Perkins 1104E Series Troubleshooting Manual page 174

174
Troubleshooting Section
E. Check the harness and wiring for abrasions and
for pinch points from the sensor to the ECM.
Expected Result:
All connectors, pins, and sockets should be
completely coupled and/or inserted. The harness
and wiring should be free of corrosion, abrasion, and
pinch points.
Results:
•
OK – Proceed to Test Step 3.
•
Not OK – Repair the connectors or wiring and/or
replace the connectors or wiring. Ensure that all
of the seals are properly in place and ensure that
the connectors are completely coupled. Clear all
inactive diagnostic codes. Verify that the repair has
eliminated the problem. Proceed to test step 3 if
the fault has not been eliminated.
Test Step 3. Verify That The Diagnostic
Code Is Still Active.
A. Turn the keyswitch to the ON position.
Note: Wait at least 15 seconds for activation of the
diagnostic codes.
B. Access the "Active Diagnostic Code" screen on
the electronic service tool and check for active
diagnostic codes.
C. Determine if the problem is related to an open
circuit diagnostic code or a short circuit diagnostic
code.
Expected Result:
A short circuit diagnostic code or an open circuit
diagnostic code is active.
Results:
• SHORT Circuit – A short circuit diagnostic code is
active at this time. Proceed to Test Step 4.
•
OPEN Circuit – An open circuit diagnostic code is
active at this time. Proceed to Test Step 5.
RENR2696-01