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6
EXPORT IQ PLUS CHARGER (ONBOARD)
Test Procedures
8. When troubleshooting and repairs are complete, properly connect the relay wiring. See following
WARNING.
ý WARNING
• The relay wiring must be properly connected prior to placing the charger back into normal
service. Failure to remove the jumper wire and properly connect the relay wiring could result
in property damage, severe personal injury, or death.
AC plug may have different appearance
depending on geographic region.
Figure 6-9 AC Circuit Continuity Test
TEST PROCEDURE 4 – DIODES
Use Test Procedure 4A – Single Diode Failure on page 6-14 for single diode failures and testing of individual
diodes. If both diodes have failed, use Test Procedure 4B – Both Diodes Failed on page 6-15.
Test Procedure 4A – Single Diode Failure
See General Warning, Section 1, Page 1-1.
A single diode failure is indicated by the failure of one fuse link (closed circuit diode) or by the charger output
being low (open circuit diode). If a diode has failed, the entire heatsink must be replaced. To check diodes:
1. Disconnect AC cord from the wall outlet.
2. Remove the battery charger from the vehicle. See Onboard Charger Removal on page 6-34.
3. Remove the charger cover.
4. Disconnect one transformer secondary coil wire from the diode terminal (Figure 6-10, Page 6-15).
5. Using a low voltage continuity tester or multimeter set to the diode test function, connect the red (+) test
probe to the diode mounting plate and the black (–) test probe to a diode terminal and note the reading
(Figure 6-10, Page 6-15).
6. Reverse test probes and check each diode again and note the reading (Figure 6-11, Page 6-15). A
diode is designed to conduct current in one direction only. If a diode conducts current (shows continuity)
in both directions, the entire heatsink with diodes must be replaced. If a diode does not conduct current
(does not show continuity) in either direction, the entire heatsink must be replaced.
Page 6-14
2008 Export Battery Charger Maintenance and Service Manual