| 1. | Check the No. 18 (15 A) fuse in the under-hood fuse/relay box. Is the fuse OK? YES - Go to 2. NO - Replace the fuse.n |
| 2. | Remove the ignition coil relay from the under-hood fuse/relay box and test it. Is the relay OK? YES - Go to 3. NO - Replace the ignition coil relay.n |
| 3. | Measure the voltage between ignition coil relay 4P socket terminal No. 2 and body ground, then terminal No. 4 and body ground.
Is there battery voltage? YES - Go to 4. NO - Replace the under-hood fuse/relay box.n |
| 4. | Check for continuity between ignition coil relay 4P socket terminal No. 1 and the No. 1 ignition coil 3P connector terminal No. 3.
Is there continuity? YES - Go to 5. NO - Repair an open in the wire between ignition coil relay 4P socket terminal No. 1 and ignition coil 3P connector terminal No. 3.n |
| 5. | Connect the Honda Diagnostic System (HDS) to the data link connector (DLC). |
| 6. | Turn the ignition switch ON (II). |
| 7. | Make sure the HDS communicates with the vehicle and the ECM/PCM. If it doesn't, troubleshoot the DLC circuit. |
| 8. | Jump the SCS line with the HDS, then turn the ignition switch OFF. NOTE: This step must be done to protect the engine control module (ECM)/powertrain control module (PCM) from damage. |
| 9. | Disconnect ECM/PCM connector A (44P). |
| 10. | Check for continuity between ignition coil relay 4P socket terminal No. 3 and body ground.
Is there continuity? YES - Repair a short in the wire between ignition coil relay 4P socket terminal No. 3 and the ECM/PCM (A20).n NO - Go to 11 |
| 11. | Check for continuity between ignition coil relay 4P socket terminal No. 3 and ECM/PCM connector terminal A20.
Is there continuity? YES - The system is OK at this time. Check for loose or poor connections at the ignition coil relay and the ECM/PCM (A20).n NO - Repair an open in the wire between ignition coil relay 4P socket terminal No. 3 and the ECM/PCM (A20).n |