38
User's
Manual
V1.00
History codes are also referred to as past codes that indicate intermittent
DTCs that are not currently active. Code history is number of engine starts
since DTC(s) were first detected (to see if they are current or intermittent).
Self-diagnostic lets you manually activate system tests that check for DTCs.
Usually it includes a KOEO (Key-on, engine-off) test and a KOER (key-on,
engine-running) test.
To read codes from a vehicle:
1. Press
Read Codes
from Select Diagnostic Function menu. A code list
including code number and its description displays. The red icon
means there is help information available for the code. The green icon
means there is freeze frame available.
Figure 8-10 Sample Trouble Code Screen
●
Freeze Frame
- select one fault code from the code list and click
Freeze
Frame
button at the bottom bar. The screen will display freeze frame detail
data, a snapshot of critical vehicle operating conditions automatically
recorded by the on-board computer at the time of the DTC set. It is a good
function to help determine what caused the fault.
Figure 8-11 Sample Freeze Frame Screen
●
Help
- select one fault code from the code list and click
Help
button on the
screen. The screen will display the detailed descriptions about the fault
code and repair guide.