Mitsubishi FB13PNT, Quick Start Manual, Page: 162 / 292

2-75 2-75
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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.3 3.32 2 Til Tilt L t Leve ever, r, Fau Faulty lty Set Settin ting ( g (H2) H2)
Error code: H2 Error code: H2
Situation Situation
Display: "H2" flashes. Display: "H2" flashes. Pump motor and power steering operations inhibited. Pump contactor OPEN if this fault Pump motor and power steering operations inhibited. Pump contactor OPEN if this fault
occurs when turning on power. Pump contactor CLOSE if this fault occurs when turning on power. Pump contactor CLOSE if this fault occurs during pump operation and then occurs during pump operation and then
OPEN if truck stops. OPEN if truck stops.
Possible Possible
cause
cause
Key switch turned on while operating tilt Key switch turned on while operating tilt lever, faulty tilt control lever or tilt lever, faulty tilt control lever or tilt switch, faulty main harness, faulty switch, faulty main harness, faulty
logic unit, faulty input unit. logic unit, faulty input unit.
Trigger of Trigger of
the error the error
code
code
Detects tilt control lever signal of CAN Detects tilt control lever signal of CAN when turning on power (FC specification). Detects tilt microswitch when when turning on power (FC specification). Detects tilt microswitch when
turning on power (MC turning on power (MC specification). specification).
Checks Checks
(1) (1)
If If this this fault fault occurred occurred during during If If this this fault fault occurred occurred when when
pump pump motor motor operation operation turning turning on on power power
(2) Sit on seat, then stop pump motor operation (2) Sit on seat, then stop pump motor operation
If If fault fault remains remains Normal Normal
(7) Change tilt control lever to other normal control lever (7) Change tilt control lever to other normal control lever
Not Not changed changed Error Error changed changed
(12) Replace tilt switch (12) Replace tilt switch
(6) Refer to error code (6) Refer to error code
"54", "67" or "(L)" "54", "67" or "(L)"
(9) Repair or replace (9) Repair or replace
FC-IN harness FC-IN harness
(10) Replace tilt control (10) Replace tilt control
lever lever
(5) Turn off power (5) Turn off power
(8) Disconnect connector E-36 of microswitch (8) Disconnect connector E-36 of microswitch
Sit on seat, Sit on seat, then then turn turn on on power power again again
If If fault fault remains remains Normal Normal
(11) Disconnect battery plug, then perform inverter (11) Disconnect battery plug, then perform inverter
discharging work discharging work
(13) Check continuity between E-04-50 and E-36-3(66) (13) Check continuity between E-04-50 and E-36-3(66)
Check s Check s hort circuit between E-36-3 hort circuit between E-36-3 and E-36-6 and E-36-6
Continui Continui ty, ty, Not Not shorte shorte No No continui continui ty ty , , Shorted Shorted
MC MC
specification specification
FC specification FC specification
If f If f au au lt r lt r em em ai ai ns ns E E rr rr or c or c od od e e "5 "5 4 4 " " or or " " 67 67 " " or or " " (L) (L) " "
(4) Turn off power (4) Turn off power
Sit on seat, then turn on power again without tilt Sit on seat, then turn on power again without tilt
operation operation
(3) Fail-safe function (3) Fail-safe function