Bench Testing: Brush
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Acura 3.2TL, 2003 Acura 3.2CL, 2002 Acura 3.2TL, 2002 Acura 3.2CL, and 2001 Acura 3.2TL. However, it is still accessible from the selected car via links, so may be relevant.
Measure the length of both brushes "A" with a vernier caliper "B". See Fig 1. If either brush is shorter than the service limit, replace the brush assembly. If brush length is OK, go to ROTOR SLIP RING .