Civic GX Sedan L4-1.6L CNG (1998)
Engine Control Module: Programming and Relearning
How to Reset the ECM/PCM
Engine Control Module (ECM)/Powertrain Control Module (PCM) Reset Procedure
NOTE: Resetting the ECM/PCM will erase any stored DTCs and any freeze data. It will also restart all readiness code monitors.
Either of the following actions will reset the ECM/PCM.
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Use the OBD II scan tool or Honda PGM Tester to clear the ECM's/PCM's memory.
NOTE: See the OBD II scan tool or Honda PGM Tester user's manuals for specific operating instructions.
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Turn the ignition switch OFF. Remove the BACK UP (7.5 A) fuse from the under-hood fuse/relay box for 10 seconds.
NOTE: Removing the BACK UP (7.5 A) fuse cancels the clock and the radio presets. Make note of the customer's presets so you can reset them.
Final Procedure
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/PCM, the MIL will stay on when the ignition switch is
turned ON (II).
2. Do the ECM/PCM Reset Procedure.
3. Turn the ignition switch OFF.