Mitsubishi FB13PNT, Quick Start Manual

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2-45 2-45
501142 501142
6 6 3 3 6 6 1 1
5 5 9 9 - - 5 5 5 5 5 5 3 3 5 5 1 1 4 4 9 9 - - - -
43 43
6 6 4 4 6 6 2 2
6 6 0 0 - - 5 5 6 6 - - 5 5 2 2 5 5 0 0 4 4 8 8 - -
44 44
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.1 3.17 7 Ste Steeri ering ng Con Contac tactor tor Fau Fault lt (41 (41))
Error code: 41 Error code: 41
Sit Situat uation ion Dis Displa play: "41 y: "41". All t ". All truc ruck ope k operat ration ions inhi s inhibit bited ed. Lin . Line con e contac tactor O tor OPEN a PEN and ste nd steeri ering co ng conta ntacto ctor OPE r OPEN. N.
Possible Possible
cause
cause
Faulty steering contactor, faulty main harness, faulty logic unit. Faulty steering contactor, faulty main harness, 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
(1) Turn off power, then turn on power again. Confirm error code display (1) Turn off power, then turn on power again. Confirm error code display
If fault If fault (41) rem (41) rem ains ains
(7) (7) Go to step (13) Go to step (13)
(10) (10) Replac Replac e steering e steering contac contac tor tor
(12) Repair or replace main harness (12) Repair or replace main harness
(3) Blo (3) Blo ck wh ck wh eels eels and remove the traction fuse,pump f and remove the traction fuse,pump f use use , ,
steering fuse steering fuse
Then confirm pump contactor Then confirm pump contactor
operation in self-dia operation in self-dia gnostic gnostic s step s step [15] [15]
Not Not operated operated Operated Operated
(5) Disconnect battery plug, then perform inverter discharging work (5) Disconnect battery plug, then perform inverter discharging work
(8) Measure resistance of contactor coil (8) Measure resistance of contactor coil
[61Ω at -30 °C(-22 °F) to 91Ω at 80 °C(176 °F)] [61Ω at -30 °C(-22 °F) to 91Ω at 80 °C(176 °F)]
Within Within range range Out Out of of range range
(9) Disconnect connectors E-04 (9) Disconnect connectors E-04
Chec Chec k continuity k continuity between between E-04-63 E-04-63 and Steering and Steering
contactor coil plus(+) contactor coil plus(+)
Check continuity between E-04-64 and steering Check continuity between E-04-64 and steering
contactor coil minus(-) contactor coil minus(-)
Continuity Continuity No No continuity continuity
(11) Perform inverter discharging work, then replace (11) Perform inverter discharging work, then replace
logic card of logic unit logic card of logic unit
(6) Chec (6) Chec k to k to see if steer see if steer ing ing contac contac tor t tor t ip moves smoothly ip moves smoothly
Chec Chec k steering k steering contac contac tor tip for melting tor tip for melting
Normal Abnormal Normal Abnormal
(2) Disconnect battery plug, then perform inverter discharging work (2) Disconnect battery plug, then perform inverter discharging work
Check continuity of the steering fuse Check continuity of the steering fuse . .
Check continuity of the control line fuse for contactor coil Check continuity of the control line fuse for contactor coil
Continuity Continuity No No continuity continuity
(4) Replace steering fuse (4) Replace steering fuse
(13) Install the steering fuse, connect battery plug and tern on (13) Install the steering fuse, connect battery plug and tern on
(14) Measure voltage between P and N of EPS controller (1 minute may) (14) Measure voltage between P and N of EPS controller (1 minute may)
Normal Abnormal Normal Abnormal
(15) Disconnect battery plug, then perform inverter (15) Disconnect battery plug, then perform inverter
discharging work discharging work
(16) Replace power cable (16) Replace power cable