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CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
CHAPTER 2 TROUBLESHOOTING FOR CONTROL CIRCUITS
3. 3.22
22 Ti Tire A
re Ang
Error code: 50
Error code: 50
Situation
Situation
Possible
Possible
cause
cause
Trigger of
Trigger of
the error
the error
code
code
Checks
Checks
(1) Disconnect battery plug
(1) Disconnect battery plug
(2) Disconnect connecter E-08 and H-01(3W), E-38(4W)
(2) Disconnect connecter E-08 and H-01(3W), E-38(4W)
Check continuity between E-08-26 and H-01(3W)
Check continuity between E-08-26 and H-01(3W)
E-38(4W)-3, E-08-26 and E-01(3W) E-38(4W)-4
E-38(4W)-3, E-08-26 and E-01(3W) E-38(4W)-4
(S
(Sens
ensor
(3) Check continuity between E-08-14 and
(3) Check continuity between E-08-14 and
H-01(3W) E-38(4W)-2
H-01(3W) E-38(4W)-2
Check continuity between E-08-6 and
Check continuity between E-08-6 and
H-01(3W) E-38(4W)
H-01
(4) Check continuity between E-08-23 and H-01(3W)
(4) Check continuity between E-08-23 and H-01(3W)
E-38(4W)-1, E-08-23 and H-01(3W) E-38(4W)-6(GND)
E-38(4W)-1, E-08-23 and H-01(3W) E-38(4W)-6(GND)
(5) Conne
(5)
Connect logic connector
Turn on power
Turn on power
Check voltage between H-01(3W) E-38(4W)-3(Power)
Check voltage between H-01(3W) E-38(4W)-3(Power)
and (
and
E-38(4W)-4(Power) and 6(GND)
E-38(4W)-4(Power) and 6(GND)
5
5
(7) Turn off
(7) Turn off
Check steering wheel angle sensor linkage
Check steering wheel angle sensor linkage
(9)
(9) R
Replace
eplace
(11) Reinstall steering wheel angle sensor just has been
(11) Reinstall steering wheel angle sensor just has been
3
3
6
6
H-01(3W)
H-01(3W)
ngle S
le Sen
enso
sor Fa
r Faul ult (5
t (50) 0)
Display: "50". All operations inhibited except mast lowering operation. Line and steering contactor OPEN.
Display: "50". All operations inhibited except mast lowering operat
travelling speed limited to 5 km/h.
travelling speed limited to 5 km/h.
Faulty steering sensor, faulty main harness, faulty PS
Faulty steering sensor, faulty main harness, faulty PS controller.
Voltage 4.8 or more, or 0.2 or less
Voltage 4.8 or more, or 0.2 or less
12°of phase difference between A and B
12°of phase difference between A and B
36°of fluctuation for 10 ms
36°of fluctuation for 10 ms
or
vol
voltage)
tage)
Continuity
Continuity
No
No
(3W)
E-38(4W)-5
-5
(Signal)
(S
ignal)
Continuity
Continuity
No
No
continuity
continuity
Continuity
Continuity
No
No
continuity
continuity
ct logic connector
and connec
and
connect
(GND)
GND)
and c
and
check
heck
voltage between
voltage between
V
V
±
±
10
10
%
%
Outside
Outside
the
the
specified
specified
power,
power
,
turn off
turn off
battery
battery
, and discharg
, and
discharge
Normal
Normal
Abnormal
Abnormal
steering w
steering
wheel angle
heel angle
sensor
sens
or
If fault remains
If fault remains
B
B
23
23
1
1
2
2
1
1
1
1
2
2
3
3
5
5
4
4
4
4
5
5
6
6
E-38(4W)
E-38(4W)
controller.
continuity
continuity
(6) Replace harness
(6) Replace harness
t
battery plug
battery
plug.
.
H
H
-01(3W)
-01(3W)
range
range
(8) Replace logic power board
(8) Replace logic power board
e
(10) Repair linkage
(10) Repair linkage
1
1
2
2
E-27
E-27
ion. Line and steering contactor OPEN. Or Or
501145
501145
2-55
2-55
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