Jacobsen AR3, Technical/Repair Manual

Page: 123 / 342

4-66 4181384 First Edition
ELECTRICAL
4
Rocker Switch Test
See Figures 4-38 and 4-39.
Figure 4-38
This procedure applies to the following switches:
• Work Light Switch (1)
• Weight Transfer Switch (2)
• Mow Switch (3)
1. Park the mower safely. (See “Park Mower Safely” on
page 1-7.)
2. Remove the switch(es) from the instrument panel.
(See “Rocker Switches” on page 4-80.)
Figure 4-39
3. Place the switch in the off position.
NOTE
Use the alignment pin (8) as a reference point for correct
orientation.
4. Connect one test lead to terminal (10).
5. Connect the other test lead to terminal (11) and
check for continuity.
Is continuity indicated?
YES Proceed to step 6.
NO The switch is faulty; replace the switch.
6. Place the switch in the on position.
7. Move the test lead from terminal (11) to terminal (9)
and check for continuity.
Is continuity indicated?
YES Proceed to step 8.
NO The switch is faulty; replace the switch.
8. Place the switch in the off position.
9. Connect one test lead to terminal (6).
10. Connect the other test lead to terminal (5) and check
for continuity.
Is continuity indicated?
YES Proceed to step 11.
NO The switch is faulty; replace the switch.
11. Place the switch in the on position.
12. Connect one test lead to terminal (6).
13. Connect the other test lead to terminal (7) and check
for continuity.
Is continuity indicated?
YES Proceed to step 14.
NO The switch is faulty; replace the switch.
NOTE
Terminals 4 and 12 are the connections for the LED used
to illuminate the switch when the switch is turned on. The
following test must be performed using a digital
multimeter using a diode test setting.
14. Connect the test leads to terminals (4 and 12), and
record the reading.
15. Reverse the test leads, and record the reading.
Does the meter read approximately 1.76 volts in
one direction, and an open circuit when the leads
are reversed?
YES The switch is good.
NO The LED is faulty; replace the switch.
Required Tools or Equipment
Digital Multimeter or Ohmmeter
TN1066
2
3
1
8
TN1102
7
OFF
ON
9
10
11
12
6
5
4