Electrical System Quick Checks; Testing The Battery (Open Circuit Test); Testing The Charging System - Toro Groundsmaster 7210 Service Manual

Electrical System Quick Checks

Testing the Battery (Open Circuit Test)

Testing the Charging System

Electrical System: Electrical System Quick Checks
Use a multimeter to measure the voltage between the battery terminals; refer to
Battery Test Table (page
Set the multimeter to the DC volts settings. The battery must be at a temperature
of 16°C to 38°C (60°F to 100°F). Ensure that the key is in the O
all the accessories are turned off.
Connect the positive (+) meter lead to the positive battery post and negative (-)
meter lead to the negative battery post.
Measure and record the battery voltage. Use the
to determine charge level of the battery.
Note: This test provides a relative condition of the battery. The load testing of
the battery provides additional and more accurate information; refer to
the Battery (page 5–61).
Battery Test Table
Voltage Measured
12.68 V (or higher)
12.45 V
12.24 V
12.06 V
11.89 V
This is a simple test that determines if a charging system is functioning. It tells
you if the charging system has an output, but not its capacity.
Tool required: Digital multimeter to set the DC volts.
Test instructions: Connect the positive (+) multimeter lead to the positive battery
post and negative (-) multimeter lead to the negative battery post. Keep the test
leads connected to the battery posts and record the battery voltage.
Note: When starting the engine, the battery voltage drops and then must
increase once the engine is running.
Note: Depending upon the condition of the battery charge and battery
temperature, the battery voltage increases at different rates as the battery
charges.
Start the engine and run it at high-idle speed (3,000 rpm). Allow the battery to
charge for a minimum time of 3 minutes. Record the battery voltage.
Note: After running the engine for a minimum time of 3 minutes, the battery
voltage must be minimum 0.50 V higher than that of the initial battery voltage.
Refer to the Battery Voltage Table (page 5–21)
system that is functioning.
5–20).
Page 5–20
position and
FF
Battery Test Table (page 5–20)
Battery Charge Level
Fully charged (100%)
75% charged
50% charged
25% charged
0% charged
for an example of a charging
Groundsmaster 7210
16222SL Rev C
Servicing