Cranking & Fuel Shutoff Solenoid Circuit Diagnosis - Sabre 1338 Gear Technical Manual

DIAGNOSTICS
CRANKING & FUEL SHUTOFF SOLENOID CIRCUIT DIAGNOSIS
Test Conditions:
• Ignition switch in OFF position
Test/Check Point
1. Battery positive terminal
2. Starter solenoid front cable terminal
3. Plug in fuse under operator's seat
4. Ignition switch terminal red wire
Test Conditions:
NOTE: Perform the tests below one at a time, allowing the starter to cool between tests. Do not allow the starter
to crank for more that 15 seconds, and allow 30 seconds for starter windings to cool. If starter mechanism
is not turning, windings may still be conducting current and heating up. Disconnect starter cable from
starter (and isolate cable terminal) if cranking circuit or fuel shutoff solenoid (and not starter) is being
tested.
Test/Check Point
5. Ignition switch terminal purple wire
6. Blade Drive Switch purple wire
7. Blade Drive Switch purple/white wire Battery voltage
8. Park brake switch purple/white wire
9. Park brake switch purple wire
10. Starter solenoid purple wire
11. Starter solenoid ground terminal
(black wire)
12. Starter solenoid battery terminal
(red wire, rear terminal)
13. Starter solenoid starter terminal
(red wire, front terminal)
14. Starting motor
Fuel Shutoff Solenoid Test:
(16 hp only)
15. Ignition switch yellow wire
16. Fuel shut-off solenoid yellow wire
17. Fuel shut-off solenoid black wire
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• Meter negative (—) lead on battery negative (—) terminal
• Meter positive (+) lead on numbered test point
Normal
11.8-13.2 volts
Battery voltage
Battery voltage
Battery voltage
• Blade Drive OFF
• Park brake engaged
Normal
Battery voltage
Battery voltage
Battery voltage
Battery voltage
Battery voltage
Greater than 0 volts
Less than 0.2 volts
Battery voltage
Battery voltage
Battery voltage
(Ignition Switch In Start Position)
Battery voltage
Battery voltage
Greater than 0 volts
Less than 0.2 volts
ELECTRICAL
If Not Normal
Test battery
Check positive battery cable
Check fuse and red/wht ignition wires
Check red ignition wires
• Transmission in neutral
• Ignition switch in START position
If Not Normal
Replace ignition switch
Test purple wire back to ignition switch
Check Blade Drive Switch and lever
Test purple/white wire back to blade switch
Check park brake switch and lever
Test purple wire back to park brake switch
Greater than 0.2 volts - check starter
solenoid ground circuit black wire.
0 volts - replace solenoid
Clean terminals at battery and solenoid
Test red battery wire for shorts or breaks.
Clean battery terminals.
Replace starter solenoid
Clean battery terminals.
Check red wire back to solenoid.
Test starter (see engine manual)
Replace ignition switch
Check yellow wire back to ignition switch
Greater than 0.2 volts: check engine ground
0 volts: replace fuel shut-off solenoid
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