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Retrieving Codes
ERASING CODES FROM EEC-IV SYSTEMS
37 Chapter 4
ERASING CODES FROM EEC-IV SYSTEMS
IMPORTANT:
Continuous Memory Codes are the only ones that
are saved in the vehicle’s computer long-term memory. KOEO
and KOER Self Test fault codes represent problems that are
present at the time these tests are performed and are detected
by the computer only while the problem is present. KOEO and
KOER codes are not saved in the vehicle’s computer memory,
and if the problem that caused these faults to set is repaired,
these codes will no longer be present when the Self Tests are
performed.
This procedure clears Continuos Memory codes from the
vehicle's computer memory.
•
Erase codes only when all repairs have been
completed.
•
Always observe safety precautions before and during
testing process.
•
ALWAYS check Code Reader battery before retrieving
fault codes.
1. Turn ignition off.
2. Turn the Code Reader off (press the ON/OFF button, as
necessary), then connect the Code Reader to the vehicle's
test connectors.
■ Both the large and small connectors must be
connected.
3. Turn on ignition. DO NOT START THE ENGINE.
WARNING:
Keep away from any potentially moving
parts.
4. Press and release the ON/OFF button to turn the Code
Reader "ON".
■ Three zeros should be visible on the display at this
time.
5. Press and release the TEST/HOLD button to put the
Code Reader in Test Mode.
■ When the Code Reader is put into test mode, it
signals the vehicle's computer to start performing the
Self-Test. The display will show a "Triangle" icon on
the lower right hand corner of the display to indicate
that the Code Reader is linked to the vehicle's
computer and is in test mode.
4
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