JLG X390AJ-X14J Supplement Manual page 78

SECTION 3 - TROUBLESHOOTING AND FAULT CODES
the connection from the "5 ways BMS connector
and the BMS.
If all the connections and supply are ok, go to
step 8, if not go to step 9.
8. All the connections and the supply are ok.
Check Relay no. 3 and its connection; remove the
BMS cover and check if the feed to green LED are
ON (yellow circle) and check if the feed to red
LED is flashing (yellow square).
If all the connections are properly but there is no
supply to LED on the BMS, replace the BMS.
NOTE: Red led flashing after the start (yellow triangle),
indicates a BMS failure. Connect RamHino tool to
the machine to read BMS failure codes.
9. Battery charger works properly, but the battery
level indicated on the display remains "zero".
If wrench icon is shown on the display as shown
below, go to step 10, if not go to step 17.
10. Wrench icon is shown on the display.
Check the trouble codes, push button no. 6 (ser-
vice), and then no. 3 (errors), then no. 1 (previ-
ous).
If trouble code "80" is shown on the inverter, go
to step 11, if not go to step 14.
3-16
MAF12140
MAF12000
11. Inverter trouble code is number "80".
Check fuse F4, then check the electric line of the
fuse F4. If the fuse F4 and its line are ok, check
fuse F160, then check if fuse F160 has 48 Volt to
the ground.
If fuse F160 shows 48 Volt, go to step 12, if not go
to step 13.
12. Fuse 160 A has 48 Volt.
Check the Inverter connections.
13. Fuse 160A does not show 48 Volt.
If Fuse 160A does not receive supply, BMS can be
OFF, so the internal contactor is also OFF. go to
step 7. If everything is ok check the internal con-
tactor.
14. Inverter trouble code is not number "80".
If the inverter trouble code is number "74", go to
step 15. If not go to step 16.
15. Inverter trouble code is number "74".
Check the connections from the inverter to the
"MR" and check the "MR" coil.
16. See explanation on Service Manual table list.
17. Wrench icon does not show on the display.
Check fuse F1, then check if the relay coils of R1
and R4 have 12 volts with the key switch ON.
If the coils show supply, go to step 18, if not go
to step 19.
18. Coils of R1 and R4 receive no supply with the key
switch ON.
Check the connections from 12 Volt Lead-acid
battery to R1 and R4 coils, then check pin A30
and A29 of the ECM 1-2.
19. Coils of R1 and R4 receive supply.
Check relay R1, then check the connection from
wire "111" or R1 to pin no. 2 of "5 ways BMS con-
nector", if failure remains go to step 7.
31215460