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Home >> Acura >> 2009 >> CSX Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 84 (Keyless Access System) >> DTC Troubleshooting >> DTC U1282: Keyless Access Control Unit Lost Communication With Driver's MICU

DTC U1282: Keyless Access Control Unit Lost Communication With Driver's MICU

WARNING: This page is about a different car, the 2010 Acura TL and 2009 Acura TL. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
  1. Clear the DTCs with the HDS.
  2. Press the engine start/stop button to select the OFF, ACC, and ON mode.
  3. Wait for at least 6 seconds.
  4. Check for DTCs with the HDS.

    Is DTC U1282 indicated? 

    YES  -Go to the driver's MICU input test, and do all power, ground, and communication input tests (see MICU INPUT TEST ). If the tests prove OK, replace the driver's under-dash fuse/relay box (see DRIVER'S UNDER-DASH FUSE/RELAY BOX (MICU) REMOVAL/INSTALLATION ).

    NO  -Intermittent failure, the system is OK at this time. Check for loose or poor connections at driver's under-dash fuse/relay box connector P (20P) and the related units.