Club Car Carryall 550 2019 Maintenance And Service Manual page 195

ELECTRIC VEHICLE - ELECTRICAL SYSTEM
TROUBLESHOOTING
TEST PROCEDURE 6 – Wire Harness Diodes
See General Warnings on page 1-1.
A diode is designed to conduct current in one direction only. Depending on the application, diodes are used in the
vehicle to control electrical system logic, or to help protect relay and switch contacts from excessive arcing. See
following NOTE.
NOTE: If a diode conducts current in both directions, the diode has failed closed. If a diode will not conduct current in
either direction, the diode has failed open (Figure 12-6, Page 12-19).
WAVETEK 5XL
V V
OFF
1000 500
200 200
20
200
2 2m
200
20
m
m
200
2000
k m
200k
20k 200
A
2k
V ! COM ! 200nA
MAX
1000 ---
FUSED
750V
WAVETEK 5XL
V OFF V
1000
500
200 200
20 200
2 2m
200
m 20
m
200
2000
k m
200k
20k 200
2k A
! !
V COM 200nA
MAX
1000 ---
FUSED
750V
WAVETEK 5XL
V
V OFF
1000 500
200 200
20 200
2 2m
200 20
m
m
2000 200
k m
200k
20k 200
2k A
! ! 200nA
V COM
MAX
1000 ---
FUSED
750V
1. VOM Black Lead 2. VOM Red Lead 3. Wiring Diagram Symbol
with Diode Stripe Orientation 4. Good Diode (Probe Scenario A) -
Conducts Current and Shows Continuity 5. Good Diode (Probe
Scenario B) - No Continuity 6. Bad Diode - Meter Beeps In Either
Direction (Probe Scenarios A and B)
1127
Figure 12-6 Basic Diode Information
2019 Carryall 550 Maintenance and Service Manual
12
Test Procedures
Page 12-19