Adaptive cruise control (ACC) activation indicator (green) does not go off

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

Do the gauge control module self-diagnostic function (see SELF-DIAGNOSTIC FUNCTION ).
Is the gauge control module OK?

YES -Go to step 2.

NO -Substitute a known-good gauge control module, and recheck. If the problem goes away, replace the original gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
Remove the driver's airbag (see DRIVER'S AIRBAG REPLACEMENT ).
Disconnect the 20P connector (A) from the cable reel.

Fig 1: Identifying 20P Connector On Cable Reel
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to ON (II), then wait for 10 seconds.
Watch the ACC activation indicator.
Does the ACC activation indicator go off?

YES -Test the adaptive cruise control (ACC) combination switch (see ADAPTIVE CRUISE CONTROL (ACC) COMBINATION SWITCH TEST ).

NO -Repair a short to ground in the wire between the adaptive cruise control (ACC) combination switch and the gauge control module.