RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 6 (1998)
ABS Light: Description and Operation
Rear Wheel Antilock Brakes
The amber ABS warning lamp is used to alerts the driver of RWAL problem and identify Diagnostic Trouble Codes (DTCs) stored in the Controller
Antilock Brake (CAB) memory.
The ABS warning lamp illuminates when ignition voltage is supplied to the bulb and a ground is provided for the bulb. The bulb has ignition voltage
supplied to it anytime the ignition switch is in the RUN or START positions. A ground for the bulb is provided by the CAB only. A circuit in the CAB
monitors the brake warning lamp switch and the ignition switch bulb check circuit (grounds the brake warning lamp bulb during the START position).
When the CAB identifies a ground on this circuit, the CAB, illuminates the ABS warning lamp.
