Toyota 2003 Corolla Owner's Manual page 105

If any of the following conditions then oc-
curs, there is some trouble in the cruise
control system.
The indicator light does not come on.
D
The indicator light flashes again.
D
The indicator light goes out after it
D
comes on.
If this is the case, contact your Toyota
dealer and have your vehicle inspected.
'03 Corolla U (L/O 0201)
2003 MY COROLLA_U (OM12744U)
101