Perkins 1104E Series Troubleshooting Manual page 191

RENR2696-01
Illustration 103
Breakout T
A. Turn the keyswitch to the OFF position.
B. Disconnect P1 ECM connector.
C. Connect a Breakout T between P1 ECM connector
and J1.
D. Measure the voltage between Test Point C relay
coil and terminal 42 on the Breakout T. Refer to
illustrations 102 and 103.
E. Check that the voltage is present with the
keyswitch in the ON position.
F. Check that there is no voltage with the keyswitch
in the OFF position.
Expected Result:
The measured voltage is between 11.0 VDC and 13.5
VDC for a 12 volt system and between 22.0 VDC and
27.0 VDC for a 24 volt system with no suspected
intermittent problems at this time.
Results:
• OK – There is a problem in the wiring between
P1 and P20.
Repair: Repair the wiring or replace the wiring.
Verify that the repair has eliminated the problem.
STOP.
•
Not OK – There is a problem with the ECM
supply/ignition switch input.
Repair: Refer to Troubleshooting, "Electrical
Power Supply Circuit - Test".
STOP.
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Troubleshooting Section
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