Electrical
Section
2A - Ignition
Table of Contents
Ignition Specifications at 20 °C (68 °F).............................. 2A-2
Ignition Theory of Operation .............................................
2A-3
General Troubleshooting................................................... 2A-3
Engine Control Module (ECM)........................................... 2A-3
ECM Systems Control Matrix......................................2A-4
Troubleshooting.......................................................... 2A-4
Removal......................................................................2A-4
Installation...................................................................2A-4
Wire Color Code Abbreviations..........................................2A-5
Sensors..............................................................................2A-5
Crankshaft Position Sensor........................................ 2A-5
Engine Coolant Temperature (ECT) Sensor...............2A-7
Oil Pressure Switch.................................................... 2A-9
Temperature and Manifold Absolute Pressure
(TMAP) Sensor..................................................... 2A-10
Throttle Position Sensor (TPS)................................. 2A-12
Ignition Components........................................................ 2A-13
Flywheel....................................................................2A-13
Stator........................................................................ 2A-14
Timing Belt................................................................2A-16
Ignition Coil............................................................... 2A-17
Ignition
90-8M0125265 eng NOVEMBER 2017 © 2018 Mercury Marine Page 2A-1
2
A
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