| DTC B1178: | F-CAN Communication Line Error |
| DTC B1168: | Gauge Control Module Lost Communication with ECM/PCM (Engine Messages) |
| DTC B1169: | Gauge Control Module Lost Communication with the PCM (A/T Messages) |
| 1. | Clear the DTCs using the Honda PGM Tester or the HDS. |
| 2. | Turn the ignition switch OFF then back to the ON (II). |
| 3. | Start and run the engine for at least 5 seconds then turn the engine off. |
| 4. | Check for DTCs by selecting the DTCs MENU (DTCs) from the Honda PGM Tester or the HDS. Is DTC B1178, B1168 and/or B1169 indicated? YES - Go to 5. NO - Intermittent failure, the F-CAN communication line is OK at this time.n |
| 5. | Check for DTCs in the ECM/PCM. Are any DTCs indicated? YES - Troubleshoot the ECM/PCM DTCs. NO - Go to 6. |
| 6. | Perform the gauge control module input test. Are all inputs OK? YES - Go to 7. NO - Repair the faulty input then recheck for DTCs.n |
| 7. | Substitute a known-good gauge control module. |
| 8. | Clear the DTCs using the Honda PGM Tester or HDS. |
| 9. | Turn the ignition switch OFF then back to the ON (II). |
| 10. | Start and run the engine for at least 5 seconds then turn the engine off. |
| 11. | Check for DTCs by selecting the DTCs MENU (DTCs) from the Honda PGM Tester or the HDS. Is DTC B1178, B1168 and/or B1169 indicated? YES - Replace the ECM/PCM. NO - The original gauge control module is faulty; replace the gauge control module.n |