TROUBLESHOOTING AND ELECTRICAL SYSTEM:
KEY-START WITH NEUTRAL REV GAS VEHICLE
Test Procedures
11
2m
20
m
200
m
2k
200
200
200
200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK
5XL
V
V
V
A
!
!
COM
200nA
MAX
1000 ---
750V
FUSED
2m
20
m
200
m
2k
200
200
200
200
20
2
200
m
500
20k
200k
2000
k
1000
OFF
WAVETEK
5XL
V
V
V
A
!
!
COM
200nA
MAX
1000 ---
750V
FUSED
NO COM
NO COM
NC
NC
1
2
4
3
1. Lever Up 2. Lever Depressed 3. Tester light is OFF. Meter reads 1. 4. Tester light is ON. Meter reads approx. zero ohms.
460
Figure 11-13
Neutral Lockout Limit Switch Test
5.
Connect battery and spark plug wire(s).
See Connecting the Battery – Gasoline Vehicles, Section 1, Page 1-3.
TEST PROCEDURE 8 – Starter/Generator (Starter Function)
See General Warning on page 1-1.
1.
Turn the key switch OFF and remove the key. Place the Forward/Reverse handle in the NEUTRAL position.
Chock the wheels.
2.
Disconnect battery and spark plug wire(s).
See Disconnecting the Battery – Gasoline Vehicles, Section
3.
Check that wires are connected correctly and are tight. If they are not, rewire or tighten as necessary.
4.
Disconnect the wires from all the terminals on the starter/generator. Then place the black (–) probe of a
multimeter, set to ohms, on the starter/generator housing (scratch through the finish to ensure a good ground).
While holding the black probe against the housing, place the red (+) probe (one at a time) on the A1, A2, F1, F2
and DF terminals respectively
. The readings should be no continuity. If the readings
are incorrect, the starter/generator will need to be removed from the vehicle and disassembled by a qualified
technician.
See Starter/Generator Removal, Section 13, Page 13-1.
– An incorrect reading from the A1 or A2 terminal indicates three possible problems: 1) a grounded A1 or A2
terminal, 2) a grounded wire in the brush area, or 3) a grounded armature/commutator.
– If the F1 or F2 reading is incorrect, it indicates a possible grounded F1 or F2 terminal or a grounded field coil.
– If the DF reading is incorrect, it indicates a possible grounded DF terminal or a grounded field coil.
5.
Disconnect the ground wire from the A2 terminal and the green wire from the A1 terminal on starter/generator.
6.
Using a multimeter set to 200 ohms, place the red (+) probe on the A1 terminal and the black (–) probe on the A2
terminal. The reading should be continuity. If the reading is incorrect, a possible open or poor contact in a brush
assembly and/or open armature windings may be the cause. The starter/generator will need to be removed from
the vehicle and disassembled by a qualified technician.
See Starter/Generator Removal, Section 13, Page 13-1.
7.
With the wires still disconnected, using a multimeter set on 200 ohms, place the red (+) probe on the F1 terminal
and the black (–) probe on the F2 terminal. The reading should be between approximately 0.1 and 0.3 ohms. If
the reading is incorrect, a possible open field coil or bad connections at terminals may be the cause. The
starter/generator will need to be removed from the vehicle and disassembled by a qualified technician.
Starter/Generator Removal, Section 13, Page 13-1.
8.
With the wires still disconnected, using a multimeter set to 200 ohms, place the red (+) probe on the DF terminal
and the black (–) probe on the F1 terminal. The reading should be between 4.5 and 5.5 ohms. If the reading is
incorrect, a possible grounded DF terminal and/or grounded field coil may be the cause. The starter/generator
2007-2009 Turf 252, Carryall 252 and XRT 900 Maintenance and Service Manual
Page 11-17
