4-76 2005 Buell Firebolt: Fuel System
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Code 33 Test
YES
With DVOM still connected, check for inter-
mittents by performing 4.7 WIGGLE TEST
while repeating first test of this flow chart.
Intermittents present?
Attach Breakout Box (HD-42682) to ECM. With DVOM,
measure voltage between Pin 3 of [10] and ground
after ignition switch is turned ON. Meter should read
less than 2 volts and pump should run
for 2-3 seconds. Does it?
YES NO
Repair as
necessary.
Replace fuel pump. See 4.39
FUEL PUMP/EARLY MODEL
YEAR. Clear codes and road test.
Did check engine lamp come on
YES NO
Install original
fuel pump (4.39 FUEL
PUMP/EARLY MODEL
YEAR) and replace ECM
(4.30 ELECTRONIC
CONTROL MODULE).
System
OK.
Fuel pump
on continuously?
NO
Check continuity of BN/Y wire
between [10] Pin 3 and Pin C of
[86]. Continuity present?
YES
Repair
open.
NO
Check continuity of GY
wire from ignition relay
Terminal 87 to Pin D of
[86]. Continuity present?
YES
Repair
open.
NO
NO
1
2
3
3
Clear codes and confirm proper operation with no
check engine lamp. Codes can be cleared using
DIGITAL TECHNICIAN (Part No. HD-44750).
Disconnect ECM.
Does fuel pump run
continuously?
YES
NO
Locate and repair
short to ground on
BN/Y wire.
Replace ECM. See
4.30 ELECTRONIC
CONTROL MODULE.
YES
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