Mitsubishi FB13PNT, Quick Start Manual, Page: 148 / 292

2-61 2-61
E 14 E 14
501135 501135
E-17 E-17
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.2 3.25 5 Tra Tracti ction Mo on Motor L tor L.H. .H., Pu , Pulse I lse Inpu nput Fau t Fault (5 lt (53) 3)
Error code: 53 Error code: 53
Situation Situation
Display: "53". Traction motor operation inhibited. Pump motor and power steering operations inhibited if this Display: "53". Traction motor operation inhibited. Pump motor and power steering operations inhibited if this
fault occurs before pump contactor CLOSE, and both operable if it
fault occurs before pump contactor CLOSE, and both operable if it occurs after pump contactor CLOSE. Line occurs after pump contactor CLOSE. Line
contactor OPEN and pump contactor OPEN and pump contactor CLOSE or OPEN. contactor CLOSE or OPEN.
Possible Possible
cause
cause
Faulty contact of left side traction inverter connector, faulty connection of left Faulty contact of left side traction inverter connector, faulty connection of left side traction motor connector side traction motor connector
and cable, faulty 12V and cable, faulty 12V input voltage of left side traction inverter, faulty contact or input voltage of left side traction inverter, faulty contact or wire breakage of left side wire breakage of left side
traction motor speed sensor harness, faulty DSP card of left side traction inverter, faulty left side traction motor traction motor speed sensor harness, faulty DSP card of left side traction inverter, faulty left side traction motor
speed sensor.
speed sensor.
Trigger of Trigger of
the error the error
code
code
Motor rotation speed is more than 6000 rpm. Motor rotation speed is more than 6000 rpm.
Checks Checks
(1) Disconnect battery plug, then perform inverter discharging work (1) Disconnect battery plug, then perform inverter discharging work
(4) Connect cables properly (4) Connect cables properly
(8) Fasten connector securely (8) Fasten connector securely
(6) Fasten connector securely (6) Fasten connector securely
(12) Repair or replace harness (12) Repair or replace harness
(2) Check to see if left traction motor cables (U, V and W (2) Check to see if left traction motor cables (U, V and W
phases) are connected to left traction inverter properly phases) are connected to left traction inverter properly
Normal Abnormal Normal Abnormal
(3) Ch (3) Ch eck to see if connector eck to see if connector E-06 E-06 of left of left traction inver traction inver ter is ter is
fastened securely fastened securely
Normal Abnormal Normal Abnormal
(5) C (5) C heck to see if conn heck to see if conn ector ector E- E- 18 18 of left of left traction motor traction motor
speed sensor is fastened securely speed sensor is fastened securely
Normal Abnormal Normal Abnormal
(7) D (7) D isconnect connec isconnect connec tors E-06 tors E-06 and E-18 and E-18
Check continuity between E-06-5 and E-18-1(15) Check continuity between E-06-5 and E-18-1(15)
Check continuity between E-06-6 and E-18-4(18) Check continuity between E-06-6 and E-18-4(18)
Check continuity between E-06-7 and E-18-2(17) Check continuity between E-06-7 and E-18-2(17)
Check continuity between E-06-19 and E-18-3(16) Check continuity between E-06-19 and E-18-3(16)
Continuity Continuity No No continuity continuity
(9) Dis (9) Dis conne conne ct connec ct connec tor tor E-0 E-0 1 1 of logic unit of logic unit
Check continuity between E-01-3 and E-06-17(10) Check continuity between E-01-3 and E-06-17(10)
Check continuity between E-01-6 and E-06-20(12) Check continuity between E-01-6 and E-06-20(12)
Continuity Continuity No No continuity continuity
Continuity Continuity No No continuity continuity
(11) C (11) C onnec onnec t connector t connector E-01 E-01 to logic unit to logic unit , then turn on , then turn on
power again power again
(10) Dis (10) Dis conne conne ct connec ct connec tor E-02 tor E-02 of logic unit of logic unit
Check continuity between E-02-5 and E-06-3(3) Check continuity between E-02-5 and E-06-3(3)
Check continuity between E-02-6 and E-06-4(4) Check continuity between E-02-6 and E-06-4(4)
CA CA N N
Power supply Power supply
Sensor Sensor