Ford 1997 Aerostar Manual page 13

Rear Anti-Lock (ABS) Brake Warning Light
To check the rear ABS brake warning light, turn
the ignition key to the ON position. The rear
ABS brake warning light should glow
momentarily.
NOTE: If it does not glow momentarily, have
your vehicle's electrical system checked
immediately.
NOTE: If the rear ABS brake warning light
begins to flash in a repeating flash
sequence, check the rear anti-lock
brake system continuous power fuse
and brake lights for proper operation.
Rear anti-lock warning light symbol
If the anti-lock brake system warning
light remains on or comes on while
driving, have the braking system checked
by a qualified service technician as soon
as possible.
NOTE: If a fault occurs in the anti-lock
system, and the brake warning light is
not lit, the anti-lock system is disabled
but normal brake function remains
operational.
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RWARNING