| DTC U0155: | Lost Communication with Gauge Control Module |
| 1. | Clear the DTC with the HDS. |
| 2. | Turn the ignition switch ON (II). |
| 3. | Check whether the DTC U0155 is indicated in the DTCs/Freeze Data in PGM FI Mode Menu with the HDS. Is DTC U0155 indicated in the PGM FI system? YES - Troubleshoot for DTC U0155 in the PGM-FI System. NO - Go to 4. |
| 4. | Check whether the DTC U0155 is indicated in the DTCs/Freeze Data in A/T Mode Menu with the HDS. Is DTC U0155 indicated? YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, then recheck. If the symptom/indication goes away with a known-good PCM, replace the original PCM.n NO - Intermittent failure, the system is OK at this time.n |