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240
TM 9-2320-312-24-2
Troubleshooting Section
Test Step 3. Perform a Pull Test on Each
Results:
Wire Terminal Connection
OK Proceed to Test Step 5.
A. Each terminal and each connector should easily
Not OK
withstand 45 N (10 lb) of pull and each wire
should remain in the connector body. This test
Repair: Repair the circuit.
checks whether the wire was properly crimped
in the terminal and whether the terminal was
Verify that the repair eliminates the problem.
properly inserted into the connector.
STOP.
B. The DT connectors use a green wedge to lock
the terminals in place. Ensure that the green
Test Step 5. Check Wires for Nicks or
wedge is not missing and that the green wedge
Abrasion in the Insulation
is installed properly on the DT connectors.
A. Carefully inspect each wire for signs of abrasion,
Note: Terminals should always be crimped onto the
nicks, or cuts.
wires by using a crimp tool. Do not solder terminals.
Use the 1U-5804 Crimp Tool.
The following areas are locations that should
be checked:
Expected Result:
Exposed insulation
Each terminal and each connector easily withstands
45 N (10 lb) of pull and each wire remains in the
Points of rubbing wire against the engine
connector body.
Points of rubbing wire against a sharp point
Results:
B. Check all of the hold down clamps for the
OK Proceed to Test Step 4.
harness in order to verify that the harness is
properly clamped. Also check all of the hold
Not OK
down clamps for the harness in order to verify
that the harness is not compressed by the
Repair: Repair the circuit.
clamp. Pull back the harness sleeves in order
to check for a flattened portion of wire. The
Verify that the repair eliminates the problem.
flattened portion of wire is caused by the clamp
that holds the harness.
STOP.
Test Step 4. Perform the "Wiggle Test"
Expected Result:
on Cat ET
The wires are free of abrasion, nicks, or cuts and
the harness is properly clamped.
A. Select the "Wiggle Test" from the diagnostic tests
on Cat ET.
Results:
B. Press the "OK" button after you adhere to the
OK Proceed to Test Step 6.
warning.
Not OK
C. Choose the appropriate group of parameters to
monitor.
Repair: Repair the wires or replace the wires, as
required.
D. Press the "Start" button. Wiggle the wiring
harness in order to reproduce intermittent
Verify that the repair eliminates the problem.
problems.
STOP.
E. If an intermittent problem exists, the status will be
highlighted and an audible beep will be heard.
Expected Result:
No intermittent problems were indicated during the
"Wiggle Test".

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