Acura NSX 1991 Manual page 208

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II. Engine Control Module (ECM) Reset Procedure
Either of the following actions, will reset the ECM.
• Using the OBD-II scan tool or Honda PGM Tester to clear the ECM's memory.
NOTE: See the OBD-II scan tool or Honda PGM Tester user's manuals for specific operating instructions.
• Turn the ignition switch OFF. Remove the CLOCK (7.5 A) fuse from the under-hood fuse/relay box for 10 seconds.
UNDER-HOOD
FUSE/RELAY BOX
III. Final Procedure (this procedure must be done after any troubleshooting)
1. Remove the SCS Service Connector if it is connected.
NOTE: If the SCS service connector is connected and there are no DTCs stored in the ECM, the MIL will stay on
when the ignition switch is turned on.
2. Do the ECM Reset Procedure.
3. Turn the ignition switch OFF.
4. Disconnect the OBD-II scan tool or Honda PGM Tester from the Data Link Connector,
Table of Contents
CLOCK
(7.5 A) FUSE