Ignition Coil Ohms Test - Mercury 150 EFI Service Manual

Ignition Coil Ohms Test

Secondary
Tower
EST
PIN A
EST Low
RED
PIN B
METER
LEAD LEAD
Secondary
Low
Pin C
Primary
Ground
Pin D
Battery +
Pin E
EST = Electronic Spark Trigger
EST Low = Return ground path for the trigger signal to the ECM
90-883728 JULY 2001
BLACK METER LEAD
Secondary EST
Tower PIN A
X No
Continuity
No X
Continuity
No 8500 –
Continuity 12000
ohm
850 – 1200 No
ohm Continuity
No 20000 –
Continuity 30000
ohm
No 11000 –
Continuity 21000
ohm
EST Low Secondary
PIN B Low
Pin C
No 850 – 1200
Continuity ohm
8500 – No
12000 Continuity
ohm
X No
Continuity
No X
Continuity
31000 – No
41000 Continuity
ohm
21000 – No
31000 Continuity
ohm
IGNITION
58903
Primary Battery +
Ground Pin E
Pin D
No No
Continuity Continuity
29000 – 11000 –
39000 21000
ohm ohm
39000 – 21000 –
49000 31000
ohm ohm
No No
Continuity Continuity
X 13000 –
23000
ohm
13000 – X
23000
ohm
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