IGNITION
Page 2A-14 90-857046R1 NOVEMBER 2001
Multimeter Ohm Checks
Tested Part Multimeter Wires Connected To: Meter Scale Meter Reading
Stator Charge Coil
Red
Black
Green/White (2)
White/Green (1)
R x 1 Ω 660 - 710
Power Bobbin
Charge Coil
Red
Black
Yel/Blk
Yel/Blk
R x 1 Ω 6.7-7.1
Stator Battery Charge
Coil (6 Amp.)
Red
Black
Yel
Yel
R x 1 Ω 0.9-1.1
Stator Battery Charge
Coil (15 Amp.)
Red
Black
Yel
Yel
R x 1 Ω 0.22-0.24
Crank Position Sensor
Red
Black
Red (1)
White (2)
R x 1 Ω 300 - 350
Ignition Coil Primary
(with wires
disconnected)
Red
Black
Black/White
Black (B)
R x 1 Ω 0.18 - 0.24
Ignition Coil
Secondary
(test with coil leads
disconnected)
Red
Black
High Tension Lead
Black (B)
R x 1k Ω 2.72 - 3.68
NOTE: Copper is an excellent conductor, however, resistance may notably vary between
low and high temperature. Therefore, reasonable differences can be accepted between
resistance readings and specifications.
The above readings are for a cold (room temperature) engine. Resistance will increase if
the engine is warm.
Ignition Diagnostic Procedures
TROUBLESHOOTING TIP: With engine running, use inductive timing light to check spark
advance of each cylinder as throttle is opened and closed. If timing advances and retards
on each cylinder, ignition system is MOST LIKELY functioning properly.
IMPORTANT: If outboard appears to have an ignition system failure, it is recom-
mended that before beginning in-depth troubleshooting:
a. Ensure that the engine is mechanically sound condition. (Fuel System, Cylinder
Compression etc.).
b. Check all engine ground leads for loose or corroded connections.
c. Disconnect and reconnect ignition harness connectors to verify proper continuity.
SUGGESTED TESTING PROCEDURES
NOTE: The following recommended tests and probable causes are not listed in any specific
order. The technician should use this table as a guide to help isolate and test the specific
problem/condition. Always perform the DVA tests first (if applicable), then perform resis-
tance test to validate suspected component failure.
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