Buell 2003XB9S Service Manual page 352

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Code 11 Test (Part 1 of 2)
YES
Check engine lamp con-
tinuously ON and CODE
11 only code set?
YES
Replace ECM. See
ELECTRONIC CONTROL
MODULE.
YES
To identify source of
intermittents, start at box
marked by Bold Aster-
isk on right side of flow
chart. Follow steps while
wiggling harness and
monitoring DVOM.
YES
Install original TP sensor
and replace ECM
ELECTRONIC CON-
TROL MODULE). Road
test again to verify.
Attach ECM to Breakout Box (HD-42682). Plug DVOM into Pin 2 (+)
1
and Pin 7 (-) of Breakout Box connector [11]. With ignition ON, gradu-
ally open throttle while observing voltage. Does voltage steadily
increase with no spikes or low voltages observed from 0.5-1.5 volts at
idle (closed throttle) to 3.9-4.9 volts at wide open throttle?
NO
4.29 Check for intermittents by per-
forming 4.7 WIGGLE TEST.
Intermittents present?
7591
NO
Replace TP sensor (4.36
THROTTLE POSITION
SENSOR). Clear codes
and road test. Did check
engine lamp come on
and set CODE 11?
NO
System
(4.29 now OK.
7590
7591
At some point in the flow chart you
may be instructed to jump directly
to a the box with the bold asterisk.
Disregard the asterisk (but not the
instruction box) if your normal pro-
gression through the chart brings
you to this location.
Clear codes and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
NO
Was voltage greater
than 4.9 volts?
*
NO
YES
Connect Breakout Box if not
already connected. Disconnect
TP sensor connector [88] and
ECM connector [11]. Measure
voltage at Pin 2 (+) and Pin 7 (-).
Does voltage measure 5.0 volts?
YES
Reconnect TP sensor
connector [88]. Measure
TP sensor voltage at
wide open throttle. Is
voltage greater than
5.0 volts?
YES
Locate and repair short
between R/W wire and
battery voltage.
7586
2003 Buell XB9S: Fuel System
STOP
Go to Code 11 Test
(Part 2 of 2).
NO
Locate and repair
short between V/Y wire
and battery voltage.
7575
NO
Locate and repair
short between V/Y
wire and R/W wire.
7585
4-43