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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.24 4 Tra
3.2
Tracti
Error code: 52
Error code: 52
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 right traction motor cables (U,
(2) Check to see if right traction motor cables
phases) are connected to right traction inverter properly
phases) are connected to right traction inverter properly
(3)
(3) Ch
Check to see if connector
eck to see if connector
inverter is fastened securely
inverter is fastened securely
(5)
(5) Ch
Check to see if connector
eck to see if connector
motor speed sensor is fastened securely
motor speed sensor is fastened securely
Sensor
Sensor
(7) D
(7)
Disconnect connectors E-
isconnect connectors
Check continuity between E-07-5 and E-17-1(6)
Check continuity between E-07-5 and E-17-1(6)
Check continuity between E-07-6 and E-17-2(7)
Check continuity between E-07-6 and E-17-2(7)
Check continuity between E-07-7 and E-17-4(8)
Check continuity between E-07-7 and E-17-4(8)
Check continuity between E-07-19 and E-17-3(5)
Check continuity between E-07-19 and E-17-3(5)
Power supply
Power supply
(9)
(9) Dis
Disconne
connect connector E-01
Check continuity between E-01-3 and E-07-17(10)
Check continuity between E-01-3 and E-07-17(10)
Check continuity between E-01-6 and E-07-20(12)
Check continuity between E-01-6 and E-07-20(12)
(10) Dis
(10)
Disconn
connect connec
Check continuity between E-02-5 and E-07-3(3)
Check continuity between E-02-5 and E-07-3(3)
Check continuity between E-02-6 and E-07-4(4)
Check continuity between E-02-6 and E-07-4(4)
(11)
(11) C
Connec
onnect connector E
power again
power again
ction M
on Moto
otor R.H
r R.H., Pu
., Pulse I
lse Inpu
Display: "52". Traction motor operation inhibited. Pump motor and power steering operations inhibited if this
Display: "52". 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 right side
Faulty contact of right side traction inverter connector, faulty connection of right side traction motor connector
and cable, faulty 12V
and cable, faulty 12V input voltage of right side traction inverter, faulty contact or
input voltage of right side traction inverter, faulty contact or wire breakage of right side
traction motor speed sensor harness, faulty DSP card of
traction motor speed sensor harness, faulty DSP card of right side traction inverter, faulty right side traction
motor speed sensor.
motor speed sensor.
Motor rotation speed is more than 6000 rpm.
Motor rotation speed is more than 6000 rpm.
Normal
Normal
Abnormal
Abnormal
E-0
E-07
7
of right t
of right t
Normal
Normal
Abnormal
Abnormal
E-1
E-17
7
of right t
of right t
Normal
Normal
Abnormal
Abnormal
E-07
07
and
and
E-17
E-17
Continuity
Continuity
No
No
ct connector E-01
of logic unit
of logic unit
Continuity
Continuity
No
No
CAN
CA
N
ect
connector E-02
tor E-02
of logic unit
of logic unit
Continuity
Continuity
No
No
t connector
E-01
-01
to logic unit, then t
to logic unit, then t
nput Fau
t Fault (5
lt (52) 2)
contactor CLOSE or OPEN.
traction inverter connector, faulty connection of right side traction motor connector
right side traction inverter, faulty right side traction
(U,V and W
V and W
(4) Connect cables properly
(4) Connect cables properly
raction
rac
tion
(6) Fasten connector securely
(6) Fasten connector securely
raction
rac
tion
(8) Fasten connector securely
(8) Fasten connector securely
continuity
continuity
continuity
continuity
continuity
continuity
(12) Repair or replace harness
(12) Repair or replace harness
urn on
urn on
occurs after pump contactor CLOSE. Line
wire breakage of right side
501144
501144
2-59
2-59
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