Buell 2002 X1, Service Manual

Page: 265 / 462

2002 Buell X1: Fuel System 4-47
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Code 11 Test (Part 1 of 2)
Connect Scanalyzer (HD-41325) if available or attach ECM to Break-
out Box (HD-42682). Plug DVOM into Pin 2 (+) and Pin 7 (-) of Brea-
kout Box connector [11]. With ignition ON, gradually 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?
Was voltage greater
than 4.9 volts
NO YES
Check engine lamp con-
tinuously ON and CODE
11 only code set?
YES
Replace ECM. See 4.29
ELECTRONIC CONTROL
MODULE .
NO
Check for intermittents by per-
forming 4.8 WIGGLE TEST .
Intermittents present?
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.
NO
Replace TP sensor
( 4.36 THROTTLE POSI-
TION SENSOR
). Clear
codes if Scanalyzer is
available and road test.
did check engine
lamp come on and
set CODE 11?
NO
System
now OK.
YES
Install original TP sensor
and replace ECM ( 4.29
ELECTRONIC CON-
TROL MODULE ). Road
test again to verify.
*
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
NO
Go to Code 11 Test
(Part 2 of 2) .
STOP
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.
7555
7560
7565
7570
1
NO
Locate and repair
short between V/Y wire
and battery voltage.
NO
Locate and repair
short between V/Y
wire and R/W wire.
7586
7585
7575
Clear codes and confirm proper
operation with no check engine
lamp.