Mitsubishi FB13PNT, Quick Start Manual

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2-6 2-6
501135 501135
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3. 3.2 2 Tr Trac acti tion on Mo Moto tor r L. L.H. H.,O ,Ove verh rhea eati ting ng (E (E1) 1)
Error code: E1 Error code: E1
Situation Situation
Controller/m Controller/motor overheat indicator ON. otor overheat indicator ON. Poor pulling power and Poor pulling power and acceleration. Normal pump motor and acceleration. Normal pump motor and power power
steering operations. Service tool "Alarm status" and "E1" displayed. steering operations. Service tool "Alarm status" and "E1" displayed.
Possible Possible
cause cause
Overheating of left traction motor, faulty left traction motor or thermal sensor, faulty or Overheating of left traction motor, faulty left traction motor or thermal sensor, faulty or open harness wiring, open harness wiring,
faulty left traction inverter DSP card, abnormal power supply of faulty left traction inverter DSP card, abnormal power supply of logic unit, brake or parking logic unit, brake or parking brake drag, brake drag,
abnormality in front axle, faulty display unit abnormality in front axle, faulty display unit
Trigger of Trigger of
the error the error
code
code
Motor temperatu Motor temperature is out of range of -25 °C to 145 re is out of range of -25 °C to 145 °C (-13 °F to 293 °F). °C (-13 °F to 293 °F).
Recovers when motor temperatur Recovers when motor temperature is in e is in range of -20 to 70 range of -20 to 70 °C (-4 to 158 °C (-4 to 158 °F). °F).
Checks Checks
502805 502805
(1) Let truck cool for 15 minutes (1) Let truck cool for 15 minutes
O O v v e e r r h h e e a a t t i i n n d d i i c c a a t t o o r r O O N N O O v v e e r r h h e e a a t t i i n n d d i i c c a a t t o o r r O O F F F F
(2) on motor becomes normal (2) on motor becomes normal
(3) Disconnect battery plug (3) Disconnect battery plug
Disengage brake and parking brake, and check their Disengage brake and parking brake, and check their
drag drag
No No drag drag Drag Drag
(4) Adjust brake (4) Adjust brake
(5) Lift front wheels, and disengage parking brake (5) Lift front wheels, and disengage parking brake
Turn key switch to OFF, rotate front wheels Turn key switch to OFF, rotate front wheels
Confirm there is no diff Confirm there is no diff erenc erenc e in rotation e in rotation load load
between right and left wheels between right and left wheels
No No difference difference Difference Difference
(6) Check if truck is operated on steep (6) Check if truck is operated on steep
upgrade or to pull large cargo load upgrade or to pull large cargo load
Normal Normal
(7) Perform inverter discharging work (7) Perform inverter discharging work
(8) Replac (8) Replac e left e left traction traction
motor motor
(9) Replac (9) Replac e left e left traction traction
motor or front axle motor or front axle
(10) Confirm temperature of left traction motor with (10) Confirm temperature of left traction motor with
input/output monitor input/output monitor
Less Less than than -20 -20 °C(-4 °C(-4 °F) °F) -20 -20 °C °C to to 70 70 °C °C
o o r r m m o o r r e e t t h h a a n n 7 7 0 0 ° ° C C ( ( 1 1 5 5 8 8 ° ° F F ) ) ( ( - 4 - 4 ° ° F F t t o o 1 1 5 5 8 8 ° ° F F ) )
(11) Disc (11) Disc onnect battery plug. Wa onnect battery plug. Wa it it until lef until lef t t traction motor traction motor
temperature becomes close to room temperature temperature becomes close to room temperature
With service tool With service tool
Without service tool Without service tool
If problem reoccurs If problem reoccurs
(12) Normal (12) Normal