Mitsubishi FB13PNT, Quick Start Manual

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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3. 3.16 16 Li Line C ne Con onta tact ctor F or Fau ault ( lt (40 40))
Error code: 40 Error code: 40
Situation Situation
Display: "40". All Display: "40". All truck operations inhibited. Line contactor HOLD and ST contactor HOLD. truck operations inhibited. Line contactor HOLD and ST contactor HOLD.
Traction motor Traction motor and pump mot and pump motor operation or operation inhibited. If this fault inhibited. If this fault occurs before occurs before ST contactor CL ST contactor CLOSE, all OSE, all
operations inhibited except mast lowering operation. operations inhibited except mast lowering operation.
Possible Possible
cause
cause
Break of line fuse. Break of line fuse.
Faulty line contactor. Faulty line contactor.
Faulty right, left traction inverter or pump inverter.
Faulty right, left traction inverter or pump inverter.
Faulty DSP card in
Faulty DSP card in right, left traction inverter. right, left traction inverter.
Faulty main harness. Faulty main harness.
Faulty logic unit.
Faulty logic unit.
Trigger of Trigger of
the error the error
code
code
Inverter voltage data is checked when contactor is closed (400 Inverter voltage data is checked when contactor is closed (400 ms). ms).
Checks Checks
(5) (5)
Replace the failed fuse Replace the failed fuse
(13) (13)
Repair or replace Repair or replace main Harness main Harness
(2) (2)
Disconnect battery plug Disconnect battery plug , , then perform inverter d then perform inverter d ischarging ischarging
work work
Check continuity of Check continuity of the line fuse the line fuse for inverters for inverters
Check continuity of the control line fuse for contactor coil Check continuity of the control line fuse for contactor coil
C C o o n n t t i i n n u u i i t t y y N N o o c c o o n n t t i i n n u u i i t t y y
(12) (12)
Perform inverter discharging work, then replace logic Perform inverter discharging work, then replace logic
card of logic unit card of logic unit
(10) (10)
Disconnect con Disconnect con nectors nectors E-04 E-04
Check continuity between Check continuity between E-04-63 and line E-04-63 and line
contac contac tor coil plus tor coil plus (+) (+)
Check continuity between Check continuity between E-04-59 and line E-04-59 and line
contac contac tor coil plus tor coil plus (-) (-)
Continuity Continuity No No continuity continuity
(9) (9)
Measure resistance of contactor coil Measure resistance of contactor coil . .
[44Ω at -30 °C(-22 ° [44Ω at -30 °C(-22 ° F) to 65Ω at 80 °C(176 °F)] F) to 65Ω at 80 °C(176 °F)]
Within Within range range Out Out of of range range
(4) (4)
Block whe Block whe els els , and remove , and remove the traction fuse the traction fuse , pump fuse , pump fuse
and steering fuse and steering fuse
Then confirm line cont Then confirm line cont actor operat actor operat ion in self ion in self - - diagnosis diagnosis
step [ step [
14 14
] ]
Not Not operated operated Operated Operated
(11) (11)
Replace line contactor Replace line contactor
(8) (8) Check to see if line contactor tip moves smoothly Check to see if line contactor tip moves smoothly
Check line contactor tip for melting Check line contactor tip for melting
Normal Abnormal Normal Abnormal
(3) (3)
See trouble shooting code See trouble shooting code
" "
41 41
" "
(6) (6)
Disconnect battery plug , t Disconnect battery plug , t hen perform in hen perform in verter dischargin verter dischargin g g
work work
(7) (7) Go to step (14) Go to step (14)
(1) (1)
Turn off power, turn o Turn off power, turn o n powe n powe r again r again . Co . Co nfirm error code nfirm error code display display . .
Er Er ro ro r r co co d d e e 40 40 ( ( No No t t Er Er ro ro r r 41 41 ) ) Er Er ro ro r r co co d d e e
" "
41 41
" " " " " " " " " "