Genisys User Guide - OTC

7: Diagnostic Trouble Codes
Read Codes
Code History (Chrysler/Jeep)
The Code History function shows how many times
the engine has been started since each fault was first
detected. From this information, you can determine
if a DTC is current or intermittent.
1 Follow the steps in Read and Display Codes on page
37 to display the Diagnostic Trouble Code History
screen.
Figure 7.7: Diagnostic Trouble Code History Screen
2 View the list and optionally print it.
3 Be aware of the following:
The “first” DTC in the list is the oldest.
The number of engine starts (cycles) is since
the code was first detected.
If engine starts is 1, the DTC occurred during
the last ignition cycle and is current.
If engine starts is 2 or more, the code is present
as an intermittent code, but is not current.
If no codes are found, a number shows how
many engine starts have occurred (up to 255
times) since the codes were last cleared.
4 When finished, use the EXIT key to return to previous
screens.
Trip Counts (Chrysler/Jeep)
The Trip Counts function tells you how many “trips”
have occurred since the DTCs were last cleared.
1 Follow the steps in Read and Display Codes on page
37 to display the Trip Counts screen.
Figure 7.8: Trip Counts Screen
2 Be aware of the following:
Warm-ups are the number of times the engine
has reached operating temperature.
Trips are the number of times the engine has
been warmed-up and driven long enough to
meet critical system conditions.
3 When finished, use the EXIT key to return to previous
screens.
40 Scan Tool User Guide