setting.
Make note of the radio presets before removing the fuse so you can.eset them.
a The radio may have a coded theft protection circuit. Be sure you get the customer's code number before removing
the CLOCK RADIO {10 A) fuse.
Final Procedure (this procedure must be done sfter any troubleshooting)
1. Remove the jumper wire.
NOTE: lf the service check connector is jumped, the MIL will stay on.
2, Do the ECM Reset Procedure.
3, Set the radio preset stations and the clock.
t .
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