TM 5-3805-258-24-1
9 5 0 B O P E R A T O R ’ S S T A T I O N
E L E C T R I C A L
T R O U B L E S H O O T I N G
Check for continuity through the switch with an 8S4627 Circuit Tester.
Continuity
No Continuity
Go to Step 2.
Replace the switch.
2. Check for continuity from the switch to machine ground.
Continuity
No Continuity
Go to Step 3.
I
Repair or replace the harness or connect a ground
wire from the switch to machine ground.
3. Connect the control wire to the switch again. Disconnect the harness plug
from the operator panel. Check for continuity between the sockets that follow:
HYDRAULIC OIL
ENGINE COOLANT
TRANSMISSION OIL
TEMPERATURE
TEMPERATURE
TEMPERATURE
Continuity
No Continuity
Replace the operator panel.
Use the electrical schematic or the simplified sche-
matics to find the harness with an open (broken)
wire. Repair or replace the harness.
PROBLEM B: Alternator Indicator ON
1. If alternator indicator
Indicator Turns OFF
TROUBLESHOOTING
is ON, increase engine speed.
Indicator Does NOT Turn OFF
Tighten alternator belt and check indicator again.
Go to Step 2.
2. Make a check of the alternator output at the “R” terminal. For the alternator
indicator to be OFF, the operator panel must have 10 volts or more to Socket 3.
Voltage Output Is Correct
Voltage Output Is Not Correct
Replace the operator panel.
Repair or replace the alternator.
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