Civic GX Sedan L4-1.6L CNG (1998)
Engine Control Module: Service and Repair
Known-Good ECM/PCM Substitution
How to Substitute the PCM
Use this procedure when you have to substitute a known-good PCM in a troubleshooting procedure.
1. Remove the PCM from the vehicle.
2. Install a known-good PCM in the vehicle.
3. Rewrite the immobilizer code with the PCM replacement procedure on the Honda PGM Tester. It allows you to start the engine.
4. After completing your tests, reinstall the original PCM and rewrite the immobilizer code with the PCM replacement procedure on the Honda PGM
Tester again.
