Checking The Ignition Coils; Checking The Pick-Up - APRILIA SL Mille Workshop Manual

SL mille
6.4.4 CHECKING THE IGNITION COILS
• Remove the rear fairing, see 7.1.33 (REMOVING THE
REAR FAIRING).
• Lift the fuel tank, see 2.8 (LIFTING THE FUEL TANK).
NOTE
The following procedure refers to a single coil,
though it is applicable to both.
• Disconnect the terminals (1-2) from the ignition coil (3).
Upon reassembly, make sure that the electric termi-
nals (1-2) are properly connected.
• Slip off the spark plug cap (4) (belonging to the coil of
interest) and disconnect it from the cable.
• Measure the values of (A) and (B) indicated in the fig-
ure by means of a pocket tester.
It is important to check the continuity of the primary and
secondary windings.
The reading in Ohms does not necessarily have to be ex-
act but if the windings are sound, the resistance values
must correspond approximately to those indicated.
Standard values:
measurement (A): 2.8 - 5.2 Q;
measurement (B): 9.1 - 16.5 kQ.
This measuring method is approximate; if possible,
check the correct operation of the coil by replacing it
with another one in perfect condition.
• Repeat the procedure for the other coils.
6.4.5 CHECKING THE PICK-UP
With the engine switched off:
• Lift the fuel tank, see 2.8 (LIFTING THE FUEL TANK).
• Release the wiring from the special clamp (5).
• Release the five-way connector (6) (white) from the
frame structure, moving it downwards.
• Disconnect the two-way connector (6) and take the
measurements (on the engine-side terminals).
Upon reassembly, make sure that the electric con-
nector (6) is correctly coupled.
• Using a pocket tester (scale x 100 Q), measure the re-
sistance between the terminals of the blue/yellow (B/G)
and white/yellow (Bi/G) cables.
Standard value: 150 - 350 Q.
If the resistance is infinite (00) or lower than the pre-
scribed level, the sensor must be changed.
ELECTRIC SYSTEM
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