Battery Voltage - Buell 2003XB9S Service Manual

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TROUBLE CODE 16
GENERAL

Battery Voltage

A Code 16 will set if the ECM detects battery positive voltage
less than 6 volts or greater than 20 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
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.
8892a
1. Fuse block
2. Key switch relay
4-58 2003 Buell XB9S: Fuel System
4.6 BREAKOUT BOX.
1
Figure 4-44. Fuse Block and Electrical Relays
b1003a4x
Diode 1
Diode 2
30
Battery
7.5
ECM
15
Lights
15
Key Switch
Figure 4-43. Fuses and Diodes
2
3
4
3. Ignition relay
4. Start relay
4.20
15
Ignition
7.5
Accessory
15
Brake/Horn
7.5
Cooling Fan
15
Spare
7.5
Spare