B
FUEL SYSTEM
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
95
Repair and Service Manual
699322
sometimes stops moving at certain points. This is
normal.
5.
An empty plot will appear. To show data traces, right-
click in the tan plot area and select a channel from
the “Available Data” flyout menu. Repeat until all
desired channels are selected.
6.
Additional plots can be added to display channels
separately. Use the “Add Plot” button in the top-left
corner to create a new empty plot.
7.
To change the vertical axis range, right-click and
select an option from the “Scale Behavior” flyout
menu. “Manual” allows exact min and max values to
be entered.
Fig. 11 Data Review
8.
The scroll wheel allows zooming in and out of the
plot. The area to be focused on is determined by the
cursor position (hover over the area of interest while
scrolling).
9.
The Engine History button shows the Stored Faults
as they would have appeared when the log was
taken.
10. The ECM version when the log was taken is shown
in the top-right.
11. The time scale is shown at the top in hh:mm:ss for-
mat. A more precise value is shown next to the cur-
sor as it moves across the plot. Hint: calculating a
time difference is best accomplished by referring to
the Key-on Time variable instead of the time of day.
12. Green and red squares may appear on the time
scale at the top, as seen in Figure 7. These are diag-
nostic indicators. Hovering the cursor over each
square reveals the event information and precise
time stamp. Examples: “Safeties Active” (indicating
pedal up/grounded kill line), “Temp Sensor Discon-
nected”, “Limp Home Mode”. The “Safeties Active”
fault is typically not an indication of an issue. It only
signifies that the accelerator pedal has been
released, which signals to the ECM to stop injecting
fuel.
13. Multiple log files can be opened simultaneously by
using File->Open again. The different logs will
occupy individual tabs, shown at the bottom of the
screen.
Update ECM
Before starting the update proce-
dure:
Make sure the laptop is plugged into a charger.
Ensure the USB cable is routed in so that there is no
risk of it coming unplugged.
Ensure the computer does not go to sleep/hibernate
or shut down during the update.
Any of the scenarios in the warning above has a chance
to corrupt the ECU, requiring removal and replacement of
the entire throttle body assembly.
1.
Select “Load Engine Config” from the File menu.
Fig. 12 IRIS Tool File Menu
2.
Navigate to the location of the downloaded map
update. Select and open the appropriate map.
Fig. 13 ECM Selection Window
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