Evinrude E-tec 2011 Series, Product Service Update

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Inductive Ignition System
The inductive (IDI) ignition system provides ignition spark with a fast rise time
and a long, continuous duration spark, compared to the multi-strike cd ignition
used on older models. The benefit is a smoother running engine under a variety
of load conditions.
The inductive ignition uses an ignition coil which contains an internal circuit
board to control current flow through the primary winding.
How it works: System voltage (55 volts) is supplied through the white/red wire
to the primary winding. Ground is provided through the black wire to the circuit
board and to the coil primary. The
EMM provides a low voltage control signal
through orange wire to the circuit board.
When the circuit board receives the control signal, it momentarily stops current
flow through the coil primary winding. The surrounding magnetic field collapses,
creating high voltage in the coil secondary winding.
IDI Ignition Coil Tests: Because the ignition coil contains an internal circuit
board, there are no simple ignition coil tests available.
Before replacing an ignition coil, be sure:
• 55 V is supplied to the white/red wire of the ignition coil connector.
•
A control signal is present on the orange wire of the ignition coil connector.
Refer to
Ignition Control Circuit Tests in the appropriate service manual.
•
The black wire of the ignition coil connector provides continuity to ground.
•
The secondary spark plug lead provides continuity.
Refer to Ignition Output Tests in the appropriate service manual for other igni-
tion system test procedures.
CDI Multi - Strike Ignition
1. Fast rise time
2. Short spark duration
3. No spark in gap
Evinrude E-TEC IDI
1. Fast rise time
2. Long spark duration
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