Buell 2008 XB SERIES Electrical Diagnostics Manual page 118

Oxygen Sensor: DTC P0151 (13); DTC P0152 (13); DTC P0154 (13) (Part 1 of 2)
YES
STOP
Go to Oxygen Sensor Test
DTC P0151 (13); P0152 (13);
P0154 (13) (Part 2 of 2).
NOTES:
Clear DTCs and confirm proper
operation with no check engine lamp.
Codes can be cleared using DIGITAL
TECHNICIAN (Part No. HD-44750).
After replacing ECM or TPS, the TPS
zero set procedure must be performed.
Refer to THROTTLE POSITION
SENSOR in the appropriate Buell
Service Manual.
2-68 2008 Buell XB Diagnostics: Engine Management
Disconnect Oxygen (O ) Sensor from harness. Connect DVOM
2
(Part No. HD39978) to Breakout Box [11] (Gray) terminal "32" (+)
1 and ground (-).
Turn Ignition Switch ON. Observe circuit voltage.
Is it approximately 5 volts?
NO.
0 volts.
Install Breakout Box (B-48115)
leaving harness side connector
[11] (Gray) disconnected from
the Breakout Box. Measure
continuity to ground on terminal
"32" of connector [11] (Gray) on
breakout box.
Is continuity present?
YES
Locate and
repair short to
ground on (V/
GY) wire.
Greater than
Install Breakout Box (B-48115)
leaving harness side connector
[11] (Gray) disconnected from the
Breakout Box. Measure voltage to
ground on terminal 32 of
connector [11] (Gray) on breakout
Is voltage present?
NO YES
Inspect (V/GY)
wire for shorts
Replace ECM.
to voltage and
repair.
NO.
1 volt.
box.
NO
Replace ECM.
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