Buell 2003XB9S Service Manual page 356

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Code 13 Test (Part 1 of 3)
YES
STOP
Go to Code 13 Test
(Part 2 of 3).
Disconnect O2 sensor from harness. Connect DVOM to Pin 4 (+) and Pin 7 (-) of con-
nector [11] (gray).
Turn ignition ON and start engine. (Engine must be on and running to read O2 sensor
values). Observe O2 voltage. Is it approximately 0.5 volts?
Install Breakout Box (HD-42682) leaving
1
harness side connector [11] disconnected
from the Breakout Box. Is the O2 voltage
approximately 0.5 volts?
YES
Locate and repair
short to ground on
V/GY wire.
7656
Clear codes and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
NO.
0 volts.
1
NO
Replace ECM. See
4.29 ELECTRONIC
voltage and repair.
CONTROL MODULE.
7657
2003 Buell XB9S: Fuel System
NO.
Greater than
1 volt.
Install Breakout Box (HD-42682) leaving
harness side connector [11] disconnected
from the Breakout Box. Is the O2 voltage
approximately 0.5 volts?
YES NO
Inspect V/GY
Replace ECM. See
wire for shorts to
4.29 ELECTRONIC
CONTROL MODULE.
7658 7659
4-47