EXPORT IQ PLUS CHARGER (ONBOARD)
Troubleshooting
2008 Export Battery Charger Maintenance and Service Manual
Page 6-9
6
Charger output is low
One diode failed
Test Procedure 4A – Single Diode Failure
on page 6-14
Transformer coil short-circuit failure
Test Procedure 6 – Transformer on
page 6-16
Onboard computer malfunction
Test Procedure 2 – Control Board on
page 6-12
Charger turns off too soon
AC power supply was shut off
Test Procedure 3 – AC Power and
Continuity Check of AC Circuit on
page 6-13
Onboard computer malfunction
Test Procedure 2 – Control Board on
page 6-12
Batteries may be fully charged
Test Procedure 7 – Battery State of
Charge Test on page 6-18
Charger goes to 16 hour time out
Onboard computer malfunction
Test Procedure 2 – Control Board on
page 6-12
Extremely discharged batteries or cold
temperature
Recharge batteries
Failed or weak battery
See Batteries section in the appropriate
maintenance and service manual
AC line fuse blows or AC circuit
breaker trips
AC cord is shorted
Test Procedure 8 – Continuity on
page 6-18
Failed transformer
Test Procedure 6 – Transformer on
page 6-16
Incorrect charger wiring
Check battery charger wiring
Battery warning light illuminates for ten
seconds at four second intervals
AC power interrupted
Test Procedure 3 – AC Power and
Continuity Check of AC Circuit on
page 6-13
Onboard computer malfunction
Test Procedure 2 – Control Board on
page 6-12
Charger failure
See Testing Charger Operation on
page 6-6
16 hour time out
See Battery Warning Light on page 6-2
Battery or batteries need to be replaced
See Batteries section in the appropriate
maintenance and service manual
Batteries are getting close to full discharge
capacity
Recharge batteries as soon as possible
IQ PLUS ONBOARD BATTERY CHARGER TROUBLESHOOTING GUIDE
SYMPTOM
POSSIBLE CAUSES
CORRECTIVE ACTION