Mitsubishi FB13PNT, Quick Start Manual

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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.3 3.35 5 Sea Seat Swit t Switch, F ch, Faul aulty Set ty Settin ting for Hy g for Hydra drauli ulic ((L) c ((L)))
Error code: (L) Error code: (L)
Situation Situation
Display: "L" flashes. Pump motor and Display: "L" flashes. Pump motor and power steering operations inhibited. Pump contactor OPEN if this fault 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
Operator not seated, seat switch turned off during pump motor operation, improper seat suspension Operator not seated, seat switch turned off during pump motor operation, improper seat suspension
adjustment, faulty seat switch, faulty main harness,
adjustment, faulty seat switch, faulty main harness, faulty logic unit. faulty logic unit.
Trigger of Trigger of
the error the error
code
code
Detects seat switch opening when turning on power or during pump operation. Detects seat switch opening when turning on power or during pump operation.
Checks Checks
(1) (1)
If If this this fault fault occurred occurred during during If If this this fault fault occurred occurred when when
turning turning on on power power turning turning on on power power
(2) Sit on seat, then stop pump mot (2) Sit on seat, then stop pump mot or operation or operation
If If fault fault remains remains Normal Normal
(4) Turn off power (4) Turn off power
Sit on seat, then turn on power again Sit on seat, then turn on power again
(5) Turn off power (5) Turn off power
(6) Adjust seat suspension (6) Adjust seat suspension
If If fault fault remains remains Normal Normal
(8) Disconnect battery plug (8) Disconnect battery plug
(10) Disconnect battery plug, then perform inverter (10) Disconnect battery plug, then perform inverter
discharging work discharging work
(12) Disc (12) Disc onnec onnec t connector t connector s E-04 s E-04 and E-03 and E-03 of logic unit of logic unit
(11) Replace seat switch (11) Replace seat switch
If fault remains If fault remains
(3) Fail-safe function (3) Fail-safe function
(7) Faulty s (7) Faulty s eat switch eat switch position position
(9) Disconnect connector C-02, then short-circuit (9) Disconnect connector C-02, then short-circuit
between terminals C-02-2 and C-02-3 between terminals C-02-2 and C-02-3
Turn o Turn o n n power power again again
If If fault fault remains remains Normal Normal