Suzuki GSX1200 1999, Руководство по обслуживанию

Страница: 220 / 274

6-26 ELECTRICAL SYSTEM
IGNITION SYSTEM (DIGITAL IGNITOR)
DESCRIPTION
The fully transistorized ignition system consists of the following components: a signal generator (which is
made up of the signal generator rotor and pickup coil), ignitor (including a 8-bit microcomputer and a 10 MHz
ceramic vibrator), throttle position sensor, two ignition coils and four spark plugs. The ignition timing is pro-
grammed and stored in the ignitor’s ROM (Read Only Memory).
The signal generator is mounted on the right end of the crankshaft. The induced signal in the signal generator
is sent to the wave-from arrangement circuit and the CPU receives this signal and calculates the best ignition
timing from the signal of the ceramic vibrator, throttle position sensed by throttle position sensor and data
stored in the ROM. The CPU outputs the signal to the transistor of the ignition coil output circuit which is
connected to the primary windings of the ignition coils which is turned “off” and “on” accordingly. Thus, it
induces the secondary current in the ignition coil’s secondary windings and produces the spark between the
spark plug gaps.
The ignition cutoff circuit is incorporated in the ignitor to prevent the engine from overreving. If the engine
speed reaches 11 000 r/min, this circuit will cutoff the ignition primary current for all of the spark plugs.
&
The engine is capable of running at over 10 350 r/min without a load, even if the ignition cutoff
circuit is in effect; however, this may cause engine damage. Therefore, never run the engine over
10 350 r/min without a load.
WIRE COLOR
G : Green
B : Black
O : Orange
R : Red
Dg: Dark green
B/Y : Black with Yellow tracer
O/Y : Orange with Yellow tracer
O/B : Orange with Black tracer
B/R : Black with Red tracer
B/W : Black with White tracer B/Lg : Black with Light green tracer
B/Bl : Black with Blue tracer
B/O : Black with Orange tracer
Dbr : Dark brown
O/W : Orange with White tracer