DTC U1296: Gauge Control Module Lost Communication With Multi-Information Display Unit Honda Civic IX

Note. If the multi-information display does not work normally, go to audio system symptom troubleshooting "multi-information display does not work". If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

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1. Problem verification: 1. Clear the DTCs with the HDS. 2. Turn the ignition switch to LOCK (0) and then back to ON (II). 3. Wait for at least 6 seconds. 4. Check for DTCs with the HDS. Is DTC U1296 indicated? YES: Go to step 2. NO: Intermittent failure, the system is OK at this time. Check for loose or poor connections.
2. Determine possible failure area (gauge control module (tach) power and ground, B_CAN line): 1. Select B-CAN CONTROL UNITS INFORMATION from the BODY ELECTRICAL SYSTEM SELECT menu, and then select CHECK CONNECTED CONTROL UNITS. 2. Check the DETECT/NOT AVAILABLE information of the MULTI-INFORMATION DISPLAY UNIT. Is DETECT indicated? YES: Go to step 7 . NO: Go to step 3.
3. Fuse check: 1. Check the following fuse. Fuse No. A29 (10 A) Location Under-hood fuse/relay box Is the fuse OK? YES: Go to step 4. NO: Replace the fuse. If the fuse blows again, repair a short to ground in the No. A29 (10 A) fuse circuit.
4. Open wire check (+B_BACK_UP line): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connector. Multi-information display unit connector A (32P) 3. Measure the voltage between test points 1 and 2. Test condition IG LOCK (0) Multi-information display unit connector A (32P): disconnected Test circuit +B_BACK_UP Test point 1 Multi-information display unit connector A (32P) No. 16 (WHT) Test point 2 Body ground Is there battery voltage? YES: Go to step 5. NO: Repair an open or high resistance in the wire.
5. Open wire check (GND line): 1. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Multi-information display unit connector A (32P): disconnected Test circuit GND Test point 1 Multi-information display unit connector A (32P) No. 10 (BRN) Test point 2 Body ground Is there continuity? YES: Go to step 6. NO: Repair an open or high resistance in the ground wire or poor ground (G502).
6. Open wire check (B_CAN lines): 1. Disconnect the following connector. Gauge control module (tach) 32P connector 2. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Multi-information display unit connector A (32P): disconnected Gauge control module (tach) 32P connector: disconnected Test circuit B_CAN-H Test point 1 Gauge control module (tach) 32P connector No. 30 (PNK) Test point 2 Multi-information display unit connector A (32P) No. 31 (PNK) Is there continuity? YES: An open or poor connection in the B_CAN-L wire between the multi-information display unit and the gauge control module (tach). NO: An open or poor connection in the B_CAN-H wire between the multi-information display unit and the gauge control module (tach).
7. Open wire check (B_CAN lines): 1. Turn the ignition switch to LOCK (0). 2. Disconnect the following connectors. Gauge control module (tach) 32P connector Multi-information display unit connector A (32P) 3. Check for continuity between test points 1 and 2. Test condition IG LOCK (0) Gauge control module (tach) 32P connector: disconnected Multi-information display unit connector A (32P): disconnected Test circuit B_CAN-H Test point 1 Gauge control module (tach) 32P connector No. 30 (PNK) Test point 2 Multi-information display unit connector A (32P) No. 31 (PNK) Is there continuity? YES: An open or poor connection in the B_CAN-L wire between the multi-information display unit and the gauge control module (tach). NO: An open or poor connection in the B_CAN-H wire between the multi-information display unit and the gauge control module (tach).