4-28
2003 Buell XB9R: Fuel System
HOME
NO ECM POWER
4.12
GENERAL
A relay controlled by the engine stop switch supplies power to
the ECM. The relay requires a ground to operate. If the
ground is not established, the ECM will not receive power.
Grounds may be established three ways.
●
By placing the motorcycle in neutral and grounding the
relay through the neutral switch. See
Figure 4-133.
●
By retracting the sidestand and grounding the relay
through the sidestand switch. See
Figure 4-134.
●
By disengaging the clutch and grounding the relay
through the clutch switch. See
Figure 4-135.
If the ECM does not appear to be receiving power, check the
ground sources. A blown ignition fuse can also disable the
ECM.
DIAGNOSTICS
Diagnostic Notes
The reference numbers below correlate with the circled num-
bers on the Test 4.12 flow chart.
1.
Connect BREAKOUT BOX (Part No. HD-42682) to ECM.
See
4.6 BREAKOUT BOX
.
Figure 4-133. Neutral Switch
8748a
1.
Transmission sprocket
2.
Neutral switch
2
1
Figure 4-134. Sidestand Switch
Figure 4-135. Clutch Switch (viewed from underneath fair-
ing)
8403a
8437
Summary of Contents for XB9R 2003
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