2012 Acura TL BaseFACTORY OEM SERVICE PROCEDURE

Control Unit Input Test

NOTE:
  • Before testing, troubleshoot the multiplex integrated control unit first, using B-CAN System Diagnosis Test Mode A (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A ).
  • Before testing, do the gauge control module self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ) to make sure the beeper and the indicators in the gauge control module work properly and the F-CAN line are OK.
  • Before doing the input tests, make sure the No. 12 (7.5 A) fuse in the driver's under-dash fuse/relay box is OK.

Driver's MICU 

  1. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.
  2. Remove the driver's dashboard undercover (see DRIVER'S DASHBOARD UNDERCOVER REMOVAL/INSTALLATION ).
  3. Disconnect driver's under-dash fuse/relay box connectors D, Q, and R.
    NOTE: All connector views are wire side of female terminals.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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