Perkins 1106D Troubleshooting Manual page 142

142
Troubleshooting Section
B. Ensure that the sealing plugs are in place. If any
of the plugs are missing, replace the plug. Ensure
that the plugs are inserted correctly into the
connector. Refer to Illustration 40.
Illustration 41
Seal for a three-pin connector (typical example)
Illustration 42
Seal for ECM connector (typical example)
C. Disconnect the suspect connector and inspect the
connector seal. Ensure that the seal is in good
condition. If necessary, replace the connector.
D. Thoroughly inspect the connectors for evidence
of moisture entry.
Note: It is normal to see some minor seal abrasion
on connector seals. Minor seal abrasion will not allow
the entry of moisture.
If moisture or corrosion is evident in the connector,
the source of the moisture entry must be found
and the source of the moisture entry must be
repaired. If the source of the moisture entry is not
repaired, the fault will recur. Simply drying the
connector will not fix the fault. Check the following
items for the possible moisture entry path:
•
Missing seals
•
Incorrectly installed seals
•
Nicks in exposed insulation
•
Improperly mated connectors
Moisture can also travel to a connector through
the inside of a wire. If moisture is found in
a connector, thoroughly check the connector
g01131019
harness for damage. Also check other connectors
that share the harness for moisture.
Note: The ECM is a sealed unit. If moisture is found
in an ECM connector, the ECM is not the source of
the moisture. Do not replace the ECM.
Expected Result:
The harness, connectors, and seals are in good
condition. There is no evidence of moisture in the
connectors.
Results:
•
OK – The harness, connectors, and seals are in
good condition. Proceed to Test Step 2.
•
Not OK – A fault has been found with the harness
or the connectors.
Repair: Repair the connectors or the wiring, as
required. Ensure that all of the seals are correctly
installed. Ensure that the connectors have been
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reattached.
If corrosion is evident on the pins, sockets or the
connector, use only denatured alcohol to remove
the corrosion. Use a cotton swab or a soft brush
to remove the corrosion.
If moisture was found in the connectors, run the
engine for several minutes and check again for
moisture. If moisture reappears, the moisture is
wicking into the connector. Even if the moisture
entry path is repaired, it may be necessary to
replace the wires.
Verify that the repair eliminates the fault.
STOP.
SENR9982