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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
(12) Disconnect connectors E-07 and CN1
(12) Disconnect connectors E-07 and CN1
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)
(13)
(13) C
Connec
power
power
Raise wheels off floor
Raise wheels off floor
(13) C
(13)
Connec
power
power
Raise wheels off floor
Raise wheels off floor
(15) Driving and check the jerky and change directions at
(15) Driving and check the jerky and change directions at
very low speed
very low speed
(16) Driving and reading
(16) Driving and reading
output monitor
output monitor
Check the value of speed is smooth and not erratic
Check the value of speed is smooth and not erratic
feedback
feedback
(17) Follow the traction inverter testing procedure
(17) Follow the traction inverter testing procedure
(19) Remove DSP cover of traction inverter and check DSP
(19) Remove DSP cover of traction inverter and check DSP
flat cable for looseness or wire breakage
flat cable for looseness or wire breakage
(21) Replace DSP card of traction inverter
(21) Replace DSP card of traction inverter
All
All powe
(23) Perform inverter discharging work
(23) Perform inverter discharging work
(24) Replace the DSP card with t
(24) Replace the DSP card with t
then replace the traction inverter
then replace the traction inverter
Please keep the DSP card which is used for inspection
Please keep the DSP card which is used for inspection
at step (21) because the card is normal
at step (21) because the card is normal
(25) Perform inverter discharging work
(25) Perform inverter discharging work
(26) Replace the traction inverter ASSY with the original
(26) Replace the traction inverter ASSY with the original
inverter AS
inverter
Please keep the inverter ASSY which is used for
Please keep the inverter ASSY which is used for
inspection at step (24) because the ASSY is normal
inspection at step (24) because the ASSY is normal
Continuity
Continuity
No
No
onnect
t
all conne
all
connectors
ctors,
,
battery plug an
battery plug
onnect
t
all
all conne
connectors
ctors,
,
battery plug
battery plug a
Normal
Normal
Without service tool
Without service tool
Motor speed feedback
Motor speed feedback
Smooth
Smooth
Rough
Rough
Normal
Normal
Normal
Normal
power cables
r cables
connect and turning on powe
conne
ct and turning on
If fault (15) remains
If fault (15) remains
he original
he original
If fault (15) remains
If fault (15) remains
ASSY
SY
again
again
, then replace
, then replace
continuity
continuity
and turning on
d turning on
(14) Repair or replace harness
(14) Repair or replace harness
and turning on
nd turning on
Abnormal
Abnormal
With service tool
With service tool
of
of
or
or
erratic
erratic
(18) Replace traction motor
(18) Replace traction motor
Abnormal
Abnormal
(20) Replace traction inverter
(20) Replace traction inverter
Abnormal
Abnormal
(22) Secure DSP flat cable if loose
(22) Secure DSP flat cable if loose
power
r
card again
card again
,
,
the traction mot
the traction mot
or
or
Replace traction inverter if wire breaks
Replace traction inverter if wire breaks
502818
502818
2-27
2-27
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