Genisys User Guide - OTC
Genisys User Guide - OTC
Genisys User Guide - OTC
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Failure Records —datastream “snapshots”<br />
automatically recorded by the ECU that show<br />
actual data values at the time DTC(s) occurred<br />
DTC Status — information about DTCs that<br />
have occurred a predetermined number of<br />
times, such as pass or fail this ignition cycle,<br />
times failed, etc.<br />
5 Do one of the following:<br />
.<br />
If the DTC Information screen appears (Figure<br />
7.5), go to step 6.<br />
If the Failure Records Selection screen<br />
appears. Go to Failure Records (GM / Saturn<br />
/ Isuzu) on page 44.<br />
If the GM DTC Status Selection screen<br />
appears. Go to DTC Status (GM / Saturn /<br />
Isuzu) on page 45.<br />
NOTE: If there are no DTCs, a message appears<br />
to tell you this.<br />
Figure 7.5: DTC Information Screen<br />
NOTE: GM codes are generally listed as A, B, C, or D in<br />
order of importance for repair.<br />
6 View the DTC list and optionally print it.<br />
NOTE: For some vehicles, the DTC Information<br />
screen has a Pathfinder function key. This function<br />
key lets you access the Pathfinder function from<br />
within the scan diagnostic application. For details,<br />
refer to 8: Pathfinder on page 49.<br />
7 When finished viewing the list, use the EXIT key to<br />
return to previous screens.<br />
NOTE: Use the Clear Codes function to erase the codes<br />
from a vehicle’s ECU. For details, refer to Clear Codes on<br />
page 48.<br />
Freeze Frame (OBD II<br />
7: Diagnostic Trouble Codes<br />
Read Codes<br />
The Freeze Frame function lets you view datastream<br />
“snapshots” that were automatically recorded by the<br />
ECU when one or more DTCs occurred. By viewing<br />
the actual data values from the time of a fault, you<br />
may be able to determine what caused the fault.<br />
1 Follow the steps in Read and Display Codes on page<br />
37 to display the Freeze Frame Selection screen.<br />
Figure 7.6: Freeze Frame Selection Screen and DTC Freeze Frame<br />
Screen.<br />
2 Select a Frame and press the ENTER key to display<br />
the snapshot data (shown above).<br />
NOTE: Each frame contains a snapshot from when<br />
a DTC occurred.<br />
3 Use the EXIT key to return to previous screens.<br />
Scan Tool <strong>User</strong> <strong>Guide</strong> 39