Perkins 1106D Troubleshooting Manual page 117

SENR9982
B. Turn the keyswitch to the ON position.
C. Use the Perkins EST in order to monitor the
diagnostic codes. Check and record any active
diagnostic codes.
Note: Wait at least 15 seconds in order for the
diagnostic codes to become active.
Expected Result:
One of the following diagnostic codes is active:
•
262-03 5 Volt Sensor DC Power Supply short to
+batt
•
262-04 5 Volt Sensor DC Power Supply short to
ground
Results:
•
OK – A 262-04 diagnostic code is active. Proceed
to Test Step 3.
•
OK – A 262-03 diagnostic code is active. Proceed
to Test Step 7.
•
Not OK – 262-04 and 262-03 diagnostic codes are
not active. Proceed to Test Step 4.
Test Step 3. Disconnect the Sensors
A. Turn the keyswitch to the ON position.
B. Use the Perkins EST in order to monitor the
diagnostic codes.
C. Disconnect the pressure sensors one at a time. if
the analog throttle demand sensors are installed,
then disconnect the throttle sensors one at a time.
Wait for 30 seconds after each of the sensors is
disconnected.
Note: The 5 volt diagnostic code will become inactive
when the sensor that caused the 5 volt diagnostic
code is disconnected.
D. Ensure that all the pressure sensors and the
throttle demand sensors (if equipped) are
disconnected.
Expected Result:
The 5 volt diagnostic code is not active when all of
the sensors are disconnected.
Results:
•
OK – The 5 volt diagnostic code is not active when
all of the sensors are disconnected.
Repair: Reconnect all of the sensors except the
suspect sensor.
Proceed to Test Step 4.
•
Not OK – The 5 volt diagnostic code is still active.
Repair: Leave all of the sensors disconnected.
Proceed to Test Step 5.
Test Step 4. Install a New Sensor
A. Remove the suspect sensor and connect a
replacement sensor. Do not install the replacement
sensor to the engine.
B. Use the Perkins EST in order to monitor the
diagnostic codes.
Expected Result:
The 5 volt diagnostic code is not active.
Results:
•
OK – The 5 volt diagnostic code is not active.
Repair: Use the Perkins EST in order to clear all
logged diagnostic codes. Replace all wires to the
original configuration.
Verify that the repair eliminates the fault.
STOP.
•
Not OK – The 5 volt diagnostic code is still active.
Repair: Do not use the new sensor. Repair
the connectors or the wiring and/or replace the
connectors or the wiring. Refer to Troubleshooting,
"Electrical Connectors - Inspect".
Verify that the repair eliminates the fault.
STOP.
Test Step 5. Disconnect the ECM
Connector and Check for Active
Diagnostic Codes
A. Turn the keyswitch to the OFF position.
B. Connect the Perkins EST to the diagnostic
connector.
C. Check the ECM connectors for corrosion and
moisture.
D. Disconnect the P2 ECM connector from the ECM.
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Troubleshooting Section