34
Scan Tool User Guide
Read Codes
6: Diagnostic Trouble Codes
Figure 6.19: Wiggle Test Screens
—
No Fault and Fault Detected
8
With the test screen displayed, manually wiggle the
vehicle wires and connections or drive the vehicle to
recreate a suspected intermittent failure condition. If a
fault is detected, the message “FAULT DETECTED”
appears on the screen, as shown above.
WARNING: Maintain adequate clearance around
moving components or belts during testing. Moving
components and belts can catch loose clothing, body
parts, or test equipment and cause serious damage or
personal injury.
9
When finished, press the
Exit
function key to
complete the test.
10
Use the
EXIT
key to return to previous screens.
NOTE:
When finished, do a KOEO test (see
Self-Diag-
nostics (Ford / Mazda)
on
page 31
).
Failure Records (GM / Saturn / Isuzu)
The Failure Records function lets you view
datastream “snapshots” that were automatically
recorded by the ECU when DTC(s) occurred. By
viewing the actual data values from the time of a
fault, you may be able to determine what caused the
fault.
1
Follow the steps in
Read and Display Codes
on
page
27
to display the Failure Record Selection screen.
.
Figure 6.20: Failure Records Selection Screen and DTC Failure
Record Screen
2
Select a
Failure Record
to view and press the
ENTER
key to display snapshot data (shown above).
NOTE:
Each frame contains a snapshot from when
a DTC occurred.
3
Use the
EXIT
key to return to previous screens.
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