Ignition System; Schematic And Routing Diagram; Ignition System Diagram - Suzuki 2005 GSF1200 Service Manual

1H-1 Ignition System:

Ignition System

Ignition System Diagram

The fully transistorized ignition system consists of the following components: a CKP sensor (which is made up of the
CKP sensor rotor and CKP sensor), ignitor, throttle position sensor, two ignition coils and four spark plugs. The ignition
timing is programmed and stored in the ignitor's ROM (Read Only Memory). The CKP sensor is mounted on the right
end of the crankshaft. The induced signal in the CKP sensor is sent to the wave-form arrangement circuit and the CPU
receives this signal and calculates the best ignition timing, 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 10 900 r/min, this circuit will cutoff the ignition primary current for the #1 and #4 spark plugs.
CAUTION
!
The engine is capable of running at over 10 900 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 10 900 r/min
without a load.
Y/W
CKP sensor

Schematic and Routing Diagram

Ignitor
B/Br
Bl Y
Throttle position sensor
Engine
stop switch
B/R
B
Ignition
coils
B649G11802001
Turn signal/
Side-stand relay
B/Bl
Fuse
(15 A)
Ignition
B/O
switch
Spark plugs
B/R
Main
fuse
(30 A)
Battery
I649G1180001-02