2-107
2-107
501154
501154
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3.4
3.47
7 Hyd
Hydrau
raulic
lic Loc
Lock So
k Solen
lenoid
oid Fau
Fault
lt (74
(74))
Error code: 74
Error code: 74
Situation
Situation
Display: "74".
Display: "74". Pump motor operatio
Pump motor operation inhibited. Normal traction motor operatio
n inhibited. Normal traction motor operation and power steering
n and power steering
operation.
operation.
Possible
Possible
cause
cause
Faulty lift lock valve, faulty main harness, faulty logic unit.
Faulty lift lock valve, faulty main harness, faulty logic unit.
Trigger of
Trigger of
the error
the error
code
code
By short circuit detection signal of
By short circuit detection signal of logic card.
logic card.
Checks
Checks
(1) Disconnect battery plug, then perform inverter discharging work
(1) Disconnect battery plug, then perform inverter discharging work
(2) D
(2) D
isconnect connec
isconnect connec
tor E-04 of logic
tor E-04 of logic
unit
unit
(3) Chec
(3) Chec
k short circu
k short circu
it
it
between
between
E-1
E-1
3-1
3-1
and E-13-2 of harness sid
and E-13-2 of harness sid
e
e
Shorted
Shorted
Not shorted
Not shorted
(5) C
(5) C
heck s
heck s
hort circ
hort circ
uit between
uit between
E-13-1 and E
E-13-1 and E
-13-
-13-
2
2
lift
lift
lock
lock
valve side connectors
valve side connectors
Measure coil resistance
Measure coil resistance
[7.9 Ω at -
[7.9 Ω at -
30 °C
30 °C
(-22 °F)
(-22 °F)
to
to
11.8
11.8
Ω at 80 °C (
Ω at 80 °C (
176 °F
176 °F
)]
)]
(MC)
(MC)
[22.1 Ω at -30 °C
[22.1 Ω at -30 °C
(-22 °F) to
(-22 °F) to
37.6 Ω at 80 °C (
37.6 Ω at 80 °C (
176 °F
176 °F
)]
)]
(FC)
(FC)
Normal
Abnormal
Normal
Abnormal
(4) Repair or replace main harness
(4) Repair or replace main harness
(6) Replace logic card of
(6) Replace logic card of
log
log
ic
ic
un
un
it
it
(7) R
(7) R
eplace lift lock
eplace lift lock
valve
valve
Disconnect connector E-13 of lift lock valve
Disconnect connector E-13 of lift lock valve
Содержание FB13PNT
Страница 2: ......
Страница 12: ......
Страница 86: ...1 73 1 73 Fig 5 Fig 5 500969 500969...
Страница 264: ...4 13 4 13...
Страница 265: ...CHAPTER 5 CIRCUIT DIAGRAM CHAPTER 5 CIRCUIT DIAGRAM Ch Chap apte ter 5 r 5 C CIR IRCU CUI IT DI T DIA AGR GRAM AM...
Страница 266: ...5 1 5 1...
Страница 267: ...5 2 5 2...
Страница 268: ...5 3 5 3...
Страница 269: ...5 4 5 4...
Страница 270: ...5 5 5 5...
Страница 271: ...5 6 5 6...
Страница 272: ...5 7 5 7...
Страница 273: ...5 8 5 8...
Страница 274: ...5 9 5 9...
Страница 275: ...5 10 5 10...
Страница 276: ...5 11 5 11...
Страница 277: ...5 12 5 12...
Страница 278: ...5 13 5 13...
Страница 279: ...5 14 5 14...
Страница 280: ...5 15 5 15...
Страница 281: ...5 16 5 16...
Страница 282: ...5 17 5 17...
Страница 283: ...5 18 5 18...
Страница 284: ...5 19 5 19...
Страница 285: ...5 20 5 20...
Страница 286: ...5 21 5 21...
Страница 287: ...5 22 5 22...
Страница 288: ...5 23 5 23...
Страница 289: ...5 24 5 24...
Страница 290: ...5 25 5 25...
Страница 292: ...9 9 9 9 7 7 5 5 9 9 5 5 M M 3 3 0 0 0 0 P P N N F F o o r r k k l l i i f f t t T T r r u u c c k k s s...