CAN-bus failure CCU
CAN-bus failure CCU
START
START
Open the
Open the
cover
cover
Disconnect
Disconnect
power from the
power from the
WECS
WECS
CCU software
CCU software
is probably
is probably
ove
ove
rl
rl
oade
oade
d
d
or
or
24V is missing
24V is missing
(if also green
(if also green
LED is blinking)
LED is blinking)
Check flat cable,
Check flat cable,
CCU. Change the
CCU. Change the
broken one
broken one
Connect CAN
Connect CAN
terminal resistor.
terminal resistor.
If they exist, disconnect
If they exist, disconnect
pins 33-34 and 37-38
pins 33-34 and 37-38
Change
Change
the CCU
the CCU
Find the broken
Find the broken
cable/unit in the
cable/unit in the
CAN network
CAN network
Connect pins
Connect pins
33-34 and
33-34 and
37-38
37-38
CAN network
CAN network
probably OK
probably OK
Is
Is
res
res
i
i
s
s
t
t
ance 33-34
ance 33-34
and 37-38
and 37-38
≈
≈
120 ohm?
120 ohm?
Is
Is
resistance 33-34 =
resistance 33-34 =
60 ohm?
60 ohm?
Is
Is
resistance 33-37 and
resistance 33-37 and
33-38 < 1ohm?
33-38 < 1ohm?
Is
Is
yellow LED
yellow LED
blinking?
blinking?
No
No
Y
Y
e
e
s
s
No
No
Y
Y
e
e
s
s
Y
Y
e
e
s
s
No
No
No
No
Y
Y
e
e
s
s
Fig 08-11
Fig 08-11
3208110342
3208110342
3
3
4
4
S
S
G
G
-
-
2
2
0
0
0
0
4
4
1
1
4
4
-
-
0
0
4
4
O
O
p
p
e
e
r
r
a
a
t
t
i
i
n
n
g
g
T
T
r
r
o
o
u
u
b
b
l
l
e
e
s
s
Содержание 41508
Страница 3: ......
Страница 12: ...Appendix B Welding Precautions 200147...
Страница 22: ...Fuel Lubricating Oil Cooling Water 34SG 200303 03...
Страница 29: ...A Ap pp pe en nd di ix x A A E En nv vi ir ro on nm me en nt ta al l H Ha az za ar rd ds s 2 20 00 03 32 21 1...
Страница 73: ...Maintenance Tools 32 9801...
Страница 115: ...Engine Block with Bearings Cylinder and Oil Sump 34SG 9701...