Mode Selection Circuit - Test - Perkins 1104E Series Troubleshooting Manual

198
Troubleshooting Section
Results:
•
OK – The circuit for the diagnostic lamp is
functioning properly. Proceed to Test Step 5.
•
Not OK – The lamp did not turn on. The lamp
circuit is not functioning properly. There is a
problem in the wiring between the lamp and the
ECM.
Repair: Repair the lamp circuit.
Verify that the repair eliminated the problem.
STOP.
Test Step 5. Check the Voltage at the
ECM.
A. Disconnect ECM Connector J1/P1.
B. Insert a 70-Pin Breakout T between ECM
Connector J1 and ECM Connector P1.
C. Connect a voltage test lamp between J1:57 +
battery and J1:69 Neg. battery.
D. Connect a voltage test lamp to J1:57 + battery
and J1:23 engine shutdown lamp.
Expected Result:
The lamp should illuminate.
Results:
•
OK – The ECM is operating correctly. There is a
problem in the wiring or the lamp. Repair the wiring
or the lamp, as required. Verify that the repair
eliminates the problem. STOP.
•
Not OK – Temporarily connect a test ECM. The
test ECM must be programmed with the same
parameters as the suspect ECM. Check the
operation of the diagnostic lamp when the test
ECM is installed. If the problem is resolved with
the test ECM, then reconnect the suspect ECM. If
the problem returns with the suspect ECM, then
replace the suspect ECM. STOP.

Mode Selection Circuit - Test

System Operation Description:
Use this procedure under the following circumstances:
•
Check if the switch can be switched to ground.
•
Check if the mode selector switch operates
correctly.
Also, use this procedure if another procedure has
directed you here.
The mode selector switch provides the operator with
the ability to select a maximum of eight different
modes of operation. Different modes of operation
can be used in a particular situation by giving the
operator a means to select the most efficient method
of completing the required work. The following mode
selections are available:
•
Economy Mode
•
Machine Mode
•
Power Take-off Mode
Three digital switch inputs can be used in order to
select the most efficient mode. With three switches, a
maximum of eight modes can be applied by use of
a multiple position switch. With two switches, four
modes can be selected. With one switch, two modes
can be selected. Each mode has a single fuel limit
map, a rated speed, and a matched fuel delivery.
Each mode also has specific droop value for throttle
1 and throttle 2.
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