DTC 4-9: Abs Down
WARNING: This page is about a different car, the 1998 Acura 3.5RL and 1997 Acura 3.5RL. However, it is still accessible from the selected car via links, so may be relevant.
Start engine. If TCS and ABS indicator lights are on, diagnose ABS DTC first. If TCS indicator light is only light on, check for poor connection to ABS control unit. If connection is okay and problem returns, replace TCS control unit. Retest system.