4-50 2002 Buell S3T: Fuel System
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Code 13 Test (Part 1 of 3)
Install Breakout Box (HD-42682) leaving
harness side connector [11] disconnected
from the Breakout Box. Is the O2 voltage
approximately 0.5 volts?
NO.
0 volts.
NO.
Greater than
1 volt.
YES
YES NO
Locate and repair
short to ground on
V/GY wire.
Replace ECM. See
4.29 ELECTRONIC
CONTROL MODULE.
Disconnect O2 sensor from harness. Connect DVOM to
Pin 4 (+) and Pin 8 (-) of connector [11] (gray) or use Scanalyzer.
Turn ignition ON and start engine. (Engine must be on and running for
Scanalyzer to read O2 sensor values). Observe O2 voltage.
Is it approximately 0.5 volts?
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
wire for shorts to
voltage and repair.
Replace ECM. See
4.29 ELECTRONIC
CONTROL MODULE.
Go to Code 13 Test
(Part 2 of 3).
STOP
7656
7657
76597658
11
Clear codes and confirm proper
operation with no check engine
lamp.
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