12.21
ELECTRICAL
12
TEST 1: Resistance Value of Each Stator Leg
1. Measure the resistance value of each of the three stator
legs.
NOTE: If there are any significant variations in ohm
readings between the three legs, one of the three
stator legs may be weak or failed.
TEST 2: Resistance Value of Each Stator Leg to Ground
1. Measure the resistance value of each of the stator legs to
ground.
NOTE: Any measurement other than Infinity (open)
will indicate a failed or shorted stator leg.
TEST 3: Measure AC Voltage Output of Each Stator Leg at
Charging RPM
1. Set your multimeter meter to measure AC Voltage.
2. Disconnect the 3-wire stator connector near the voltage
rectifier/regulator.
3. Start the engine and let it idle.
4. While holding the engine at a specified RPM, separately
measure the voltage across each ‘leg’ of the stator by
connecting the meter leads to the wires leading from the
stator (Y1 to Y2, Y1 to Y3, Y2 to Y3).
5. Refer to the following table for approximate AC Voltage
readings according to RPM. Test each leg at the specified
RPM in the table.
NOTE: If one or more of the stator leg output AC
voltage varies significantly from the specified value,
the stator may need to be replaced.
Stator / Alternator Removal
1. Remove the fuel tank (see Chapter 3).
2. Remove the (4) screws retaining the engine skid plate and
remove the plate from the vehicle.
3. Place a drain pan under the front portion of the engine.
4. Remove the coolant hose from the water pump housing.
5. Slowly drain the coolant into the drain pan. Dispose of used
coolant properly.
6. Disconnect the stator and CPS wire harnesses.
Test
Connect Meter
Leads To:
Ohms Reading
Charge Coil Y1 to Y2 (Pin B to C) 0.19Ω ± 15%
Charge Coil Y1 to Y3 (Pin A to C) 0.19Ω ± 15%
Charge Coil Y2 to Y3 (Pin A to B) 0.19Ω ± 15%
Test
Connect Meter
Leads To:
Ohms Reading
Battery Charge
Coil
Y1, Y2, or Y3
to Ground
Open Line
(Infinity)
RPM Reading AC Voltage Reading
6000
115 Vac ± 10 % (Nominal)
171 Vac ± 10 % (Peak)
Coolant
Inlet Hose
Drain
HERE
Stator
CPS
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