JLG 19BD Service Manual - Manual (Page 73)

SECTION 3 - TROUBLESHOOTING
3120752 – JLG Lift – 3-3
Voltage Measurement Resistance Measurement
Figure 3-1. Voltage Measurement (DC) Figure 3-2. Resistance Measurement
• If meter is not auto ranging, set it to the correct range
(See multimeter’s operation manual)
• Use firm contact with meter leads
• First test meter and leads by touching leads together.
Resistance should read a short circuit (very low resis-
tance)
• Circuit power must be turned OFF before testing
resistance
• Disconnect component from circuit before testing
• If meter is not auto ranging, set it to the correct range
(See multimeter’s operation manual)
• Use firm contact with meter leads