Review Codes - Actron 9640 User Manual

Ford Historic Self-Test Routines
Continuous Memory Codes (codes set previously under normal driving
conditions) are available after reading KOEO Codes. They are indicated
as Memory Codes by the scan tool and are transmitted after KOEO
Codes.
After viewing and noting the KOEO
codes, use the DOWN arrow key to view
Continuous Memory codes.
When done, press FUNC to return to
the Ford Function List.
Read KOER Codes
The Read KOER Codes function activates the KOER
(Key-On-Engine-Running) self-test which retrieves KOER DTCs that are
present when the engine is running.When the trouble condition is inactive, the
KOER Code will no longer be sent through the data stream. This function also
performs a Computed Timing Check for EEC-IV vehicles manufactured from
1984 through 1991.
The DTCs are transmitted in two formats which transmit the same information:
• Slow Codes are regular service codes that allow the user to identify the
faults with an analog voltmeter or the check engine light. Slow codes are
transmitted within 3 minutes.
• Fast Codes are transmitted within seconds and must be read with a
diagnostic tool. MECS vehicles do not support Fast Codes.
! WARNING
!
CAUTION
!
CAUTION
Select Read KOEO Codes from the
Ford Function List and press ENTER.
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6 – 3
Exhaust gases are harmful or lethal. Always Operate
vehicle in a well-ventilated area.
The KOER test is done with the engine running. Do not
over-rev engine. Observe all safety precautions.
Avoid Cooling Fan! It May Turn On During Test.
Memory Code
MAP Sensor Signal
Voltage Higher or
Lower Than Expected~
Ford Function List ?
1)Read KOEO Codes
` 2)Read KOER Codes [

3)Review Codes

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