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Test 4.12 (Part 2 of 3)
Disconnect fuel injector connector and
3
attach Fuel Injector Test Lamp (HD-34730-
2C). Crank engine. Does lamp flash?
YES
Check engine
compression. See
3.2
ENGINE.
7210
Faulty coil connection, spark plug wires
or coil. Proceed as follows:
• Check coil connection.
• Test spark plug cable resistance. See
MISFIRE.
• Check coil by substituting one known to be
good.
Check coil resistance. See
COIL.
4-30
Continued from
Check spark plug condition. Replace if fouled. Check
2
spark at both plugs while cranking. Spark present?
YES
NO
Correct problems
found under
4.22
TROUBLE CODES
23 AND
32.
7205
YES
4.16
OR
4.31 IGNITION
7220
Disconnect cam position sensor connector
7
[14]. With ignition ON, measure voltage
between Terminal A (+) and Terminal C (-)
of connector [14B]. Is 5 volts present?
YES
STOP
Go to
Test 4.12
(Part 3 of 3).
Test 4.12 (Part 1 of
3).
Check for battery voltage at Terminal B of
4
coil connector [83] using DVOM. Power
YES
Disconnect coil connector [83]. Gently con-
nect test lamp to connector [83] Terminal A
(front cylinder) or Terminal C (rear cylinder).
Crank engine. Does light flash?
Connect Breakout Box. Check continuity
5
between ignition coil Terminal A of connec-
tor [83] and Breakout Box (BK) Pin 7.
Measure resistance between ignition coil
6
Terminal C and ECM Pin 6 [10B].
Resistance should be less than 1.0 ohm.
YES
NO
With ignition OFF, measure resistance between
connector [14] Terminal A and Breakout Box (GY)
Pin 1. Also between connector [14] Terminal C
(BK/W wire) and ECM Pin 8 on connector [11B]. Is
resistance greater than 1.0 ohm?
YES
Repair open
circuit.
7240
NO
present after key ON?
NO
Open in GY wire
between splice for
fuel pump wire and
ignition coil. Repair
open.
NO
Is it?
NO
Poor connection at connector [10B], [83] or
open in harness between coil and
ECM. Repair open.
Check for continuity between Ter-
minal A connector [14B] and
NO
ground. Continuity present?
YES
Repair short
Replace ECM. See
to ground.
4.29 ELECTRONIC
CONTROL
7241
2002 Buell X1: Fuel System
7215
7225
NO
MODULE.
7250
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