Service and Repair Manual
December 2019
Control System Fault Codes
86
S
®
-60 J
Part No. 1285305GT
ID Component ID Name Cause
Effect
Solution
69 AC
Generator
Output
11 Shorted
to
supply
voltage
TCON detected that
C45GEN circuit is
shorted to 12 V.
Generator function
will not operate.
* With a voltmeter, measure Y29.
Proper resistance should be between
5 - 60 ohms. Replace Y29 if resistance
is outside of those values.
* Verify wiring for C45GEN (GR/WH,
TCON J3-2) and check for open or
short circuits.
72 Lift Guard
Contact
Alarm
Switch
14 Cross
check
failed
PCON detected that
inputs from SW30
(contact alarm
proximity sensor)
are the same
voltage.
Boom Up and Extend
functions will not
operate.
* Using a voltmeter, verify that the
voltage on C248CA (OR/BK, PCON
J12-1) is always the opposite of
C247CA (OR, PCON J12-11).
* Check wiring for open or short
circuits.
* Verify SW30 is receiving power and
ground by verifying 12 V across
C31 pins 1 and 3.
* Replace SW30 if necessary.
21 Fault
73 Engine Oil
Pressure
12 Sensor
value
too
high
Engine oil pressure
sender is shorted to
12V.
Engine will not
operate.
* With a voltmeter, check that C25PSR
( WH/BK, TCON J6P9) is not shorted
to 12V and voltage is between
0.1-11.5V
* Replace sender if necessary
24 Too low The engine oil
pressure is
measured as too
low, potentially
damaging the
engine.
Engine may not
attempt to start until
system power cycle.
Engine may be turned
off by control system
immediately.
* Stop engine as soon as possible.
* Verify the engine oil level.
* Verify the engine oil pump.
* Power on the machine and start the
engine. At the ground controls display,
view the engine oil pressure gauge for
proper operation.
* If engine uses an analog oil pressure
sensor, verify it is sending an analog
voltage on C25PSR (WH/BK, TCON
J6-9).
Содержание S-60 J
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