300CE (124.052) L6-3.2L (104.992) (1993)
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Ignition Firing Chart
The engine control module (N3/4) controls three individual ignition coils. Each coil is connected to battery voltage and the engine control module
switches each coil to ground. The high-voltage output of each coil is sent simultaneously to two spark plugs, each assigned to a different cylinder.
When fired, one cylinder is in its power stroke and the other is in its exhaust stroke, i.e. 360 crank angle (CKA) apart. The cylinder which is in its
exhaust stroke has no combustible mixture, therefore the spark has no effect. One crankshaft rotation later, the cylinders reverse their roles.
The other two ignition coils operate in the same manner, however ignition firing is offset by 120 crank angle (CKA).
Ignition Coil
The ignition coils (T1/1, T1/2, T1/3) are connected, via the secondary output (4a), directly to a spark plug with a spark plug connector. The
secondary output (4b) travels over a ignition wire to the other cylinder assigned to that coil. The guide sleeve (W) also serves as the ground
connection for the ignition coil.
