2007 Buell Lightning: Fuel System 4-59
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Code 15 Test (Part 2 of 2)
YES
Continued from Code 15 Test (Part 1 of 2)
Disconnect IAT sensor connector [89]. Measure
resistance between Pins 1 and 2 of [89] at sensor.
With engine at room temperature 60-90° F (15.6-32.2° C),
is resistance between 6816-3314 ohms?
Using a DVOM, measure the resistance
between IAT sensor connector [89] terminal
1 and ECM Pin 10 on Breakout Box.
Is it less than 1.0 ohm?
NO
Replace IAT sensor. See 4.36
INTAKE AIR TEMPERATURE
SENSOR.
YES
Using a DVOM, measure the resistance
between IAT sensor connector [89] terminal
2 and ECM Pin 7 on Breakout Box.
Is it less than 1.0 ohm?
NO
Examine Lt. GN/Y
wire in harness for
open circuit and
repair.
YES
3
Using a DVOM, measure the resistance
between ECM Pins 10 and 7 of connector
[11] on Breakout Box.
Is it greater than 1.0 megaohm?
NO
Examine BK/W wire
in harness for open
circuit and repair.
YES
Using a DVOM, measure the resistance
between ECM Pin 10 of connector [11] on
Breakout Box and ground.
Is it greater than 1.0 megaohm?
NO
Examine Lt. GN/Y wire and
BK/W wire in harness for short
between these two circuits and
repair.
YES NO
Examine harness
for short to ground
and repair.
To locate sources of intermittents, wiggle
harness while performing steps marked
above by Bold Asterisk.
Repair as necessary.
3
At some point in the flow chart you
may be instructed to jump directly to
the box marked by an asterisk. Disre-
gard the asterisk (but not the instruc-
tion box) if your normal progression
through the chart brings you to this
location.
2
Clear codes and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
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