IGNITION COIL TESTS
Primary Winding Resistance Test
Connect ohmmeter between coil primary terminal and clean engine ground.
Ignition Coil Primary Resistance
0.090 ± .005 Ω @ 77°F (25°C)
IMPORTANT: A reading of less than 2 ohms is acceptable. Make sure meter is calibrated to read 1 ohm or less.
Secondary Winding Resistance Test
Connect ohmmeter between coil secondary terminal and coil primary terminal.
Ignition Coil Secondary Resistance
301 ± 14 Ω @ 77°F (25°C)
STATOR TESTS
The stator consists of 3 windings (6 poles each) on a 7 inch diameter core and generates an out put voltage of 55 VAC (1700 watts maximum). This voltage is converted by the EMM and used to provide 12 VDC for battery charging (10 A at 500 RPM and 50 A from 2000 RPM to WOT) and 55 VDC for fuel injector, fuel and oil pump operation. The ignition module of EMM is also powered by the 55 VDC output.
Stator Resistance Tests
Disconnect the battery cables at the battery. Use an ohmmeter to check resistance of stator windings.
STEP 1
Disconnect EMM J2 connector from EMM.
- EMM J2 Connector
Calibrate ohmmeter to appropriate scale and connect meter leads to the following pins:
Yellow/white and yellow (pins 17 and 7)
Brown/white and brown (pins 28 and 8)
Orange/white and orange (pins 18 and 10)
IMPORTANT: A reading of less than 2 ohms is acceptable. Make sure meter is calibrated to read 1 ohm or less.
| Stator Winding Resistance Specification |
|---|
| Yellow & Yellow/white .512 ± .020 Ω @ 73°F (23°C) |
| Brown & Brown/white .512 ± .020 Ω @ 73°F (23°C) |
| Orange & Orange/white .512 ± .020 Ω @ 73°F (23°C) |
STEP 2
To check for a grounded condition, connect one meter lead to ground wire and alternately connect the other meter lead to each stator wire. Meter should read no continuity. If meter reads continuity, replace stator due to grounded winding.
Stator Voltage Output Test
Use a voltmeter to check the stator output voltage. Set meter to read 110 VAC output.
To prevent accidental starting of outboard, disconnect crankshaft position sensor (CPS).
Disconnect CPS.
Disconnect stator (6-pin) connector from the engine harness (6-pin) connector.
Connect Stator Test Adaptor tool, P/N 5006211, to stator connector.
Connect meter leads to terminals of adaptor tool.
- Stator Test Adaptor
With a fully charged battery, crank outboard (100 RPM minimum) and observe meter reading.
| Stator Voltage Output (Measured between terminals 1 and 7 of toll) |
|---|
| 20 VAC at 100 RPM 30 VAC at 150 RPM 42 VAC at 200 RPM 52 VAC at 250 RPM 62 VAC at 300 RPM |
CHARGING SYSTEM TESTS
12 V Charging Circuit
To test the operation of the regulator in the EMM, you must be able to run the outboard continuously at approximately 5000 RPM, such as in a test tank or on a marine dynamometer.
The test consists of monitoring the system’s response to a partially discharged battery. Use a variable load tester to discharge the battery.
IMPORTANT: The regulator requires battery voltage on the red wire to operate.
Test Procedure
Disconnect the battery cables at the battery.
Use an inductive amp meter or connect a 0 to 50 A ammeter in series between the red wire(s) of engine wire harness (alternator output from EMM) and the positive (B+) battery cable terminal of starter solenoid.
IMPORTANT: This outboard has dual output charging. Each output is isolated and regulated. Each output is 25 A. Combined output is approximately 50 A. Refer to engine wiring diagram.
Fluke† model 334 or 336, Snap-On† model MT110 or EETA501, and various other amp meters should be available through local tool suppliers.
Reconnect the outboard’s battery cables.
