Mitsubishi FB13PNT, Quick Start Manual

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2-102 2-102
501153 501153
Emetrgency SW Emetrgency SW
(male) (male) (female) (female)
6 6 5 5 4 4
1 1 0 0 9 9 8 8
4 5 6 7 4 5 6 7
8 8 9 9 1 1 0 0
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3. 3.45 45 EP EPS Co S Cont ntro roll ller F er Fau ault lt (7 (71) 1)
Error code: 71 Error code: 71
Situation Situation
Display: "71". All Display: "71". All operations inhibited except mast lowering operation. Line steering contactor OPEN. Traveling operations inhibited except mast lowering operation. Line steering contactor OPEN. Traveling
speed limited to 5 km/h. speed limited to 5 km/h.
Possible Possible
cause
cause
Faulty main harness or connector E-08 comes off. Faulty main harness or connector E-08 comes off.
(Communicatio
(Communication between logic n between logic unit and traction inverter.) unit and traction inverter.)
Faulty logic unit. Faulty logic unit.
Display fault.
Display fault.
PS Controller fault.
PS Controller fault.
Trigger of Trigger of
the error the error
code
code
ROM SUM value of pump inverter is different from check data. ROM SUM value of pump inverter is different from check data.
RAM of pump inverter is faulty.
RAM of pump inverter is faulty.
Communication between logic unit and PS
Communication between logic unit and PS controller is impossible. controller is impossible.
No life signal is inputted. No life signal is inputted.
Checks Checks
(1) Disconnect battery plug, then perform inverter discharging work (1) Disconnect battery plug, then perform inverter discharging work
(6) Disconnect connector E-02 of logics Unit (6) Disconnect connector E-02 of logics Unit
(Already disconnected E-01 and E-08) (Already disconnected E-01 and E-08)
Chec Chec k continuity between E-02-5 k continuity between E-02-5 and E-08-21(3 and E-08-21(3 ) )
Chec Chec k continuity between E-02-6 k continuity between E-02-6 and E-08-30(4 and E-08-30(4 ) )
Continuity Continuity No No continuity continuity
CA CA N N
14V, 8V 14V, 8V
pow pow er er su su pply pply
(5) Disc (5) Disc onnect connector E-08 and onnect connector E-08 and E-01 of logics U E-01 of logics U nit nit
Chec Chec k continuity k continuity between between E-01-4 E-01-4 and E-08-1(11) and E-08-1(11)
Chec Chec k continuity k continuity between between E-01-6 E-01-6 and E-08-25(12 and E-08-25(12 ) )
Chec Chec k continuity k continuity between between E-01-3 E-01-3 and E-08-18(10 and E-08-18(10 ) )
Continuity Continuity No No Continuity Continuity
(2) Remove connector E-08 (2) Remove connector E-08
Check the contact Check the contact face bot face bot h of h of connector E connector E -08 on harness side and E-08 on inverter side -08 on harness side and E-08 on inverter side
Connect connector E-08 and tuning on power Connect connector E-08 and tuning on power
If fault (71) remains If fault (71) remains
(3) Disconnect battery plug, then perform inverter discharging work (3) Disconnect battery plug, then perform inverter discharging work
(4) Disconnect connector E-01 (4) Disconnect connector E-01
Chec Chec k k no con no con tinuity between E-01-3 tinuity between E-01-3 and E-01-6 and E-01-6
Check no Check no continuit continuit y between y between E-01-3 E-01-3 and E-01-11 and E-01-11
Chec Chec k k no con no con tinuity between E-01-4 tinuity between E-01-4 and E-01-6 and E-01-6
Check no Check no continuit continuit y between y between E-01-4 E-01-4 and E-01-11 and E-01-11
No No Continui Continui ty ty Continui Continui ty ty