Troubleshooting

RENR2696-01 143
Troubleshooting Section
Repair: T ighten the Allen head screw to the proper
torque.
Verify that the fault has been eliminated.
If the fault has not been eliminated proceed to test
step 3.
Test Step 3. Perform a Pull Test on each
Wire Terminal Connection.
A. Each termina
l and each connector should
withstanda45N(10lb)pulltest.Eachwireshould
remain in the connector body. This test checks
whether the w
ire was properly crimped in the
terminal and whether the terminal was properly
inserted into the connector.
B. The DT connectors use an orange wedge to lock
the terminals in place.
C. Check in order to ensure that the orange wedge is
not missing and that the orange wedge is installed
properly on
the DT connectors.
Note: Terminals should always be crimped onto
the wires by
use of a crimp tool. Do not solder the
terminals.
Expected R
esult:
Check that each terminal and each connector
withstand
s 45 N (10 lb) of pull. Each wire remains in
the connector body.
Results:
•
OK – Proceed to Test Step 4.
•
Not OK – Repair the wiring or replace the
connector or the terminal.
Repair: Verify that the repair has eliminated the
fault.
If the fault has not been eliminated proceed to test
step 4.
Test Step 4. Monitor the Electronic
ServiceToolwhiletheWiringandthe
Connectors are being pulled.
A. Turn the
keyswitch to the ON position.
B. If there is an inactive diagnostic code that pertains
to the ci
rcuit, perform the following test:
Monitor the “Inactive Diagnostic Code” screen of
the electronic
service tool while the diagnostic
code remains active. Pull each of the harnesses
and the connectors that connect to the
component. If
the harness is being pulled and
the inactive diagnostic code disappears refer
to Tr oubleshooting, “Troubleshooting with a
Diagnostic C
ode” for the correct procedure.
C. If there is an active diagnostic code on the circuit
for a particu
lar component, perform the following
test:
Monitor the “
Active Diagnostic Code” screen of the
electronic service tool for the component while the
harnesses are being pulled. Verify that the code
has been eli
minated. If the code remains active
there is a problem in the wiring or the connector.
D. If there are
no active diagnostic codes or inactive
diagnostic codes, perform the following test:
Monitor th
e “Status Display” screen on the
electronic service tool for a particular parameter
while the wiring harness is being pulled.
If the harness is being pulled and the reading
changes erratically, there is a problem in the
cables or t
he connector.
Expected Result:
If the problem appears to be external to the
harnesses and connectors, then pulling on the
harness an
d the connectors will have no effect on
either the component status of the active diagnostic
code or on the engine performance.
Results:
•
OK – Proce
ed to Test Step 5.
•
Not OK – Repair the harness and/or the
connecto
rs or replace the harness and/or
connectors that are causing the problem. If the fault
has not been eliminated proceed to test step 5.
Test Step 5. Check Wires for Nicks and/or
Abrasions in the Insulation.
A. Careful
ly inspect each wire for signs of abrasion,
nicks, or cuts.
The foll
owing areas are locations that should be
checked:
•
Exposed
insulation
•
Points of rubbing wire against the engine
•
Points of rubbing wire against a sharp point