Buell 2006LIGHTNING MODELS, Service Manual, Page: 413 / 638

2006 Buell Lightning: Fuel System 4-71
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TROUBLE CODES 24 AND 25 4.23
GENERAL
Front Ignition Coil (Code 24)
And Rear Ignition Coil (Code 25)
A Code 24 or 25 will set if the ignition coil rise time is out of
range. This could occur if there is an open coil or loss of
power to the coil. If both codes are set, it is likely a coil power
failure or a coil failure.
See Figure 4-50. The coil receives power from the ignition
relay at coil pin B (3) at the same time that the fuel pump and
injectors are activated.
DIAGNOSTICS
Diagnostic Notes
The reference numbers below correlate with the circled num-
bers on the Code 24/25 flow charts.
1. Use HARNESS CONNECTOR TEST KIT (Part No. HD-
41404), purple pin probes and patch cord.
2. Connect BREAKOUT BOX (Part No. HD-42682) to ECM.
See
4.6 BREAKOUT BOX .
3. See Figure 4-36. Plug IGNITION COIL CIRCUIT TEST
ADAPTER (Part No. HD-44687) and FUEL INJECTOR
TEST LAMP (Part NO. 34730-2C) INTO Breakout Box.
Note that cranking the engine with test lamp in place of
the ignition coil can sometimes cause a code 24 or 25.
This condition is normal and does not by itself indicate a
malfunction. Codes must be cleared if this condition
occurs.
Figure 4-50. Ignition Coil
Figure 4-51. Testing Ignition Coil Connectors
1. Front cylinder post
2. Coil Pin A (rear cylinder)
3. Coil Pin B (12 VDC)
4. Coil Pin C (front cylinder)
5. Rear cylinder post
1
2 3 4
5
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