Buell 2003XB9S, Service Manual, Page: 339 / 588

4-30 2003 Buell XB9S: Fuel System
HOME
No ECM Power
CONDITION: Sidestand up, key ON and transmission in neutral
Check for 12 volts
on ignition relay
Terminal 87 (GY).
Voltage present?
YES
Repair open between
ECM and ignition relay.
YES
YES
YES
Check for continuity to
ground on ignition relay
Terminal 85 (TN/W).
Continuity present?
NO
Diagnose ignition interlock
circuit. See 7.5 STARTER
INTERLOCK and continue
until problem is solved.
NO
Check for continuity to
ground on [10] Pin 2.
Continuity present?
Repair open.
Repair open on
(GY/O) wire
between ignition
relay and fuse.
Check for 12 volts
on ignition relay
Terminal 30 (GY/O).
Voltage present?
Replace ignition relay.
See 7.5 STARTER
INTERLOCK .
Check for 12 volts
on ignition relay
Terminal 86 (W/BK).
Voltage present?
Repair open on GY/O
wire between connector
[22] and ignition relay.
NO
Check ignition fuse and ECM fuse.
Are fuses OK?
YES
Replace ECM. See
4.29 ELECTRONIC
CONTROL MODULE .
YES
Attach Breakout Box (HD-42682) to
ECM. Check for 12 volts on ECM
connector [10] Pin 1 (+) and Pin 2 (-).
Voltage present?
Replace fuse(s)
as needed.
YES
Check for 12 volts
on right handlebar con-
nector [22A] GY/O wire.
Voltage present?
NO
NO
NO
NO
NO
YES
7271
7114
7272
7273
7274
7276
7277
7278
1
STOP
Check for 12 volts
on right handlebar con-
nector [22A] W/BK wire.
Voltage present?
YES
Repair open on W/BK
wire between connector
[22] and ignition relay.
7277
Replace handlebar
switch assembly.
NO