2002 Buell S3T: Fuel System 4-61
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TROUBLE CODE 16 4.21
GENERAL
Battery Voltage
A Code 16 will set if the ECM sees battery positive voltage
less than 6 volts or greater than 18 volts.
● A low voltage condition typically occurs during activation
of the starter or generally indicates loose wire connec-
tions.
● A high voltage condition is usually caused by a faulty
voltage regulator.
DIAGNOSTICS
Diagnostic Notes
The reference numbers below correlate with the circled num-
bers on the Code 16 flow charts.
1. The ECM is monitoring voltage at ECM connector [10]
(black) Terminal 1. Connect BREAKOUT BOX (Part No.
HD-42682) to ECM. See 4.7 BREAKOUT BOX.
2. This checks for voltage drops in the ECM power circuit. If
a significant voltage drop is not present, condition may
be caused by excessive starter current draw.
3. See 5.5 DIAGNOSTICS/TROUBLESHOOTING.
Scanalyzer Notes
The Scanalyzer icon appears at those points in the flow chart
where the Scanalyzer can be used.
Figure 4-47. Electrical Relays
Figure 4-48. Fuse Holder
6763
1 2
1. Ignition Relay
2. Starter Relay
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