Mazda RX-8 2004 - Ignition System; Ignition Coil Construction;Operation; Construction; Operation

IGNITION SYSTEM
01–18–2
IGNITION COIL CONSTRUCTION/OPERATION
CHU011801008S03
Construction
• Distributorless ignition coils have been adopted, and two ignition coils are installed each on both the trailing
and leading sides. By adopting the distributorless ignition coil, the distributor has been eliminated in order to
simplify the parts of the ignition system, and also to prevent voltage reduction occurring between the parts
improving firing efficiency.
• Independent firing control has been adopted to eliminate firing without spark, increasing firing energy.
Operation
• The firing timing of the coil is controlled by the PCM by means of a built-in igniter for optimum ignition timing
control.
Terminal layout
End Of Sie
Terminal Signal
3 terminals
A Ignition coil control signal
B Ground
C Ignition coil power supply
TO SPARK PLUG
IGNITON COIL
FRONT VIEW
IGNITION COIL INTERNAL CIRCUIT
IGNITION COIL
SIDE VIEW
IGNITION COIL
ELECTRICAL SYSTEM WIRING DIAGRAM
PCM
IG SW
BATTERY
C
A
B
C
A
B
SECONDARY
TERMINAL
A
B
C
T/F
T/R
L/F
L/R
IG CONDENSER
2AD2AC
A
A
B
C
A
B
C
A
B
C
2AA2Z
CHU0118S004