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