Perkins 1104E Series Troubleshooting Manual page 201

RENR2696-01
Expected Result:
The switch status should change as you cycle the
mode switches. When the switch is in the OFF
position the switch has an open condition. When the
switch is in the ON position the switch has a closed
condition.
Results:
•
OK
Repair: Verify that the status of the switch changes
as the switch is cycled.
STOP.
•
Not OK – There is a problem with the circuit for the
mode selector switch. Proceed to Test Step 3.
Test Step 3. Insert a Jumper at the
Suspect Mode Switch
Illustration 113
A. Turn the keyswitch to the OFF position. Disconnect
the suspect mode switch.
B. Perform the following procedure to test the circuit
of Mode Selector Switch No. 1. Insert the jumper
wire between P20:30 Switch Input 9 and P20:37
Switch Return.
C. Perform the following procedure to test the circuit
of Mode Selector Switch No. 2. Insert a jumper
wire between P20:21 Switch Input 10 and P20:37
Switch Return.
D. Perform the following procedure to test the circuit
of Mode Selector Switch No. 3. Insert a jumper
wire between P20:9 Switch Input 11 and P20:37
Switch Return.
201
Troubleshooting Section
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