Equus 3120 - OBD 2&1 Tool Kit - Manual (Page 52)

50 OBD2 & 1
E
Ford OBD1 Systems
CODE RETRIEVAL PROCEDURES - KOEO TEST
9. If the Tool was able to link to the vehicle successfully a "Code
retrieval was successful..." message shows temporarily on the
Tool's LCD display followed by any retrieved DTCs.
■ The Tool will display a code only if
codes are present in the vehicle's
computer memory.
■ If no problems are found during the
KOEO Self-Test, the computer sends
a "PASS" code (code 11 or 111) to
the Tool.
■ If no Continuous Memory codes are
present in the vehicle's computer
memory, the Tool will display a
"PASS" code (code 11 or 111).
Most Ford EEC-IV vehicle com-
puters up to 1991 use a two-digit
code system. From 1991 to 1995
most use a three digit code system.
10. If more than one code was retrieved, press DTC SCROLL but-
ton, as necessary, to display additional codes one at a time.
In the case of long code definitions, a small arrow is shown
in the upper/lower right-hand corner of the code display area
to indicate the presence of additional information. Use the
and buttons, as necessary, to view the additional
information.
11. Disconnect the Tool from the vehicle and turn the ignition key OFF.
12. To prolong battery life, the Tool automatically shuts "Off" after
approximately three minutes of no button activity. The DTCs
retrieved will remain in the Tool's memory, and may be viewed at
any time. If the Tool's batteries are removed, or if the Tool is re-
linked to a vehicle to retrieve codes, any prior codes in its memory
are automatically cleared.
■ See Viewing DTCs in the Tool's Memory on page 13 to view
DTCs stored in the Tool's memory.
13. Follow the testing and repair procedures outlined in the vehicle's
service repair manual to correct "hard" DTCs. Codes should be
addressed and eliminated in the order they were received, erasing
(see Erasing DTC's on page 80) and retesting after each repair is
done to be sure the fault was eliminated.