Table 247
Troubleshooting Test Steps
Values Results
4. Perform a Pull Test on Each Wire Terminal Connection
A. Ensure that the locking wedge for the connector is installed cor-
rectly. Terminals cannot be retained inside the connector if the
locking wedge is not installed correctly.
B. Perform the 45 N (10 lb) pull test on each wire. Each terminal
and each connector should easily withstand 45 N (10 lb) of ten-
sion and each wire should remain in the connector body. This test
checks whether the wire was correctly crimped in the terminal and
whether the terminal was correctly inserted into the connector.
Pull test OK Result: A wire has been pulled from a terminal or a terminal
has been pulled from the connector in the 45 N (10 lb) pull
test.
Repair: Use the 2900A033 Crimp Tool to replace the termi-
nal. Replace damaged connectors, as required.
Use the electronic service tool to clear all logged diagnostic
codes and then verify that the repair eliminates the fault.
Result: All terminals pass the pull test.
Proceed to Test Step 5.
5. Check the Locking Mechanism of the Connectors
A. Ensure that the connectors lock correctly. After locking the con-
nectors, ensure that the two halves cannot be pulled apart.
B. Verify that the latch tab of the connector is correctly latched. Al-
so verify that the latch tab of the connector returns to the locked
position.
The connec-
tors are
locked and
are not
damaged
Result: The locking mechanism for the connector is dam-
aged or missing.
Repair: Repair the connector or replace the connector, as
required.
Use the electronic service tool to clear all logged diagnostic
codes and then verify that the repair eliminates the fault.
Result: The connectors are in good condition.
Proceed to Test Step 6.
6. Check the Screws on the ECM Connectors
A. Visually inspect the screws for the ECM connectors. Ensure
that the threads on each screw are not damaged.
B. Connect the ECM connectors.
C. Use a 7 mm screw to retain each of the ECM connectors.
D. Tighten the two screws for the ECM connector to the correct
torque of 6.0 N·m (53 lb in).
The ECM
connectors
are secure.
Result: The screws for the ECM connectors are damaged
or a threaded hole in the ECM is damaged.
Repair: Repair the connectors or replace the connectors or
screws, as required. If a threaded hole in the ECM is dam-
aged, replace the ECM.
Use the electronic service tool to clear all logged diagnostic
codes and then verify that the repair eliminates the fault.
Result: The ECM connectors are secured.
Proceed to Test Step 7.
7. Perform the ““Wiggle Test”” on the Electronic Service Tool
A. Select the “Wiggle Test” from the diagnostic tests on the elec-
tronic service tool.
B. Choose the appropriate group of parameters to monitor.
C. Press the “Start” button. Wiggle the wiring harness to repro-
duce intermittent faults.
If an intermittent fault exists, the status will be highlighted and an
audible beep will be heard.
Intermittent
faults were
indicated.
Result: No intermittent faults were found.
If directed here from another procedure, return to the proce-
dure and continue testing. If this test confirms that the fault
has been eliminated, return the engine to service.
Result: At least one intermittent fault was indicated.
Repair: Repair the harness or the connector.
Use the electronic service tool to clear all logged diagnostic
codes and then verify that the repair eliminates the fault.
516 UENR4469-36
Service
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