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3-58
Fault code
(Hex)
Meaning of the fault code
possible reason for fault detection
Reaction of the TCU
Possible steps to repair
18
S.C. to battery voltage at customer specific
function No. 1 (ride control)
TCU detected a wrong voltage at the
output pin, that looks like a S.C. to battery
voltage
·
Cable is defective and is contacted to
battery voltage
·
Customer specific function No. 1 device
has an internal defect
·
Connector pin is contacted to battery
voltage
Customer specific
·
·
·
Check the cable from TCU to
customer specific function No. 1
device
C h e c k t h e c o n n e c t o r s f r o m
customer specific function No. 1 to
TCU
Check the resistance of customer
specific function No. 1 device
19
O.C. at customer specific function No. 1
(ride control)
TCU detected a wrong voltage at the
output pin, that looks like a O.C. for this
output pin
·
C a b l e i s d e f e c t i v e a n d h a s n o
connection to TCU
·
Customer specific function No. 1 device
has an internal defect
·
Connector has no connection to TCU
Customer specific
·
·
·
Check the cable from TCU to
customer specific function No. 1
device
C h e c k t h e c o n n e c t o r s f r o m
customer specific function No. 1
device to TCU
Check the resistance of customer
specific function No. 1 device
21
S.C. to battery voltage at clutch cut off
input
The measured voltage is too high:
·
Cable is defective and is contacted to
battery voltage
·
Clutch cut off sensor has an internal
defect
·
Connector pin is contacted to battery
voltage
Clutch cut off function is
disabled
OP mode : Normal
·
·
·
Check the cable from TCU to the
sensor
Check the connectors
Check the clutch cut off sensor
22
S.C. to ground or O.C. at clutch cut off
input
The measured voltage is too low:
·
Cable is defective and is contacted to
vehicle ground
·
Cable has no connection to TCU
·
Clutch cut off sensor has an internal
defect
·
Connector pin is contacted to vehicle
ground or is broken
Clutch cut off function is
disabled
OP mode : Normal
·
·
·
Check the cable from TCU to the
sensor
Check the connectors
Check the clutch cut off sensor
25
S. C. t o b a t t e r y vo l t a g e o r O. C. a t
transmission sump temperature sensor
input
The measured voltage is too high:
·
Cable is defective and is contacted to
battery voltage
·
Cable has no connection to TCU
·
Temperature sensor has an internal
defect
·
Connector pin is contacted to battery
voltage or is broken
No reaction, TCU use
default temperature
OP mode : Normal
·
·
·
Check the cable from TCU to the
sensor
Check the connectors
Check the temperature sensor
※
Some fault codes are not applied to this machine.
Summary of Contents for HL955
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