ELECTRICAL GENERAL MAINTENANCE INSTRUCTIONS - CONTINUED
ELECTRICAL CONNECTORS INSPECTION (ENGINE) - CONTINUED
Disconnect suspect connector and inspect connector seal. Ensure seals are in good condition. If necessary, replace
Thoroughly inspect connectors for evidence of moisture entry.
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It is normal to see some minor seal abrasion on connector seals. Minor seal abrasion will not allow the entry
If moisture or corrosion is evident in connector, source of moisture entry must be found and source of
moisture entry must be repaired. If source of moisture entry is not repaired, problem will recur. Simply
drying connector will not fix the problem. Check these items for possible moisture entry path:
(a) Missing seals
(b) Improperly installed seals
(c) Nicks in exposed insulation
(d) Improperly mated connectors
Moisture can also travel to a connector through inside of a wire. If moisture is found in connector, thor-
oughly check connector's harness for damage. Also check other connectors that share harness for mois-
N OT E
The Electronic Control Module (ECM) is a sealed unit. If moisture is found in ECM connector, ECM is not
the source of moisture. Do not replace ECM.
Expected Result. The harness wiring, connectors, and seals are in good condition. There is no evidence of mois-
ture in the connectors.
If the harness wiring, connectors, and seals are in good condition, go to step 2.
If a problem has been found with harness or connectors, repair connectors or wiring, as required. Ensure
all seals are properly in place. Ensure connectors have been reattached. If corrosion is evident on pins,
sockets, or connector, use only denatured alcohol to remove corrosion. Use a cotton swab or a soft brush to
remove corrosion. If moisture was found in connectors, run engine for several minutes and check again for
moisture. If moisture reappears, moisture is wicking into connector. Even if moisture entry path is
repaired, it may be necessary to replace wires. Verify repair eliminates problem.