Table 214
Troubleshooting Test Steps
Values Results
1. Perform the Wiggle Test
Carefully following this procedure is the best way to identify
the root cause of an intermittent problem.
A. Turn the keyswitch to the ON position.
B. Use the electronic service tool to run the “Wiggle Test” .
C. Slowly wiggle the wiring and the connectors between the
P2 connector and the sensor. Slowly wiggle the wiring and the
connectors between the P1 connector and the sensor. Pay
particular attention to the wiring near each connector. Be sure
to wiggle all of the wiring.
D. As you wiggle the wiring look for these problems.
1. Loose connectors or damaged connectors
2. Moisture on the connectors or the wiring
3. Damage that is caused by excessive heat
4. Damage that is caused by chafing
5. Improper routing of wiring
6. Damaged insulation
Wiggle test
Result: The wiring failed the Wiggle Test.
Repair: There is a problem with the wiring. Repair the wiring
or replace the wiring.
Verify that the problem is resolved.
Proceed to Test Step 2
Result: The wiring passed the Wiggle Test.
Repair: The problem may be intermittent. Inspect the wiring.
Refer to Troubleshooting, “Electrical Connectors - Inspect”.
If the wiring looks OK perform the following procedure.
1. Turn the keyswitch to the OFF position.
2. Disconnect the connectors. Carefully inspect the terminals
for proper installation. Make sure that each terminal is clean
and dry.
3. Insert a pin into each socket. Verify that each socket grips
the pin firmly. Repair any problems.
4. Connect all connectors.
5. Verify that the problem is resolved.
6. Return the unit to service.
Proceed to Test Step 2
2. Check for Diagnostic Trouble Codes
A. Connect to the electronic service tool.
B. Turn the keyswitch to the ON position.
C. Access the “Active Diagnostic Code” screen on the elec-
tronic service tool.
Wait at least 30 seconds in order for the diagnostic codes
to become active.
D. Look for one of the diagnostic codes that are listed in Table
213 .
Codes Result: A -3 diagnostic code is active.
Proceed to Test Step 3.
Result: A -4 or 4360-20 diagnostic code is active.
Proceed to Test Step 4.
Result: For a diagnostic code that is logged but not cur-
rently active, Proceed to Test Step 4.
(continued)
UENR4469-36 397
Circuit Tests
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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