Mercury MERCRUISER - Ignition Coil Resistance Test; Removal

Removal
1. Disconnect the wire harness connectors at the ignition coil.
Coils
a - Ignition coil
b - Screws
c - Wiring harness connector
2. Remove the high‑tension coil lead.
3. Remove the coil mounting screws.
4. Remove the ignition coil.
Ignition Coil Resistance Test
1. Remove the spark plug lead from the ignition coil. Twist the ignition coil boot slightly while removing.
2. Use a DMT 2004 digital multimeter and perform the following test.
a - Pin A
b - Pin B
c - Coil towers
Ignition Coil Resistance Test (Ω)
Between coil towers 7200–8800
Between pin A and B 0.3–0.5
DMT 2004 Digital Multimeter 91‑892647A01
a
b
b
c
59409
42625
a
b
c
Waste Spark System
Page 4B-6 © 2016 Mercury Marine 90-8M0099748 eng DECEMBER 2015