A Series Diesel Engine Electrical System 138
z If no voltage is indicated at the S terminal,
check:
z Fuses
z Voltages to the ignition switch
z And, if the vehicle is so equipped, voltage to
clutch switch, neutral safety switch and
engine safety shutoff system.
If the solenoid does make an audible sound, turn the
switch off and attempt to bar the engine in both
directions.
Bar the engine as follows:
1. Direction of engine rotation.
2. Direction of opposite engine rotations.
3. Direction of engine rotation.
If the engine will bar at Step 3, attempt to start the
engine. If the starter cranks the engine, check the
starter pinion gear and flywheel ring gear for damage.
If the engine bars and the starting motor does not
crank, check the voltage between the solenoid and
starting motor. The ignition switch must be in the start
position.
No Voltage: Starter is at fault
Normal Voltage: The solenoid is at fault.
When troubleshooting a 24 volt system, the value is 24
volts.
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