Ecm General Service Information; Connector Inspection Procedure - Komatsu TB45 Service Manual

ECM GENERAL SERVICE INFORMATION

ECM GENERAL SERVICE INFORMATION
Connector Terminal Inspection

CONNECTOR INSPECTION PROCEDURE

In circuit inspection, inappropriate connector probing will cause
connector damages and/or poor connection. The probes provided
with the circuit tester may be too large to probe connector terminals
without damaging them. Always use alligator clips and "T" pins
according to following the procedure.
INSPECTION FROM HARNESS SIDE
For a standard connector without any waterproofing, use "T" pins
from the harness side.
CAUTION:
• For a connector with a rear cover, such as ECM
connectors, remove the rear cover before the inspection.
• For a waterproof connector, do not probe the terminals
from the harness side. Doing so may damage the seal.
EGM0054
INSPECTION FROM TERMINAL SIDE
1. Female terminal
• Female connector terminals have a small notch difference
inside. Insert a "T" pin along the step to inspect.
CAUTION:
Do not insert any objects to a female connector terminal other
than the corresponding male connector terminal.
EGM0055
• In case of a female connector terminal without any notches,
remove the retainer before probing.
EGM0056
EG-11