No Ecm Power - Buell 2002 S3T Service Manual

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NO ECM POWER

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
●
By retracting the side stand and grounding the relay
through the side stand switch. See
●
By disengaging the clutch and grounding the relay
through the clutch switch. See
If the ECM does not appear to be receiving power, check the
ground sources. A blown ignition fuse can also disable the
ECM.
DIA GNOSTICS
Diagnostic Notes
The reference numbers below correlate with the circled num-
bers on the Test 4.13 flow chart.
1. Connect BREAKOUT BOX (Part No. HD-42682) to ECM.
See 4.7 BREAKOUT BOX.
6753
Figure 4-27. Neutral Switch
Figure 4-27.
Figure 4-28.
Figure 4-29.
Neutral Switch behind
Transmission Sprocket
8305
Figure 4-28. Side Stand Switch
6938
1
1. Connector [95]
2. Clutch Switch
Figure 4-29. Clutch Switch
2002 Buell S3T: Fuel System
4.13
Sidestand
Switch
Plunger
2
4-31