Case CX130 - Page 121

DIAGNOSTIC - SELECTION
4 - 33
CASE TRAINING CENTER
AUGUST 2000
Troubleshooting Cause Action
Hourmeter does not work
NO
Disconnect CN13 to
measure the voltage
between the female
terminal on wire BrW545
and earth. Over 10V.
YES
Bad connection
on CN13 or
defective
hourmeter
Clean the
connecting
terminal CN13 or
change the
hourmeter
NO
Disconnect CN26 to
measure the voltage
between the female
terminal on wire BrR544
and earth. Over 10V
YES
Bad connection
on CN26 or short-
circuit on wire
BrW545 between
CN26 and CN13
Clean terminal on
CN26 or repair
wire BrW545
NO
Disconnect CN22 to
measure the voltage
between the female
terminal on wire BrR543
and earth. Over 10 V
YES
Bad connection
on CN22 or short-
circuit on wire
BrR543 or BrR544
between CN26
and CN22
Clean the
terminal on CN22
or repair wire
BrR543 or
BrR544
NO
Short-circuit on
wire BrR543
between CN22
and the alternator
or defective
alternator
Repair wire
BrR543 or
change the
alternator
Disconnect CN1 to
measure the voltage
between wire BrR543 at
the main electronic control
box end and earth. Over
10 V
YES
Bad connection
on CN1 or main
electronic control
box defective
Clean the
connecting
terminal on CN1
or change the
main electronic
control box
NO
Short-circuit on
wire Br543
between CN1 and
CN26
Repair wire
BRR543
Disconnect the connector from terminal R on the alternator to
measure the voltage between wire LgR at the alternator end
and earth. Over 10 V
YES
Alternator
defective
Change the
alternator
NO
Disconnect CN22 to
measure the voltage
between the male terminal
on wire LgR and earth. Over
10 V
YES
Bad connection at
terminal R on the
alternator or short-
circuit on wire LgR
between CN22
and the alternator
Clean the
terminal on CN22
or repair wire LgR
between CN22
and the alternator
NO
Short-circuit on
wire LgR540
between the
starting motor
switch and CN22
or starting motor
switch defective
Repair wire
LgR540 or chang
the starting motor
switch
YES