Club Car 2008-2011 Maintenance And Service Manual page 189

POWERDRIVE 3 – MODEL 26580
Figure 7-18 Diode Test
Test Procedure 4B – Both Diodes Failed
See General Warning, Section 1, Page 1-1. See additional WARNING on page 7-1.
To check the diodes, use Test Procedure 4A – Single Diode Failure on page 7-20. If both diodes have failed
closed, both charger fuse links will be blown. If both diodes have failed open, the relay will close and the trans-
former will hum, but the ammeter will not indicate any output and the AC circuit breaker may trip off. If both
diodes have failed open or closed, the entire diode/heatsink assembly must be replaced. To determine why
both diodes failed:
1. Check the batteries and the receptacle to ensure that they are wired in the correct polarity (Figure 7-11,
Page 7-16 through Figure 7-16, Page 7-18). Also check the voltage and polarity at the receptacle.
2. Make sure the charger is wired correctly: The DC cord red wire should be connected to the left side of
the ammeter (when viewed from inside the charger), the DC cord blue wire should be connected to the
relay coil, and the DC cord black wire should be connected to the fuse link (Figure 7-9, Page 7-11). If a
reverse polarity connection is made between the charger and the batteries, the fuse link will blow when
the DC cord is connected to the vehicle, whether or not the AC cord is plugged into an outlet.
3. On rare occasions, both diodes may fail as a result of a lightning strike at the charging location.
4. Excessive heat due to a loose connection may also cause the fuse link to blow. Be sure fuse connections
are tightened to 23 in-lb (2.6 N·m).
5. Ensure that the charger and vehicle are wired properly and all connections are clean and tight.
TEST PROCEDURE 5 – CHARGER DC CIRCUIT CONTINUITY TEST
See General Warning, Section 1, Page 1-1. See additional WARNING on page 7-1.
1. Disconnect the AC cord from the wall outlet and the DC cord from the vehicle charger receptacle.
2. Using a multimeter set to the diode test function (
the pin marked positive (+) on the DC plug (Figure 7-20, Page 7-22). Place the negative probe (–) on
the pin marked negative (–). The multimeter should indicate an overload (no continuity).
DISCONNECTED
SECONDARY COIL
WIRE
2008-2011 Domestic Battery Charger Maintenance and Service Manual
Figure 7-19 Diode Test – Probes Reversed
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), place the positive (+) probe of the multimeter on
7
Test Procedures
Page 7-21