Case CX130 - Page 126

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DIAGNOSTIC - SELECTION
CASE TRAINING CENTER
AUGUST 2000
Troubleshooting Cause Action
Starting motor switch ON
The fuel inlet cut-off
lever is in the stop
position
NO
Problem
with engine
system
Check the
engine
system
YES
Disconnect the connector
from the engine
emergency stop motor
CND6. Connect the
appropriate service
connector (6P) to
connector CND6 at the
engine harness end,
measure the voltage
between the earth (-) and
the (+) wire LR. The
voltage should be
between 20 V and 30 V
NO
Open circuit
on wire LR
between the
stop motor
connector
and CN or
on wire LR
between the
fuse and CN
Repair the
wire LR
YES
Using the same
configuration check for
continuity between
wires L and LW:
Starting motor switch
ON: continuity
Starting motor switch
OFF: no continuity
YES
Stop motor
defective
Change the
stop motor
NO
Measure the voltage at
the emergency stop
relay terminals,
between wire L (+) and
earth (-)
Emergency stop switch
ON = 0 V
Emergency stop switch
OFF = 20 V to 30 V
NO
Emergency
stop relay
defective
Change the
emergency
stop relay
You can also check the
emergency stop relay
by replacing it
temporarily by one of
the relays from the
other functions
YES
Open circuit
between the
emergency
stop relay
and wire L
Change the
emergency
stop relay or
repair wire L